ADAPTIVE FILTERING FOR FMCW INTERFERENCE MITIGATION IN PMCW RADAR SYSTEMS

A radar sensing system for a vehicle includes a transmitter and a receiver. The transmitter is configured for installation and use on a vehicle. The transmitter is configured to transmit radio signals. The receiver is configured for installation and use on the vehicle. The receiver is configured to receive radio signals that include (i) the transmitted radio signals transmitted by the transmitter and reflected from objects in an environment, and (ii) other radio signals that include radio signals transmitted by at least one other radar sensing system. The receiver is configured to filter frequency modulated continuous wave (FMCW) radio signals from the received radio signals to produce filtered radio signals. The receiver is further configured to select between (i) the filtered radio signals, and (ii) the received radio signals before filtering. The filtered radio signals are selected when the other radio signals include FMCW radio signals.

SYSTEM AND METHOD FOR RADAR INTERFERENCE MITIGATION

A system for radar interference mitigation, preferably including one or more transmitter arrays, receiver arrays, and/or signal processors, and optionally including one or more velocity sensing modules. A method for radar interference mitigation, preferably including transmitting a set of probe signals, receiving a set of reflected probe signals, and/or evaluating interference, and optionally including decoding the set of received probe signals and/or compensating for interference.

Radarsystem zur Umfelderfassung eines Kraftfahrzeuges mit Mitteln zur Erkennung von über- oder unterfahrbaren Reflektionspunkten

Radarsystem zur Umfelderfassung eines Kraftfahrzeugs mit - Sendemitteln zur Abstrahlung von Sendesignalen mit einer oder mehreren Sendeantennen, - Empfangsmitteln zum Empfang von an Objekten reflektierten Sendesignalen mit einer oder mehreren Empfangsantennen und - Signalverarbeitungsmitteln zur Prozessierung der empfangenen Signale, dadurch gekennzeichnet, dass - Empfangssignale aus unterschiedlichen Kombinationen von Sende- und Empfangsantennen akquiriert werden, wobei jeder Kombination ein relatives Phasenzentrum zugeordnet ist, welches als Summe der beiden Vektoren von einem Referenzpunkt jeweiligen Empfangsantennen definiert ist, - für eine Elevationsmessfähigkeit die relativen Phasenzentren dieser Kombinationen aus Sende- und Empfangsantennen nicht alle gleiche vertikale Position haben, und - in den Signalverarbeitungsmitteln zur Erkennung von unter- und bzw. oder überfahrbaren insbesondere stationären Objekten ein Maß verwendet wird, welches wenigstens eine Abweichung gegenüber den ...

Adaptive transmission and interference cancellation for MIMO radar

A radar system has different modes of operation. In one mode the radar operates as a single-input, multiple-output (SIMO) radar system utilizing one transmitted signal from one antenna at a time. Codes with known excellent autocorrelation properties are utilized in this mode. At each receiver the response after correlating with various possible transmitted signals is measured in order to estimate the interference that each transmitter will represent at each receiver. The estimated effect of the interference from one transmitter on a receiver that correlates with a different code is used to mitigate the interference. In another mode, the radar operates as a MIMO radar system utilizing all the antennas at a time. Interference cancellation of the non-ideal cross correlation sidelobes when transmitting in the MIMO mode are employed to remove ghost targets due to unwanted sidelobes.

HYBRID METHOD FOR TIME-OF-ARRIVAL-BASED RANGING

A method includes: receiving a ranging signal from the transmitter comprising a set of multiplexed sub-signals, each multiplexed sub-signal characterized by a frequency in a set of frequencies; calculating a time-based time-of-arrival estimate based on the series of time-domain samples of the ranging signal; calculating a time-based uncertainty of the time-based time-of-arrival; for each sub-signal pair in a subset of multiplexed sub-signals of the set of multiplexed sub-signals, extracting a phase difference of the sub-signal pair; calculating a phase-based time-of-arrival estimate based on the phase difference of each sub-signal pair in the subset of multiplexed sub-signals; calculating a phase-based uncertainty of the phase-based time-of-arrival estimate; and calculating a hybrid time-of-arrival estimate as a weighted combination of the time-based time-of-arrival estimate, the phase-based time-of-arrival estimate, based on the time-based uncertainty and the phase-based uncertainty.

Sensorsystem und Verfahren zum Detektieren von Objekten in einer Umgebung eines Fahrzeugs

Die vorliegende Erfindung betrifft ein Sensorsystem (10) zum Detektieren von Objekten (12) in einer Umgebung eines Fahrzeugs (14), mit: einem ersten Radarsensor (16) und einem zweiten Radarsensor (18), wobei der erste Radarsensor und der zweite Radarsensor als frequenzmodulierte Dauerstrichradarsensoren ausgebildet sind; ein erster Sichtbereich (20) des ersten Radarsensors zumindest teilweise einem zweiten Sichtbereich (22) des zweiten Radarsensors entspricht; und ein Frequenzmodulationsmuster eines Sendesignals des ersten Radarsensors eine Vielzahl von Frequenzänderungen (24) mit positiver Änderungsrate umfasst und ein Frequenzmodulationsmuster eines Sendesignals des zweiten Radarsensors eine Vielzahl von Frequenzänderungen (26) mit negativer Änderungsrate umfasst. The present invention relates to a sensor system (10) for detecting objects (12) in the vicinity of a vehicle (14), comprising: a first radar sensor (16) and a second radar sensor (18), the first radar sensor and the second radar sensor as frequency-modulated continuous wave radar sensors are formed; a first field of view (20) of the first radar sensor at least partially corresponds to a second field of view (22) of the second radar sensor; and a frequency modulation pattern of a transmission signal of the first radar sensor comprises a plurality of frequency changes (24) with a positive rate of change and a frequency modulation pattern of a transmission signal of the second radar sensor comprises a plurality of frequency changes (26) with a negative rate of change.

AKUSTISCHES OBERFLÄCHENWELLENFILTER IN FLIP CHIP TECHNOLOGIE

RADAR DEVICE

This radar device is configured such that each of transmission radars (1-1)-(1-NT x) uses, as a phase modulation amount, a value determined from: any one value among 0 and a positive integer value equal to or smaller than a result obtained by dividing number of hits of transmission RF signals by number NTx of the transmission radars (1-1)-(1-NTx); a hit number h of the transmission RF signals; and the number H of the hits.

RECONFIGURABLE RADAR UNIT, INTEGRATED CIRCUIT AND METHOD THEREFOR

A reconfigurable radar unit is described that includes: a millimetre wave (mmW) transceiver (Tx/Rx) circuit; a mixed analog and baseband integrated circuit; and a signal processor circuit. The mmW Tx/Rx circuit and mixed analog and baseband integrated circuit and signal processor circuit are configured to support a plurality of radar operational modes. a radar sensitivity monitor and architecture reconfiguration control unit (260) is coupled to the signal processor circuit and is configured to monitor a radar performance and, in response thereto, initiate a change in the radar operational mode. In this manner, a large number of radar operational modes is supported and can be dynamically adopted by the reconfigurable radar unit dependent upon any prevailing radar performance condition ...

Power control for improved near-far performance of radar systems

A radar system includes a transmitter, a receiver and a processor. The receiver receives radio signal that includes the transmitted radio signal reflected from targets in the environment. The received radio signal is provided to the processor. The processor samples the received radio signal during a plurality of time intervals to produce a sampled stream. The different time intervals of the plurality of time intervals will contain different signal levels of radio signals reflected from the targets. The processor also selects a particular time interval of the plurality of time intervals that is free of samples of radio signals reflected off of the targets that are closer than a first threshold distance from an equipped vehicle. The transmitter and/or the receiver is adjusted such that samples of radio signals reflected off of targets that are farther than the first threshold distance are detected.

PHASE MODULATED CONTINUOUS WAVE RADAR SYSTEM THAT USES VELOCITY LABELED MULTIPLEXING FOR GENERATING

A phase modulated continuous wave (PMCW) multiple input multiple output (MIMO) radar system is described herein. The radar system is configured to compute range, velocity, and direction of arrival angle of objects relative to the radar system. The radar system includes several transmitting antennas and several receiving antennas, where selected transmitting antennas simultaneously transmit radar signals based on the same modulation signal. Per transmitting antenna, the transmissions are modulated with respective phase offsets on a per pulse repetition interval (PRI) basis. Hence, a coupling between phase shifts over PRI and transmitter positions is established. Effectively, then, each transmitting antenna is labeled with a velocity offset that corresponds to the phase rate of change assigned to the transmitting antenna. This approach is referred to herein as velocity-labeled multiplexing (VLM).

RADARSYSTEM MIT ANORDNUNGEN UND VERFAHREN ZUR ENTKOPPLUNG VON SENDE- UND EMPFANGSSIGNALEN SOWIE UNTERDRÜCKUNG VON STÖREINSTRAHLUNGEN

Multicode Transmitter

In a radar or communications system, a signal 102 is split into at least two low power signals, possibly by a feed network 104. Each of these signals is encoded, wherein the encoding comprises convolving each low power portion of the signal with a respective different code from a coding waveform generator 111 which may be orthogonal waveforms in the form of Gold Code, code division multiple access (CDMA), or frequency division multiple access (FDMA) waveforms. The coded low power portions of the signal are then summed by summer 115 and the resultant coded signal is transmitted by an antenna element 114 towards a target. An antenna element 116 receives the resultant coded signal reflected from the object, which is then decoded by at least two decoders, possibly by convolving the coded signal with a complex conjugate of a sum of the different codes from coding waveform generator 111a. The decoded signal is then correlated by correlator 118 to produce a complete received signal. The transmitter ...

AKUSTISCHES OBERFLÄCHENWELLENFILTER IN FLIP CHIP TECHNOLOGIE

Using a side-communication channel for exchanging radar information to improve multi-radar coexistence

Methods, systems, and devices for wireless communications are described. In some systems, radio signals may reach a receiving antenna at a user equipment by two or more paths, which can cause interference (e.g., destructive multipath interference, constructive multipath interference, etc.). To reduce the interference, the user equipment may perform interference suppression, shaping, or both based on choosing radar waveform patterns that are varied across chirps. In one aspect, the user equipment (e.g., a vehicle) may identify waveform patterns selected by nearby vehicles based on side channel or centralized signaling and may suppress or shape interference by selecting waveform parameters based on this information. In one aspect, the pattern of waveform parameters is chosen from a codebook of patterns. The selected pattern can be broadcasted to the other vehicles using a side-communication channel.

Centralized object detection sensor network system

A centralized object detection sensor network system comprises a central unit configured to generate one or more probing signals for detecting one or more objects in an environment, and one or more transponders configured to receive the one or more probing signals and convert them into free space waves for detecting the one or more objects in the environment. The one or more transponders are communicatively coupled to the central unit through one or more communication links.

SYSTEM FOR CONTROLLING A TRAFFIC MANAGEMENT SYSTEM AT AN INTERSECTION

The invention relates to a system for controlling a traffic management system at an intersection of at least two traffic routes, wherein the system has - a first radar sensor, which has a first detection region, for detecting road users on the first traffic route, - a second radar sensor, which has a second detection region, for detecting road users on the second traffic route, wherein the first detection region and the second detection region overlap in at least one overlapping region, and - an electronic data processing device, which is designed to combine the sensor data of the first radar sensor and the sensor data of the second radar sensor into combination signals, at least in part, and to control the traffic management system at the intersection at least also as a function of combination signals.

RADAR DEVICE

This radar device is configured such that each of transmission radars (1-1)-(1-NT x) uses, as a phase modulation amount, a value determined from: any one value among 0 and a positive integer value equal to or smaller than a result obtained by dividing number of hits of transmission RF signals by number NTx of the transmission radars (1-1)-(1-NTx); a hit number h of the transmission RF signals; and the number H of the hits.

APERTURE CODING FOR A SINGLE APERTURE TRANSMIT RECEIVE SYSTEM

An integrated circuit (IC) of a frequency-modulated continuous wave (FMCW) coded aperture radar (CAR) configured to step through a range of frequencies in each sweep and a method of assembling the FMCW CAR are described. The IC includes an antenna element to transmit and receive at a given time duration, a transmit channel to process a signal for transmission, the transmit channel including a transmit switch to change a state of a transmit phase shifter between two states based on a first code, and a receive channel to process a received signal, the receive channel including a receive switch to change a state of a receive phase shifter between two states based on a second code. The IC also includes a switch controller to control the first code and the second code, wherein the switch controller controls the first code to remain constant within the sweep.

Radar system having arrangements and methods for the decoupling of transmitting and receiving signals and for the suppression of interference radiation

Using a radar system in a motor vehicle, high frequency individual signal pulses are transmitted from at least one transmitting antenna, and at least one receiving antenna receives reception signals formed by reflection of the transmitted signal pulses from objects in the surroundings. The reception signals are mixed with the high-frequency signal to produce low-frequency mixed signals representing the sequence of individual signal pulses. The phase angle of the mixed signals is varied over successive individual signal pulses thereof by varying the phase angle of: the successive individual transmitted signal pulses, the high-frequency signals used for the mixing, and/or the mixed signals. In further processing of the mixed signals to determine the distance and the relative velocity of detected objects, an interference component can be separated and/or suppressed from a useful signal component because the useful signal component has the known phase angle variation but the interference component ...

SOFTWARE DEFINED AUTOMOTIVE RADAR SYSTEMS

A radar system processes signals in a flexible, adaptive manner to determine range, Doppler (velocity) and angle of objects in an environment. The radar system processes the received signal to achieve different objectives depending on the environment, the current information stored in the radar system, and/or external information provided to the radar system. The system allows improved resolution of range, Doppler and/or angle depending on the desired objective.

Radar System Having Arrangements and Methods for the Decoupling of Transmitting and Receiving Signals and for the Suppression of Interference Radiation

Radar system for covering the surroundings, designed such that one or several sequences of identical or similar individual signals are radiated per transmitting antenna in a measuring cycle, which sequences are interlaced where appropriate, wherein the average time interval of said individual signals is greater than the propagation time of received signals that corresponds to the maximally interesting distance, particularly for determining the relative velocity of objects and for increasing the detection sensitivity. Receiving means are provided in which the signals that are received by reflection from objects are mixed with high-frequency signals, whereby low-frequency receiving signals are generated that represent sequences of individual signals, and the phase position thereof is varied over successive low-frequency individual receiving signals by varying the phase position of the individual transmitting signals and/or of the high-frequency signals used for mixing and/or of the low-frequency ...

Phase coded linear frequency modulation for radar

Disclosed herein are embodiments that relate to phase coded linear frequency modulation for a radar system. Embodiments include transmitting at least two signal pulses. The transmitting includes transmitting a first pulse with a first phase modulation and a first chip rate, and transmitting a second pulse with a second phase modulation and a second chip rate. The second chip rate may be different than the first chip rate. Embodiments also include receiving a signal that includes at least two reflection signals associated with reflection of the at least two transmitted signal pulses. Embodiments further include processing the received signal to determine target information. The processing includes filtering the received signal to time-align the at least two reflection signals. The filtering includes applying a frequency-dependent time delay to one or more of the at least two reflection signals. Additionally, embodiments include removing phase code modulations from the time-aligned reflection ...

RADAR DEVICE

A radar device is configured in such a manner that each of transmission radars uses, as the amount of phase modulation, a value determined from either one of a positive integer value that is less than or equal to a result of division obtained by dividing the number of hits of a transmission RF signal by the number of the transmission radars and a value of 0; a hit number h of the transmission RF signal; and the number of hits.

SENSING IN WIRELESS COMMUNICATIONS SYSTEM

DETECTION AND PREVENTION OF A CYBER PHYSICAL ATTACK AIMED AT SENSORS

A method for processing signals of active sensor systems including processing an emitted signal to include at least one distinguishing feature, the emitted signal emitted by an active sensor system adapted to intercept a reflection of the emitted signal, and to analyze the reflection of the emitted signal for determining at least one parameter of at least one object located in a space, analyzing an intercepted portion to verify the at least one distinguishing feature in the intercepted portion, and processing the intercepted portion as the reflection of the emitted signal when the at least one distinguishing feature is verified.

PHASE MODULATED CONTINUOUS WAVE RADAR SYSTEM THAT USES VELOCITY LABELED MULTIPLEXING FOR GENERATING DETECTIONS

A phase modulated continuous wave (PMCW) multiple input multiple output (MEM) radar system is described herein. The radar system is configured to compute range, velocity, and direction of arrival angle of objects relative to the radar system. The radar system includes several transmitting antennas and several receiving antennas, where selected transmitting antennas simultaneously transmit radar signals based on the same modulation signal. Per transmitting antenna, the transmissions are modulated with respective phase offsets on a per pulse repetition interval (PRI) basis. Hence, a coupling between phase shifts over PRI and transmitter positions is established. Effectively, then, each transmitting antenna is labeled with a velocity offset that corresponds to the phase rate of change assigned to the transmitting antenna. This approach is referred to herein as velocity-labeled multiplexing (VLM).

Adaptive transmission and interference cancellation for MIMO radar

A radar sensing system for a vehicle includes a transmit pipeline, a receive pipeline, and a memory module. The transmit pipeline includes transmitters for transmitting radio signals. The receive pipeline includes receivers for receiving radio signals that include the transmitted radio signals transmitted by the transmitters and reflected from objects in an environment. The memory module is configured to store interference estimates for each receiver of the plurality of receivers that are estimates of interfering radio signals received by each of the receivers that are transmitted by each respective transmitter of the plurality of transmitters. Each receiver of the plurality of receivers is configured to mitigate interference that is due to interfering radio signals transmitted by the plurality of transmitters, as defined by the stored interference estimates of the plurality of transmitters for each particular receiver.

RADAR SYSTEM THAT USES VELOCITY LABELED MULTIPLEXING FOR GENERATING DETECTIONS

A fast ramp frequency modulated continuous wave (FMCW) radar system is described herein, where the fast ramp FMCW radar system is configured to employ velocity labeled multiplexing (VLM) in connection with generating detections for objects in a scene. Transmitters in the radar system are assigned different velocity labels that corresponds to different phase rates of change of consecutive chirps in signals emitted by the transmitters. Approaches for generating detections based upon echo signals that correspond to the emitted signals are also described herein.

Radar device

A radar device employs a configuration provided with: a receiver which, in operation, receives one or more radar transmission signals transmitted from another radar device, in an interference measurement segment in which transmission of a radar transmission signal from the radar device is stopped; A/D conversion circuitry which, in operation, converts the one or more radar transmission signals from the other radar device received by the receiver from one or more analog signals into one or more digital signals; and an interference detection circuitry which, in operation, performs a correlation calculation between each of one or more discrete samples that is the one or more digital signals and a prescribed coefficient sequence to detect one or more prescribed frequency components included in the one or more digital signals, as one or more interference signal components.

Adaptive filtering for FMCW interference mitigation in PMCW radar systems

A radar sensing system for a vehicle includes a transmitter and a receiver. The transmitter is configured for installation and use on a vehicle. The transmitter is configured to transmit radio signals. The receiver is configured for installation and use on the vehicle. The receiver is configured to receive radio signals that include (i) the transmitted radio signals transmitted by the transmitter and reflected from objects in an environment, and (ii) other radio signals that include radio signals transmitted by at least one other radar sensing system. The receiver is configured to filter frequency modulated continuous wave (FMCW) radio signals from the received radio signals to produce filtered radio signals. The receiver is further configured to select between (i) the filtered radio signals, and (ii) the received radio signals before filtering. The filtered radio signals are selected when the other radio signals include FMCW radio signals.

Radarsensor mit zweidimensionaler Strahlschwenkung und L-, U- oder T-förmiger Struktur für den Verbau im Bereich des Front-Kühlers beim Automobil

Erfindungsgemäß werden zwei Vorrichtungen und zwei Verfahren zur zweidimensionalen Strahlschwenkung und damit zur Bestimmung der Position eines Objekts im dreidimensionalen Raum, zur Verfügung gestellt. Dabei umfasst die Vorrichtung eine Vielzahl von Sendern und Empfängern, welche orthogonal zueinander in einer L-, U- oder T-förmigen Struktur angeordnet sind. Bei der einen Vorrichtung werden die Sendesignale kombiniert frequenz- und phasenmoduliert, bei der anderen Vorrichtung wird ein monofrequentes Trägersignal binär phasenmoduliert. Dabei handelt es sich um eine hochfrequente Codierung mit einer großen Codelänge, welche nach dem Pseudo-Zufallszahlenprinzip generiert wird.Die Empfangssignale, welche zunächst die Information aller Sender enthalten, werden decodiert und somit in Subsignale aufgespaltet, welche einem zweidimensionalen virtuellen Array zugeordnet werden können. Nach der Methode der digitalen Strahlformung werden die einzelnen Signale der virtuellen Antennenelemente zu mehreren ...

Multicode Transmitter

Multicode Transmitter

Radar interference mitigation method and apparatus

Methods and apparatuses pertaining to radar interference mitigation are described. A processor associated with an apparatus may generate a plurality of wave frames such that one or more aspects of the plurality of wave frames vary from one wave frame to another wave frame of the plurality of wave frames. Each of the plurality of wave frames may respectively include a plurality of chirps. A wireless transmitter associated with the apparatus may transmit the plurality of wave frames. A wireless receiver associated with the apparatus may receive one or more reflected waves comprising at least a portion of one or more of the wave frames reflected by an object. The processor may determine a distance between the object and the apparatus, a speed of the objet, or both, based on an analysis of the one or more reflected waves.

RADAR DEVICE

System and method for radar interference mitigation

A system for radar interference mitigation, preferably including one or more transmitter arrays, receiver arrays, and/or signal processors, and optionally including one or more velocity sensing modules. A method for radar interference mitigation, preferably including transmitting a set of probe signals, receiving a set of reflected probe signals, and/or evaluating interference, and optionally including decoding the set of received probe signals and/or compensating for interference.

Method of system compensation to reduce the effects of self interference in frequency modulated continuous wave altimeter systems

An altimeter system is provided. The altimeter system includes a receiver mixer including an antenna-input and a local-oscillator-input; a transceiver circulator communicatively coupled to an antenna via a transmission line having a selected length and communicatively coupled to the antenna-input of the receiver mixer; and a transmitter configured to output a transmitter signal to the antenna via the transceiver circulator. The transmitter signal is frequency modulated with a linear ramp. The transmitter is communicatively coupled to the receiver mixer to input a local oscillator signal at the local-oscillator-input of the receiver mixer. The receiver mixer is communicatively coupled to input a target-reflected signal from the antenna at the antenna-input of the receiver mixer. The selected length of the transmission line is set so that a composite-leakage signal at the antenna-input of the receiver mixer has a linear phase across a sweep bandwidth.

Software defined automotive radar

A radar sensing system including transmit antennas and receive antennas, transmitters, receivers, and a controller. The system further includes a transmit antenna switch selectively coupling each of the transmitters to a respective transmit antenna, and a receive antenna switch selectively coupling at least one receiver of the receivers to respective receive antennas. A quantity of receivers is different from a quantity of the receive antennas. The controller is operable to select a quantity of receivers to be coupled to receive antennas to realize a desired quantity of virtual receivers. The controller is operable to select an antenna pattern as defined by the selected quantity of receivers coupled to receive antennas.

Radarsystem

Ein Radarsystem (1) umfasst Radare (11 und 12) und eine Steuereinrichtung (9). Die Steuereinrichtung (9) steuert Signalverlaufmuster der Radare (11 und 12). Empfängt eine Signalverarbeitungseinheit (23) eines jeden der Radare eine Anweisung von der Steuereinrichtung (9), dann wählt die Signalverarbeitungseinheit ein Frequenzmodulationsmuster eines VCO (25) zwischen einer FM-CW-Betriebsart (3) und einer CW-Betriebsart (4) zum Betriebsartumschalten (230) aus, die in einem Signalverlaufspeicher (24) gespeichert sind, und gibt dann eine Funkwelle von einer Sendeantenne (21) aus. Dann weist die Steuereinrichtung (9) jede Signalverarbeitungseinheit (23) für ein Frequenzmodulationsmuster eines jeden Radars oder eine Ausgabezeitgabe von jedem Muster derart an, dass eine Zeit nicht kontinuierlich ist, zu der von den Radaren (11 und 12) ausgegebene kontinuierliche Wellensignale die gleiche Frequenz aufweisen.

Verfahren zur Ermittlung von wenigstens einer Objektinformation wenigstens eines Objektes, das mit einem Radarsystem insbesondere eines Fahrzeugs erfasst wird, Radarsystem und Fahrerassistenzsystem

Es werden ein Verfahren zur Ermittlung von wenigstens einer Objektinformation wenigstens eines Objektes (18), das mit einem Radarsystem (12) insbesondere eines Fahrzeugs (10) erfasst wird, ein Radarsystem (12) und ein Fahrerassistenzsystem (20) mit einem Radarsystem (12) beschrieben. Bei dem Verfahren werden mit wenigstens einem Sender (26a, 26b) Sendesignale (32a, 32b) in einen Überwachungsbereich (14) des Radarsystems (12) gesendet. Mit wenigstens einem Empfänger (30a, 30b) werden an dem wenigstens einen Objekt (18) reflektierte Echos der Sendesignale (32a, 32b) als Empfangssignale (34a, 34b) empfangen und sofern erforderlich in eine für eine elektronische Steuer- und/oder Auswerteeinrichtung (28) verwertbare Form gebracht. Die Empfangssignale (34a, 34b) wenigstens einer zweidimensionalen diskreten Fourier-Transformation unterzogen werden. Aus dem Ergebnis der wenigstens einen zweidimensionalen diskreten Fourier-Transformation wenigstens ein Zielsignal ermittelt wird aus dem wenigstens ...

Multiple radar interference suppressor

A multiple radar interference suppressor for use in a missile scoring system. The multiple radar interference suppressor phase locks the pulse repetition frequency of each drone (unmanned) aircraft to one other drone of the plurality of aircrafts. The phase of the pulse repetition frequency of each of the transmitting radars of the drones is slightly offset from one another. As a result, mutual interference among the drones transmitting radar signals and receiving radar signals of other drones is overcome. Lastly, the transmitted signals and received signals are encoded so that unwanted reflections and scattering from a target may be substantially eliminated or suppressed.

Phase coded FMCW radar

In an embodiment, a method of operating a radar includes: generating a set of chirps; transmitting the set of chirps; receiving chirps corresponding to the transmitted set of chirps; using a finite state machine (FSM) to apply a phase shift to each of the transmitted chirps or each of the received chirps based on a code; and demodulating the received chirps based on the code.

Fahrzeug-Radarsystem und Verfahren zur Bestimmung einer Position zumindest eines Objekts relativ zu einem Fahrzeug

METHODS FOR RADAR COEXISTENCE

A method and apparatus for selecting frequency modulated continuous wave waveform parameters for multiple radar coexistence by a user equipment is described. The user equipment may transmit a radar waveform consisting of a number of chirps, with each chirp having a same duration. The user equipment may vary waveform parameters of the radar waveform for at least a subset of the number of chirp, where the waveform parameters may be chosen from a codebook comprising at least one codeword of parameters. Reflected radar waveforms are received and processed where the processing includes applying a fast time discrete Fourier transform to reflected radar waveforms to produce a one dimension peak in a time delay dimension for each reflected waveform; and applying a slow time discrete Fourier transform to the reflected radar waveforms, where peaks for the reflected waveforms are added.

Adaptive filtering for FMCW interference mitigation in PMCW radar systems

A radar sensing system for a vehicle includes a transmitter configured for installation and use on a vehicle and able to transmit radio signals. The radar sensing system also includes a receiver and a processor. The receiver is configured for installation and use on the vehicle and able to receive radio signals. The received radio signals include transmitted radio signals that are reflected from objects in the environment. The received radio signals further include radio signals transmitted by at least one other radar system. The processor samples the received radio signals to produce a sampled stream. The processor is configured to control an adaptive filter. Responsive to the processor, the adaptive filter is configured to filter the sampled stream, such that the radio signals transmitted by the at least one other radar system are removed from the received radio signals.

Methods and systems for vehicle radar coordination and interference reduction

A method is provided that includes a vehicle receiving data from an external computing device indicative of at least one other vehicle in an environment of the vehicle. The vehicle may include a sensor configured to detect the environment of the vehicle. The at least one other vehicle may include at least one sensor. The method also includes determining a likelihood of interference between the at least one sensor of the at least one other vehicle the sensor of the vehicle. The method also includes initiating an adjustment of the sensor to reduce the likelihood of interference between the sensor of the vehicle and the at least one sensor of the at least one other vehicle responsive to the determination.

Methods for radar coexistence

A method and apparatus for selecting frequency modulated continuous wave waveform parameters for multiple radar coexistence by a user equipment is described. The user equipment may transmit a radar waveform consisting of a number of chirps, with each chirp having a same duration. The user equipment may vary waveform parameters of the radar waveform for at least a subset of the number of chirp, where the waveform parameters may be chosen from a codebook comprising at least one codeword of parameters. Reflected radar waveforms are received and processed where the processing includes applying a fast time discrete Fourier transform to reflected radar waveforms to produce a one dimension peak in a time delay dimension for each reflected waveform; and applying a slow time discrete Fourier transform to the reflected radar waveforms, where peaks for the reflected waveforms are added.

Radarsystem mit Elevationsmessfähigkeit

Radarsystem mit verbesserter Winkelbildung

ÖFFNUNGSKODIERUNG FÜR SENDE- UND EMPFANGSSYSTEME MIT EINER EINZELNEN ÖFFNUNG

Es werden eine integrierte Schaltung (IC) eines mittels Dauerstrich-Frequenzmodulation (FMCW) codierten Aperturradars (PKW), konfiguriert, um schrittweise durch einen Frequenzbereich in jedem Durchlauf zu gehen, und ein Verfahren für den Zusammenbau des FMCW CAR beschrieben. Die IC beinhaltet ein Antennenelement zum Übertragen und Empfangen innerhalb eines gegebenen Zeitraums, ein Übertragungskanal zur Verarbeitung eines Übertragungssignals, um einen Status eines Übertragungsphasenschiebers zwischen zwei Zuständen zu ändern, basierend auf einem ersten Code, und einen Empfangskanal zur Verarbeitung eines empfangenen Signals, der Empfangskanal beinhaltet einen Empfangstaster zum Ändern eines Zustands eines Aufnahmephasenschiebers zwischen zwei Zuständen basierend auf einem zweiten Code. Die IC beinhaltet ferner eine Tastensteuerung zur Steuerung des ersten Codes, worin die Tastensteuerung den ersten Code steuert, um innerhalb des Durchlaufs konstant zu bleiben.

Radar system comprising overlapping transmitter and receiver antennas

A radar system for recording the environment of a motor vehicle includes transmission antennas for emitting transmission signals, receiver antennas for receiving transmission signals reflected by objects in the environment, and a signal processor for processing the received signals. The antennas are planar and are situated on a level surface. Received signals are acquired from different combinations of the transmitter and receiver antennas. In the signal processor, the angular position of objects in a spatial direction R is estimated from the received signals, based on recognition that the received signals from an individual object have different phase positions depending on the angular position of the object in the spatial direction R. Two of the transmitter and receiver antennas overlap in the spatial direction R without coinciding, by special arrangements or configurations of the transmitter and receiver antennas.

Radar system that uses velocity labeled multiplexing for generating detections

A fast ramp frequency modulated continuous wave (FMCW) radar system (100) is described herein, where the fast ramp FMCW radar system is configured to employ velocity labeled multiplexing (VLM) in connection with generating detections for objects in a scene. Transmitters (110, 112) in the radar system are assigned different velocity labels that corresponds to different phase rates of change of consecutive chirps in signals emitted by the transmitters. Approaches for generating detections based upon echo signals that correspond to the emitted signals are also described herein.

METHOD AND SYSTEM FOR TARGET DETECTION USING MIMO RADAR

Radar sensor having a two-dimensional beam scan and L-, U- or T- shaped structure for mounting in the region of the front radiator of an automobile

Apparatuses and methods for two-dimensional beam scanning for determining the position of an object in three-dimensional space are provided. An apparatus comprises a multiplicity of transmitters and receivers, which are arranged orthogonal to one another in an L-, U- or T-shaped structure. In one apparatus, the transmission signals are frequency and phase modulated in combination; and in another apparatus a single frequency carrier signal is subject to binary phase modulation. Here, this is a high-frequency encoding with a great code length, which is generated according to the pseudo-random number principle. The received signals, which include information from all transmitters, are decoded and consequently split into sub-signals, which can be assigned to a two-dimensional virtual array. According to the method of digital beamforming, the individual signals of the virtual antenna elements are formed into a plurality of highly focused beams in the horizontal and vertical direction.

Radar system for use in driver assistance system in motor vehicle for detecting surroundings, has transmitting units for radiating transmission signals and receiving units for receiving transmission signals reflected on objects

Es wird ein Radarsystem zur Umfelderfassung offenbart, das Objekte detektiert und jeweils wenigstens ein Objektmaß wie z.B. Entfernung, Relativgeschwindigkeit, azimutaler Winkel zum Radarsystem bestimmt, wobei die Bestimmung wenigstens eines dieser Objektmaße nicht über seinen gesamten Messbereich eindeutig ist. Diese Detektion von Objekten und die Bestimmung ihres wenigstens einen Objektmaßes wird zyklisch wiederholt und die Objekte werden über aufeinanderfolgende Zyklen in einem sogenannten Tracking verfolgt. Von Zyklus zu Zyklus wird wenigstens ein Parameter für die Ansteuerung der Sende- und Empfangsmittel und bzw. oder für den zeitlichen Ablauf der Prozessierung der empfangenen Signale so variiert, dass für wenigstens ein mehrdeutiges Objektmaß die Mehrdeutigkeitsverhältnisse variieren, und dieses wenigstens ein Objektmaß mit Hilfe seiner in unterschiedlichen Zyklen unterschiedlichen Mehrdeutigkeit nach Beobachtung und Tracking über wenigstens zwei Zyklen eindeutig bestimmt wird.

Method of system compensation to reduce the effects of self interference in frequency modulated continuous wave altimeter systems

An altimeter system is provided. The altimeter system includes a receiver mixer including an antenna-input and a local-oscillator-input; a transceiver circulator communicatively coupled to an antenna via a transmission line having a selected length and communicatively coupled to the antenna-input of the receiver mixer; and a transmitter configured to output a transmitter signal to the antenna via the transceiver circulator. The transmitter signal is frequency modulated with a linear ramp. The transmitter is communicatively coupled to the receiver mixer to input a local oscillator signal at the local-oscillator-input of the receiver mixer. The receiver mixer is communicatively coupled to input a target-reflected signal from the antenna at the antenna-input of the receiver mixer. The selected length of the transmission line is set so that a composite-leakage signal at the antenna-input of the receiver mixer has a linear phase across a sweep bandwidth.

METHOD OF SYSTEM COMPENSATION TO REDUCE THE EFFECTS OF SELF INTERFERENCE IN FREQUENCY MODULATED CONTINUOUS WAVE ALTIMETER SYSTEMS

An altimeter system is provided. The altimeter system includes a receiver mixer including an antenna-input and a local-oscillator-input; a transceiver circulator communicatively coupled to an antenna via a transmission line having a selected length and communicatively coupled to the antenna-input of the receiver mixer; and a transmitter configured to output a transmitter signal to the antenna via the transceiver circulator. The transmitter signal is frequency modulated with a linear ramp. The transmitter is communicatively coupled to the receiver mixer to input a local oscillator signal at the local-oscillator-input of the receiver mixer. The receiver mixer is communicatively coupled to input a target-reflected signal from the antenna at the antenna-input of the receiver mixer. The selected length of the transmission line is set so that a composite-leakage signal at the antenna-input of the receiver mixer has a linear phase across a sweep bandwidth.

Orthogonal separation device and orthogonal separation method

An orthogonal separation device of the invention includes a demodulator that performs a demodulation process corresponding to each of a plural number N of antennas for each of a plural number P (=M×N) of pulse waves (R11 to R1M), . . . , (RN1 to RNM) which arrives at the plural number N of antennas by transmitting, at the same time, a plural number M of pulse waves having phases ϕ1 to ϕM set as different arrays of known discrete values and that generates a plural number P of demodulated signals (R′11 to (R′1M), . . . (R′N1 to R′NM), and includes a phase adjuster that adjusts difference among the phases of a plural number P of demodulated signals (R′11 to R′1M), . . . , (R′11 to R′NM) according to the arrays of known discrete values and generates a plural number P of in-phase signals (r11 to r1M), . . . , (rN1 to rNM).

Radarsystem mit überlappenden Sende- und Empfangsantennen

Radar Interference Mitigation Method And Apparatus

Methods and apparatuses pertaining to radar interference mitigation are described. A processor associated with an apparatus may generate a plurality of wave frames such that one or more aspects of the plurality of wave frames vary from one wave frame to another wave frame of the plurality of wave frames. Each of the plurality of wave frames may respectively include a plurality of chirps. A wireless transmitter associated with the apparatus may transmit the plurality of wave frames. A wireless receiver associated with the apparatus may receive one or more reflected waves comprising at least a portion of one or more of the wave frames reflected by an object. The processor may determine a distance between the object and the apparatus, a speed of the objet, or both, based on an analysis of the one or more reflected waves.

Power control for improved near-far performance of radar systems

A radar sensing system includes at least one transmitter, at least one receiver and a processor. The at least one transmitter transmits a power shaped radio signal. The at least one receiver receives radio signal that includes the transmitted radio signal reflected from targets in the environment. The received radio signal is provided to the processor. The processor samples the received radio signal during a plurality of time intervals to produce a sampled stream. The different time intervals of the plurality of time intervals will contain different signal levels of radio signals reflected from the targets. The processor also selects a particular time interval of the plurality of time intervals that is free of samples of radio signals reflected off of the targets that are closer than a first threshold distance from an equipped vehicle.

METHOD FOR RADAR INTERFERENCE MITIGATION

The method for mitigating radar interference between radar sensor devices (400a-400d) on different vehicles (100a-100d), including the following steps performed by a first radar sensor device (100a) on a first vehicle (100a): determining information about a driving scenario in a surrounding environment of the vehicle (100a), based on information received from multiple sources, based on the determined information about the driving scenario, determining how to change at least one radar parameter of the first radar sensor device (100a) to avoid a possible radar interference, and changing said at least one radar parameter according to the determination.

Radarsensor mit frontaler und seitlicher Abstrahlung

System zum Steuern einer Verkehrsführung an einer Kreuzung

Die Erfindung betrifft ein System zum Steuern einer Verkehrsführung an einer Kreuzung wenigstens zweier Verkehrswege, wobei das System• einen ersten Radarsensor, der einen ersten Erfassungsbereich aufweist, zum Erfassen von Verkehrsteilnehmern auf dem ersten Verkehrsweg,• einen zweiten Radarsensor, der einen zweiten Erfassungsbereich aufweist, zum Erfassen von Verkehrsteilnehmern auf dem zweiten Verkehrsweg, wobei sich der erste Erfassungsbereich und der zweite Erfassungsbereich in wenigstens einem Überlappungsbereich überlappen, und• eine elektronische Datenverarbeitungseinrichtung aufweist, die eingerichtet ist, die Sensordaten des erste Radarsensors und die Sensordaten des zweiten Radarsensors zu Kombinationssignalen zumindest teilweise zu kombinieren und die Verkehrsführung an der Kreuzung zumindest auch in Abhängigkeit Kombinationssignale zu steuern.

Phase Coded FMCW Radar

In an embodiment, a method of operating a radar includes: generating a set of chirps; transmitting the set of chirps; receiving chirps corresponding to the transmitted set of chirps; using a finite state machine (FSM) to apply a phase shift to each of the transmitted chirps or each of the received chirps based on a code; and demodulating the received chirps based on the code.

Fahrzeug-Radarsystem und Verfahren zur Bestimmung einer Position zumindest eines Objekts relativ zu einem Fahrzeug

Die Erfindung betrifft ein Fahrzeug-Radarsystem und ein Verfahren zur Bestimmung einer Position zumindest eines Objekts (5) relativ zu einem Fahrzeug. Das Fahrzeug-Radarsystem weist mindestens eine Sendeeinrichtung (4), mindestens drei Empfangseinrichtungen (1, 2, 3) und eine Entfernungsmessungseinrichtung auf. Dabei sind mindestens zwei der Empfangseinrichtungen (1, 3) voneinander räumlich getrennt auf einer Geraden angeordnet. Mindestens eine der weiteren Empfangseinrichtungen (2) ist höhenversetzt zu dieser Geraden angeordnet. The invention relates to a vehicle radar system and a method for determining a position of at least one object (5) relative to a vehicle. The vehicle radar system has at least one transmitting device (4), at least three receiving devices (1, 2, 3) and a distance measuring device. At least two of the receiving devices (1, 3) are arranged spatially separated from each other on a straight line. At least one of the further receiving devices (2) is arranged at a height offset from this straight line.

Verfahren zur Erkennung wenigstens eines Bewegungsmusters wenigstens eines Zielobjekts, das mit einem Radarsystem eines Fahrzeugs erfasst wird, Radarsystem und Fahrerassistenzsystem

Es werden ein Verfahren zur Erkennung wenigstens eines Bewegungsmusters (44) wenigstens eines Zielobjekts (38), das mit einem Radarsystem (12) eines Fahrzeugs (10) erfasst wird, ein Radarsystem (12) und ein Fahrerassistenzsystem (20) beschrieben. Bei dem Verfahren werden mit wenigstens einem Sender (26a, 26b) Sendesignale (32a, 32b) in einen Überwachungsbereich (14) des Radarsystems (12) gesendet. Mit wenigstens einem Empfänger (30) werden an dem wenigstens einen Zielobjekt (38) reflektierte Echos der Sendesignale (32a, 32b) als Empfangssignale (34a, 34b) empfangen. Aus den Empfangssignalen (34a, 34b) wird wenigstens ein Bewegungsmuster (44) des wenigstens einen Zielobjekts (38) ermittelt. Das wenigstens eine Bewegungsmuster (44) des wenigstens einen Zielobjekts (38) wird mit wenigstens einem Referenz-Bewegungsmuster verglichen. Falls das wenigstens eine Bewegungsmuster (44) innerhalb einer vorgebbaren Toleranz wenigstens einem der Referenz-Bewegungsmuster entspricht, wird wenigstens eine ...

Multi-radar coexistence using phase-coded frequency modulated continuous wave waveforms

Methods, systems, and devices for radar signaling are described. In some systems, devices may implement techniques to support coexistence for multiple radar sources using a phase-coded frequency modulated continuous wave waveform. A user equipment (e.g., a vehicle) may select a codeword (e.g., a pattern of parameters) from a codebook and may derive phase code information and waveform shape parameters from values specified in the codeword. The user equipment may apply phase modulation to at least one chirp of a waveform using the indicated phase code. In some cases, the phase-coded frequency modulated continuous wave waveform may resemble nested Zadoff-Chu sequences, where the waveform resembles a Zadoff-Chu sequence and the phase code resembles another Zadoff-Chu sequence. The phase code may support mitigating interference between radar waveforms that use the same slope and frequency offset parameters for chirps overlapping in time.

METHOD AND APPARATUS FOR RADAR WAVEFORMS USING ORTHOGONAL SEQUENCE SETS

Systems, methods, and apparatus for radar waveforms using orthogonal sequence sets are disclosed. In one or more examples, a vehicle for autonomous driving comprises a radar sensor. In some examples, the radar sensor comprises a waveform transmission module adapted to generate a phase-coded waveform based on a set of concatenated orthogonal sequences. Also, in some examples, the radar sensor comprises a receiver adapted to estimate a range and Doppler from a received echo from the phase-coded waveform. In one or more examples, the orthogonal sequences are Zadoff-Chu (ZC) sequences.

METHOD FOR DETERMINING AT LEAST ONE PIECE OF OBJECT INFORMATION ABOUT AT LEAST ONE OBJECT SENSED BY MEANS OF A RADAR SYSTEM, IN PARTICULAR OF A VEHICLE, RADAR SYSTEM, AND DRIVER ASSISTANCE SYSTEM

Radarsystem zur Umfelderfassung mit Kompensation von Störsignalen

Radarsystem, sowie eine geeignete Verwendung und Verfahren hierfür

Beschrieben wird ein Radarsystem bestehend aus mehreren Teilkomponenten, die jeweils einzeln alle Komponenten eines Radargerätes, die zumindest Sender, Empfänger, einen Mischer und eine Phasenregelschleife umfassen, aufweisen, wobei für jeden Sender ein individueller Phasencode generiert wird; und Sender und Empfänger aller Teilkomponenten des Radarsystems gemeinsam eine virtuelle Gesamtanordnung gemäß dem Multiple Input Multiple Output Verfahren bereitstellen, wobei zumindest eine virtuelle Teilanordnung der Gesamtanordnung, bereitgestellt durch eine Kombination aus Sendern einer Teilkomponente und Empfängern einer Teilkomponente, zumindest eine überlappende Spalte oder eine überlappende Zeile mit einer anderen virtuellen Teilanordnung der Gesamtanordnung aufweist, wobei die zumindest andere virtuelle Teilanordnung durch eine andere Kombination aus Sendern einer Teilkomponente und Empfängern einer Teilkomponente bereitgestellt wird.

Verfahren für ein MIMO-Radar zur eindeutigen Ermittlung von Zielen sowie ein Radar

Verfahren für ein MIMO-Radar zur eindeutigen Ermittlung von Zielen, wobei das Radar mehrere Sendeantennen und mehrere Empfangsantennen aufweist,• wobei jede Sendeantenne mehrere zeitlich aufeinanderfolgende Frequenzrampen (54, 56) aussendet,• wobei die Startphasen (φ, φ) aufeinanderfolgender Frequenzrampen der Sendeantennen gemäß einer periodischen Kodierung variiert werden,• wobei die Empfangsantennen die an einem Ziel reflektierten Frequenzrampen (54, 56) als Empfangssignale detektieren,• wobei die Empfangssignale verarbeitet werden, um ein Spektrum (40) bereitzustellen,• wobei die Energie eines detektierten Ziels innerhalb des Spektrums (40) aufgrund der Kodierung auf mehrere Positionen (42, 44, 46, 48) verteilt ist,• wobei die Kodierung derart gewählt ist, dass die Energieverteilung, bei der jede Position (42, 44, 46, 48) einen Energiewert aufweist, über die Positionen (42, 44, 46, 48) eindeutig verteilt ist,• wobei ein Ziel aus dem Spektrum (40) anhand der eindeutigen Energieverteilung ...

Radarsystem mit breitem Erfassungsbereich und Mitteln zur Vermeidung von Mehrdeutigkeiten bei der Winkelmessung

Radarsystem zur Umfelderfassung eines Kraftfahrzeugs mit - Sendemitteln zur Abstrahlung von Sendesignalen mit einer oder mehreren Sendeantennen, - Empfangsmitteln zum Empfang von an Objekten reflektierten Sendesignalen mit einer oder mehreren Empfangsantennen und - Signalverarbeitungsmitteln zur Prozessierung der empfangenen Signale, dadurch gekennzeichnet, dass - Empfangssignale aus unterschiedlichen Kombinationen von Sende- und Empfangsantennen akquiriert werden, wobei jeder Kombination ein relatives Phasenzentrum zugeordnet ist, welches als Summe der beiden Vektoren von einem Referenzpunkt jeweiligen Empfangsantenne definiert ist, - die dabei benutzten Sende- und Empfangsantennen jeweils zumindest näherungsweise dieselbe Strahlcharakteristik haben, wobei die Strahlcharakteristik dieser Sendeantennen unterschiedlich zur Strahlcharakteristik dieser Empfangsantennen sein kann, - bezüglich einer Raumrichtung R die Position der relativen Phasenzentren dieser Kombinationen aus Sende- und Empfangsantennen ...

Phased null radar

A method for reducing the interference between a source transmitting pulses and equipments having nominal bandwidths which are outside the nominal bandwidth of the transmitted pulses, but which respond to sideband energy of the pulses. Phase perturbations are applied to the edges of the pulses produced by the source, to thereby tend to null the sideband energy lying in the nominal bandwidth of the equipments occupying the adjacent nominal bandwidths.

Method for modulating a microwave frequency wave, transmission system carrying out this method, and radar comprising a system of this type

A wave transmitted by an antenna made up of an array of radiating elements, two pulse waves are transmitted, each modulated by a phase shift law known as modulation phase shift, the phase shifts being in opposition, a first wave being transmitted by a sub-array of radiating elements referred to as odd and the second wave being transmitted by a second sub-array of radiating elements referred to as even, the two sub-arrays being interleaved, the transmitted wave being the combination of the first wave and the second wave.

UMGEBUNGSSENSOR MIT SIGNALIDENTIFIZIERUNG

Die vorliegende Erfindung betrifft ein Verfahren zum Verifizieren eines Ursprungs eines elektromagnetischen Empfangssignals (24), das an einer Empfangseinheit (22) für elektromagnetische Strahlung einer elektromagnetischen Sensorvorrichtung (12) eines Fahrzeugs (10) empfangen wird, mit den Schritten zum Erzeugen eines elektromagnetischen Sendesignals (16) unter Verwendung der elektromagnetischen Sensorvorrichtung (12) mit einer hinzugefügten Codierung des elektromagnetischen Sendesignals (16) unter Verwendung eines Sendecodeworts (20), Emittieren des elektromagnetischen Sendesignals (16) mit dem hinzugefügten Sendecodewort ( 20), Empfangen eines elektromagnetischen Empfangssignals (24) in Antwort auf das emittierte elektromagnetische Sendesignal (16), Extrahieren eines Empfangscodeworts (28) aus dem elektromagnetischen Empfangssignal (24) und Vergleichen des Sendecodeworts (20) mit dem Empfangscodewort (28). Die vorliegende Erfindung betrifft außerdem eine elektromagnetische Sensorvorrichtung ...

Radar Unit, Integrated Circuit and Methods for Detecting and Mitigating Mutual Interference

A radar unit (400) for detecting an existence of interference is described that includes: a millimetre wave (mmVV) transceiver (Tx/Rx) circuit configured to radiate a transmit radar signal and receive an echo signal thereof; a mixed analog and baseband circuit operably coupled to the mmW Tx/Rx circuit; and a signal processor circuit (452) operably coupled to the mixed analog and baseband circuit. An interference detection unit (448) is operably coupled to the mmW Tx/Rx circuit and configured to: monitor a whole or a portion of a radar frequency band supported by the radar unit and identify, from a received interference signal, an arrival direction of the identified interference and a level of interference and output an interference detected signal; and wherein the signal processor circuit (452) is configured to analyse the interference detected signal and quantify a response to the detection of an arrival direction and a level of received interference.

SPATIAL-BLOCK CODE DIVISION MULTIPLEXING (CDM) FOR MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) WAVEFORMS

Techniques and systems are described for Spatial-Block Code Division Multiplexing (CDM) for MIMO waveforms. A radar system includes multiple transmitters, receivers, and phase shifters. Electromagnetic (EM) signals are transmitted and received in a Spatial-Block CDM scheme. Each spatial block has multiple slots outnumbering the channels. In addition, each slot corresponds to a specific code of phase shifts applied across the channels by the phase shifters during that slot. Fast-Fourier Transformations are applied to reflections of the EM signals to generate complex observations at each of the channels during each slot. Based on the observations, whether a Doppler phase shift exists between two slots can be determined based in part on whether the phase shift has one or multiple possible values. The techniques allow velocities to be resolved, despite a mixed-Doppler interval detected. Analog beamforming is supported; slots can be directed at particular angles to change gain in a field of view.

INTERFERENZUNTERDRÜCKUNG BEI EINEM FMCW-RADAR

Radarsystem, bei dem ein Sendesignal eines FMCW-Radarsensors (10) eine Folge von Frequenzmodulationsrampen (30) umfasst und gemäß einer ersten Codefolge (Cm) phasenmoduliert wird, die orthogonal ist zu einer jeweils anderen Codefolge (Cq), gemäß welcher ein zeitlich synchronisiertes Sendesignal eines anderen FMCW-Radarsensors (10') phasenmoduliert wird, die Radarechos mit einer mit der ersten Codefolge (Cm) korrelierenden Codefolge (Cm; fm) phasendemoduliert werden, und ein Abstand (d) und/oder eine Relativgeschwindigkeit (v) wenigstens eines georteten Objektes (44) bestimmt wird basierend auf einem Frequenzspektrum einer Fourieranalyse (32, 38) in einer ersten Dimension jeweils über Abtastwerte eines Radarechos einer Frequenzmodulationsrampe (30) und in einer zweiten Dimension über die phasendemodulierte Folge der Radarechos der Frequenzmodulationsrampen (30) des Sendesignals des Radarsensors (10); und Radarsystem für eine Fahrzeugflotte, bei dem in einem FMCW-Radarsensor (10) zur Phasenmodulation ...

MIMO-RADAR-VORRICHTUNGEN UND MIMO-RADAR-VERFAHREN

Die vorliegende Offenbarung bezieht sich auf ein hybrides MIMO-Radarkonzept. Über eine erste Teilmenge einer Mehrzahl von Sendekanälen und während eines ersten Zeitintervalls werden erste FMCW-Radarsignale gleichzeitig mit unterschiedlichen Phasenversätzen unter unterschiedlichen Sendekanälen der ersten Teilmenge gemäß einem ersten vordefinierten Codemultiplexschema gesendet. Über eine zweite Teilmenge der Sendekanäle und während eines zweiten Zeitintervalls, das dem ersten Zeitintervall folgt, werden zweite FMCW-Radarsignale gleichzeitig mit unterschiedlichen Phasenversätzen unter unterschiedlichen Sendekanälen der zweiten Teilmenge gemäß einem zweiten vordefinierten Codemultiplex-Schema gesendet.

Radar system

A radar system includes radars and a controller. The controller controls waveform patterns of the radars. As a signal processing unit of each of the radars receives an instruction from the controller, the signal processing unit selects a frequency modulation pattern of a VCO between an FM-CW mode and a CW mode stored in a waveform memory to perform mode switching, and then outputs a radio wave from a transmission antenna. Then, the controller instructs each signal processing unit for a frequency modulation pattern of each radar or an output timing of each pattern so that a time, at which continuous wave signals output from the radars have the same frequency, is not continuous.

RADAR DEVICE

POWER CONTROL FOR IMPROVED NEAR-FAR PERFORMANCE OF RADAR SYSTEMS

A radar system includes a transmitter, a receiver, and a processor. The transmitter transmits continuous wave radio signals. The receiver receives radio signals that includes the transmitted radio signal reflected from targets in an environment. The targets include a first target and a second target. The first target is closer than a first threshold distance from the vehicle, and the second target is farther than the first threshold distance from the vehicle. A processor is configured to process the received radio signals. The processor is configured to selectively process the received radio signals to detect the second target. The processor selectably adjusts operational parameters of at least one of the transmitter and the receiver to discriminate between the first target and the second target.

Radar system for use in driver assisting system for detecting surrounding area of motor vehicle, has antenna for receiving of signals, where glowing objects are varied by signals and not verified by interference rays from cycle to cycle

The system has transmission antenna (1.1) and receiving antenna (1.2) for emission and receiving of transmission signals, respectively. A parameter for controlling the transmission-and receiving antennas and/or for temporal course of processing of received signals is varied from a cycle to cycle such that glowing objects are varied by receiving signals of interference rays in a radar frequency range or in a range, in which a low frequency portion of an evaluation electronics is operated. The objects are not verified by interference rays-or coupling from cycle to cycle. An independent claim is also included for a radar method for detecting surrounding area of the motor vehicle.

Radarsystem

Radarsystem (1), angebracht an einer mobilen Einheit (101), das angepasst ist, ein umliegendes Hindernis unter Verwendung von zumindest zwei Radaren zu erfassen, mit: einem ersten Radar (11), das angepasst ist, eine elektromagnetische Welle mit einem Signalverlauf gemäß einer von einer CW-Betriebsart (4) und einer FM-CW-Betriebsart (3) zu senden; einem zweiten Radar (12), das angepasst ist, eine elektromagnetische Welle mit einem Signalverlauf gemäß einer von der CW-Betriebsart (4) und der FM-CW-Betriebsart (3) zu senden; und einer Steuereinrichtung (9), die angepasst ist, das erste Radar und das zweite Radar zu steuern, wobei das erste Radar (11) und das zweite Radar (12) angepasst sind, jeweils eine elektromagnetische Welle durch alternierendes Umschalten zwischen einem ersten Signalverlauf gemäß der CW-Betriebsart (4) und einem zweiten Signalverlauf gemäß der FM-CW-Betriebsart (3) zu senden, und wobei die Steuereinrichtung (9) angepasst ist, das erste Radar (11) und das zweite Radar ...

MULTI-RADAR COEXISTENCE USING PHASE-CODED FREQUENCY MODULATED CONTINUOUS WAVE WAVEFORMS

MULTI-SENSOR BASED USER INTERFACE

An apparatus and method for gesture detection and recognition. The apparatus includes a processing element, a radar sensor, a depth sensor, and an optical sensor. The radar sensor, the depth sensor, and the optical sensor are coupled to the processing element, and the radar sensor, the depth sensor, and the optical sensor are configured for short range gesture detection and recognition. The processing element is further configured to detect and recognize a hand gesture based on data acquired with the radar sensor, the depth sensor, and the optical sensor.

Radar system and transmission apparatus therefor

The present disclosure relates to a radar system and a transmission apparatus therefor, including a signal generator for generating a first signal; a phase adjuster configured to include a plurality of input ports and at least one output port, to generate a second signal by adjusting the phase of the first signal according to an input port through which the first signal is transmitted among the plurality of input ports, and to output the generated second signal to an antenna unit; and a port selector configured to select at least one of the plurality of input ports of the phase adjuster according to an identification code and to transmit the first signal through the selected input port so that a transmission signal radiated through the antenna unit is phase inverted or formed in a pattern corresponding to the identification code, so that interference by the other radar system can be minimized, and the accuracy, reliability and frequency efficiency of the radar system can be improved.

RADAR SYSTEM

A radar system includes radars and a controller. The controller controls waveform patterns of the radars. As a signal processing unit of each of the radars receives an instruction from the controller, the signal processing unit selects a frequency modulation pattern of a VCO between an FM-CW mode and a CW mode stored in a waveform memory to perform mode switching, and then outputs a radio wave from a transmission antenna. Then, the controller instructs each signal processing unit for a frequency modulation pattern of each radar or an output timing of each pattern so that a time, at which continuous wave signals output from the radars have the same frequency, is not continuous.

MULTI-SENSOR BASED USER INTERFACE

An apparatus and method for gesture detection and recognition. The apparatus includes a processing element, a radar sensor, a depth sensor, and an optical sensor. The radar sensor, the depth sensor, and the optical sensor are coupled to the processing element, and the radar sensor, the depth sensor, and the optical sensor are configured for short range gesture detection and recognition. The processing element is further configured to detect and recognize a hand gesture based on data acquired with the radar sensor, the depth sensor, and the optical sensor.

Radar sensor having a two-dimensional beam scan and L-, U- or T-shaped structure for mounting in the region of the front radiator of an automobile

Apparatuses and methods for two-dimensional beam scanning for determining the position of an object in three-dimensional space are provided. An apparatus comprises a multiplicity of transmitters and receivers, which are arranged orthogonal to one another in an L-, U- or T-shaped structure. In one apparatus, the transmission signals are frequency and phase modulated in combination; and in another apparatus a single frequency carrier signal is subject to binary phase modulation. Here, this is a high-frequency encoding with a great code length, which is generated according to the pseudo-random number principle. The received signals, which include information from all transmitters, are decoded and consequently split into sub-signals, which can be assigned to a two-dimensional virtual array. According to the method of digital beamforming, the individual signals of the virtual antenna elements are formed into a plurality of highly focused beams in the horizontal and vertical direction.

Software defined automotive radar systems

A radar system processes signals in a flexible, adaptive manner to determine range, Doppler (velocity) and angle of objects in an environment. The radar system includes transmitters configured to transmit radio signals, receivers configured to receive radar signals, and a control unit. The received radio signals include transmitted radio signals transmitted by the transmitters and reflected from objects in an environment. The control unit adaptively controls the transmitters and the receivers based on a selected operating mode for the radar system. The selected operating mode meets a desired operational objective defined by current environmental conditions. The control unit is configured to control the receivers to produce and process data according to the selected operating mode.

METHODS FOR RADAR COEXISTENCE

A method and apparatus for selecting frequency modulated continuous wave waveform parameters for multiple radar coexistence by a user equipment is described. The user equipment may transmit a radar waveform consisting of a number of chirps, with each chirp having a same duration. The user equipment may vary waveform parameters of the radar waveform for at least a subset of the number of chirps, where the waveform parameters may be chosen from a codebook comprising at least one codeword of parameters. Reflected radar waveforms are received and processed where the processing includes applying a fast time discrete Fourier transform to reflected radar waveforms to produce a one dimension peak in a time delay dimension for each reflected waveform; and applying a slow time discrete Fourier transform to the reflected radar waveforms, where peaks for the reflected waveforms are added.

MULTI-RADAR COEXISTENCE USING PHASE-CODED FREQUENCY MODULATED CONTINUOUS WAVE WAVEFORMS

Methods, systems, and devices for radar signaling are described. In some systems, devices may implement techniques to support coexistence for multiple radar sources using a phase-coded frequency modulated continuous wave waveform. A user equipment (e.g., a vehicle) may select a codeword (e.g., a pattern of parameters) from a codebook and may derive phase code information and waveform shape parameters from values specified in the codeword. The user equipment may apply phase modulation to at least one chirp of a waveform using the indicated phase code. In some cases, the phase-coded frequency modulated continuous wave waveform may resemble nested Zadoff-Chu sequences, where the waveform resembles a Zadoff-Chu sequence and the phase code resembles another Zadoff-Chu sequence. The phase code may support mitigating interference between radar waveforms that use the same slope and frequency offset parameters for chirps overlapping in time.

Software defined automotive radar systems

A radar system processes signals in a flexible, adaptive manner to determine range, Doppler (velocity) and angle of objects in an environment. The radar system processes the received signal to achieve different objectives depending on one or more of a selected range resolution, a selected velocity resolution, and a selected angle of arrival resolution, as defined by memory requirements and processing requirements. The system allows improved resolution of range, Doppler and/or angle depending on the memory requirements and processing requirements.

Multi-sensor based user interface

An apparatus and method for gesture detection and recognition. The apparatus includes a processing element, a radar sensor, a depth sensor, and an optical sensor. The radar sensor, the depth sensor, and the optical sensor are coupled to the processing element, and the radar sensor, the depth sensor, and the optical sensor are configured for short range gesture detection and recognition. The processing element is further configured to detect and recognize a hand gesture based on data acquired with the radar sensor, the depth sensor, and the optical sensor.

RADAR SYSTEM THAT USES VELOCITY LABELED MULTIPLEXING FOR GENERATING DETECTIONS

A fast ramp frequency modulated continuous wave (FMCW) radar system (100) is described herein, where the fast ramp FMCW radar system is configured to employ velocity labeled multiplexing (VLM) in connection with generating detections for objects in a scene. Transmitters (110, 112) in the radar system are assigned different velocity labels that corresponds to different phase rates of change of consecutive chirps in signals emitted by the transmitters. Approaches for generating detections based upon echo signals that correspond to the emitted signals are also described herein.

USING A SIDE-COMMUNICATION CHANNEL FOR EXCHANGING RADAR INFORMATION TO IMPROVE MULTI-RADAR COEXISTENCE

Method and apparatus for cognitive nonlinear radar

A method and apparatus for cognitive non-linear radar processing comprising identifying one or more frequency bands of interest, passively scanning, using a non-linear radar (NR), the one or more frequency bands of interest to determine whether interference signals are occupying the one or more bands, transmitting radar waveforms and receiving radar waveform responses at one or more frequency bands determined to be free of interference, determining a likelihood of a target being present or not based on whether the received waveform responses match stored waveform responses for non-linear targets, and modifying waveform parameters of the transmitted radar waveform when the received waveform responses match the stored waveform responses, so as to transmit a modified radar waveform.

Phase-modulated continuous wave radar system (with prbs codes)

A phase modulated continuous wave radar system comprising a radar control system utilizing a Pseudo Random Bit Sequence (PRBS) as a long modulation code with simultaneous autocorrelation and cross-correlation interference resistance. the transmitter is co-sited with the receiver, the receiver can be given prior knowledge of the specific transmitted code that it is correlating to. This prior knowledge, which is not accessible in general to bi-static systems such as GPS and cell phone technology, allows for increased randomization of cyclic code structures in monostatic radar systems.

RADAR APPARATUS

The radar apparatus includes: a plurality of transmission antennas that transmit a transmission signal; and a transmission circuit that applies a phase rotation amount corresponding to a Doppler shift amount and a code sequence to the transmission signal to perform multiplexing transmission of the transmission signal from the plurality of transmission antennas. A transmission delay of the transmission signal is set for a transmission period of the transmission signal. Each of the plurality of transmission antennas is associated with a combination of the Doppler shift amount and the code sequence such that at least one of the Doppler shift amount and the code sequence is different between a plurality of the combinations. A number of multiplexing by the code sequence corresponding to a first Doppler shift amount is different from a number of multiplexing by the code sequence corresponding to a second Doppler shift amount. 1. A radar apparatus , comprising:a plurality of transmission antennas that transmit a transmission signal; anda transmission circuit that applies a phase rotation amount corresponding to a Doppler shift amount and a code sequence to the transmission signal to perform multiplexing transmission of the transmission signal from the plurality of transmission antennas, whereina transmission delay of the transmission signal is set for a transmission period of the transmission signal,each of the plurality of transmission antennas is associated with each of a plurality of combinations of the Doppler shift amount and the code sequence,each of the plurality of combinations is different at least one of the Doppler shift amount and the code sequence, anda number of multiplexing by the code sequence corresponding to a first Doppler shift amount of a plurality of the Doppler shift amounts is different from a number of multiplexing by the code sequence corresponding to a second Doppler shift amount of the plurality of Doppler shift amounts.2. The radar apparatus ...

CENTRALIZED OBJECT DETECTION SENSOR NETWORK SYSTEM

A centralized object detection sensor network system comprises a central unit configured to generate one or more probing signals for detecting one or more objects in an environment, and one or more transponders configured to receive the one or more probing signals and convert them into free space waves for detecting the one or more objects in the environment. The one or more transponders are communicatively coupled to the central unit through one or more communication links. 1. An object detection system for detecting one or more objects in an environment , wherein the object detection system is configured to communicate with one or more transponders to detect the one or more objects , wherein the one or more transponders are physically separate from the object detection system while being communicatively coupled thereto through one or more communication links , the object detection system comprising:a signal processing unit configured to generate one or more baseband signals;a transmitter unit configured to receive the one or more baseband signals from the signal processing unit, generate one or more probing signals using the one or more baseband signals, and transmit the one or more probing signals to the one or more transponders; anda receiver unit configured to receive one or more echo signals associated with the one or more probing signals from the one or more transponders and generate one or more reflected baseband signals from the one or more echo signals,wherein the signal processing unit is configured to detect the one or more objects based at least in part on the one or more reflected baseband signals and the one or more baseband signals.2. The object detection system of claim 1 , further comprising a router configured to receive the one or more probing signals and couple them to the one or more communication links claim 1 , and to couple the one or more echo signals claim 1 , received from the one or more communication links claim 1 , to the object ...

Multicode transmitter

Systems, methods, and apparatus for transmitting and receiving signals are disclosed. In one or more embodiments, the disclosed method involves splitting a signal into low power portions. The method further involves coding the low power portions to produce coded low power portions, where the coding comprises convolving each low power portion with a respective different code. Also, the method involves summing the coded low power portions to produce a resultant coded signal. In addition, the method involves transmitting the resultant coded signal towards a target object. Additionally, the method involves receiving a reflected resultant coded signal, where the resultant coded signal reflects off the target object to produce the reflected resultant coded signal. Also, the method involves decoding the reflected resultant coded signal to produce a decoded signal. Further, the method involves correlating the decoded signal to produce a complete received signal.

Adaptive transmission and interference cancellation for mimo radar

A radar sensing system for a vehicle includes a transmit pipeline, a receive pipeline, and a memory module. The transmit pipeline includes transmitters for transmitting radio signals. The receive pipeline includes receivers for receiving radio signals that include the transmitted radio signals transmitted by the transmitters and reflected from objects in an environment. The memory module is configured to store interference estimates for each receiver of the plurality of receivers that are estimates of interfering radio signals received by each of the receivers that are transmitted by each respective transmitter of the plurality of transmitters. Each receiver of the plurality of receivers is configured to mitigate interference that is due to interfering radio signals transmitted by the plurality of transmitters, as defined by the stored interference estimates of the plurality of transmitters for each particular receiver.

SYSTEM AND METHOD FOR RADAR INTERFERENCE MITIGATION

A system for radar interference mitigation, preferably including one or more transmitter arrays, receiver arrays, and/or signal processors, and optionally including one or more velocity sensing modules. A method for radar interference mitigation, preferably including transmitting a set of probe signals, receiving a set of reflected probe signals, and/or evaluating interference, and optionally including decoding the set of received probe signals and/or compensating for interference. 1. A method for radar interference mitigation , comprising: the first set of radar probe signals defines a first timing sequence, the first timing sequence defining a first set of probe signal durations and inter-probe delays;', 'the first set of radar probe signals are reflected by a set of targets in an environment surrounding the radar array to generate a first set of reflected signals;, 'at a radar array, during a first time interval, transmitting a first set of radar probe signals, wherein the first set of reflected signals; and', 'a first interference signal;, 'at the radar array, during the first time interval, sampling a first set of radio frequency (RF) signals from the environment, the first set of RF signals comprisingbased on the first set of radar probe signals and the first set of RF signals, generating a first intermediate frequency (IF) signal;detecting a set of crossing interference events within the first IF signal;based on the set of crossing interference events, determining a second timing sequence different from the first timing sequence, the second timing sequence defining a second set of probe signal durations and inter-probe delays, wherein at least one probe signal duration of the second set differs from a corresponding probe signal duration of the first set; the second set of radar probe signals defines the second timing sequence; and', 'the second set of radar probe signals are reflected by the set of targets to generate a second set of reflected signals; and, ' ...

Radar system operating method and radar system having improved range resolution by mutually delayed orthogonal codes

A method of operating a modulated continuous-wave radar system at least includes steps of transmitting, with a modulation frequency, a plurality of n modulated continuous radar waves that represent mutually orthogonal codes towards a scene with a potential object to be detected, wherein the transmitted modulated continuous radar waves of the plurality of modulated continuous radar waves are consecutively transmitted with a constant time lag given by one nth of a period of the modulation frequency; digitally converting a plurality of reflected and received radar signals with a sampling rate that is equal to the modulation frequency; decoding individual range information for each received radar signal; and determining a range between the radar system and the object on the basis of the decoded individual range information.

Method and apparatus for determinig object distance using radar

레이더 및 오브젝트 간의 거리를 결정하기 위한 방법 및 장치가 제공된다. 오브젝트의 거리를 결정하기 위해, 수신된 반사 신호 및 하나 이상의 보조 코드 시퀀스들로 구성된 인코드 시퀀스 세트에 대한 대상 상관 벡터를 생성하고, 참조 상관 벡터들에 대해 미리 생성된 룩업 테이블 및 대상 상관 벡터에 기초하여 오브젝트의 거리를 결정한다. A method and apparatus are provided for determining a distance between a radar and an object. To determine the distance of the object, a target correlation vector is generated for a set of encoded sequences consisting of the received reflected signal and one or more auxiliary code sequences, and the target correlation vector and a lookup table generated in advance for the reference correlation vectors Determine the distance of the object based on it.

System for controlling traffic management at the intersection

FIELD: controlling. SUBSTANCE: invention relates to the control of traffic management at the intersection of multiple roads. The system for controlling traffic management at the intersection (1) of two roads (2) has a first radar sensor (18), a second radar sensor (20), and an electronic data processing apparatus. The first radar sensor (18) has a first registration area (22) for registering traffic participants on the first road (2). The second radar sensor (20) has a second registration area (24) for registering traffic participants on the second road (2). The first registration area (22) and the second registration area (24) overlap in a single overlap area (26). The electronic data processing apparatus is intended for partially combining the sensor data (34) of the first radar sensor and the sensor data (36) of the second radar sensor, obtaining combined signals (44), and controlling traffic management at the intersection (1) at least also depending on the combined signals (44). EFFECT: system for controlling traffic management at the intersection is improved. 13 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 765 086 C1 (51) МПК G08G 1/08 (2006.01) G08G 1/015 (2006.01) G08G 1/01 (2006.01) G01S 13/87 (2006.01) G08G 1/052 (2006.01) G01S 13/91 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G01S 13/584 (2021.05); G01S 13/87 (2021.05); G01S 13/91 (2021.05); G08G 1/0116 (2021.05); G08G 1/0133 (2021.05); G08G 1/0145 (2021.05); G08G 1/015 (2021.05); G08G 1/052 (2021.05); G08G 1/08 (2021.05) (21)(22) Заявка: 2021103878, 11.07.2019 11.07.2019 (73) Патентообладатель(и): С.М.С., СМАРТ МАЙКРОВЭЙВ СЕНСОРЗ ГМБХ (DE) Дата регистрации: 25.01.2022 26.07.2018 DE 10 2018 118 150.7 (45) Опубликовано: 25.01.2022 Бюл. № 3 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 26.02.2021 (86) Заявка PCT: 2 7 6 5 0 8 6 (56) Список документов, цитированных в отчете о поиске: US 2007096943 A1, 03.05.2007. US ...

Radar system having arrangements and method for decoupling transmission and reception signals and suppression of interference radiation

The invention relates to a radar system for surveying the surroundings, designed such that one or more sequences of identical or similar individual signals, optionally packed one within the other, are emitted per transmitting antenna in one measurement cycle, particularly for determining the relative velocity of objects and for increasing the detection sensitivity, wherein the average time interval of said individual signals is greater than the running time of received signals corresponding to the maximum distance of interest. Receiving means are provided in which the signals received by reflection from objects are mixed with high-frequency signals, whereby low-frequency received signals are created and represent sequences of individual signals and the phase offsets thereof are varied over sequential low-frequency individual received signals, so that the phase offset of the individual transmitted signals and/or the high-frequency signals used for mixing and/or the low-frequency individual received signals themselves are varied.

Radar sensor with frontal and lateral emission

다수의 송신 안테나를 사용하여 송신 신호를 송출하는 송신장치, 다수의 수신 안테나를 사용하여 대상에서 반사되는 송신 신호를 수신하는 수신 장치, 및 수신한 신호를 처리하는 신호처리장치가 장착된 주변 인식용 레이더센서에 있어서, 평평한 보드의 앞면 또는 뒷면에 하나 이상의 개별 유닛(이하 기본 다이폴)이 구비되는 다수의 송신 안테나 및 다수의 수신 안테나가 존재하고, 상기 평평한 보드에 배치된 하나 이상의 기본 다이폴로서 상기 다이폴의 광선 원뿔 중심이 상기 레이더센서의 외부에서 수직에 대해 45°이하로 기울어져 상기 보드에 위치하는 기본 다이폴이 구비된 적어도 하나의 송신 안테나 및 하나의 수신 안테나가 존재하고, 그리고 상기 평평한 보드에 배치된 하나 이상의 기본 다이폴로서 상기 다이폴의 광선 원뿔 중심이 상기 레이더센서의 외부에서 수직에 대해 45° 이상으로 기울어져 상기 보드에 위치하는 기본 다이폴이 구비된 적어도 하나의 송신 안테나 및 하나의 수신 안테나가 존재하는 것을 특징으로 한다. A transmission apparatus for transmitting a transmission signal using a plurality of transmission antennas, a reception apparatus for receiving a transmission signal reflected by a target using a plurality of reception antennas, and a peripheral recognition apparatus equipped with a signal processing apparatus for processing the received signal There is provided a radar sensor including a plurality of transmission antennas and a plurality of reception antennas each having at least one individual unit (hereinafter, referred to as a basic dipole) on a front surface or a rear surface of a flat board, and, as one or more basic dipoles disposed on the flat board, There is at least one transmit antenna and one receive antenna with a basic dipole located at the board, with the center of the cone of the light beam being tilted at an angle of 45 degrees or less with respect to the vertical from the outside of the radar sensor, Wherein the center of the light beam cone of the dipole Becomes more tilted over 45 ° to the vertical outside of the sensor is characterized in that the primary dipole is at least one transmission antenna and one receive antenna having present which is located in the board.

Multicode transmitter

Systems, methods, and apparatus for transmitting and receiving signals are disclosed. In one or more embodiments, the disclosed method involves splitting a signal into low power portions. The method further involves coding the low power portions to produce coded low power portions, where the coding comprises convolving each low power portion with a respective different code. Also, the method involves summing the coded low power portions to produce a resultant coded signal. In addition, the method involves transmitting the resultant coded signal towards a target object. Additionally, the method involves receiving a reflected resultant coded signal, where the resultant coded signal reflects off the target object to produce the reflected resultant coded signal. Also, the method involves decoding the reflected resultant coded signal to produce a decoded signal. Further, the method involves correlating the decoded signal to produce a complete received signal.

Radar device

In order to maintain low range sidelobe characteristics in signals of a reflected wave from a target even when the target moves, and to reduce interference among a plurality of sector radars, a first sector radar generates signals which are obtained by modulating a first code sequence at a first transmission cycle, obtained by modulating a second code sequence at a second transmission cycle, obtained by modulating the first code sequence at a third transmission cycle, and obtained by modulating the second code sequence at a fourth transmission cycle respectively. A second sector radar generates signals which are obtained by modulating the second code sequence at the first transmission cycle, obtained by modulating, at the second transmission cycle, a third code sequence having the opposite polarity to the first code sequence, obtained by modulating, at the third transmission cycle, a fourth code sequence having the opposite polarity to the second code sequence, and obtained by modulating the first code sequence at the fourth transmission cycle respectively. The first and second sector radars respectively transmit the generated signals from first and second transmission antennae.

Interference cancellation in an fmcw radar

雷达系统，在该雷达系统中，FMCW雷达传感器(10)的发射信号包括频率调制斜坡(30)的序列并且根据第一码序列(C m )被相位调制，所述第一码序列与分别其他的码序列(C q )正交，根据所述其他的码序列对其他FMCW雷达传感器(10’)的在时间上同步的发射信号相位调制，所述雷达回波用与所述第一码序列(C m )相关联的码序列(C m ，f m )相位解调，并且，基于傅里叶分析(32，38)的频谱，在第一维度上分别通过频率调制斜坡(30)的雷达回波的采样值和在第二维度上通过所述雷达传感器(10)的发射信号的频率调制斜坡(30)的雷达回波的经相位解调的序列，确定至少一个所定位的对象(44)的间距(d)和/或相对速度(v)；和用于车队的雷达系统，在该雷达系统中，在FMCW雷达传感器(10)中使用一码组(C m1 ，C m2 )用于相位调制和相位解调，所述码组与在其他车辆的雷达传感器(10”)中所使用的码组(C q1 ，C q2 )满足码组正交条件。

Method and device for determining the phase error of a phase rotator

There is described a method of determining phase error caused by impairments in a phase rotator, said impairments including leakage in mixers and/or multipliers of the phase rotator, gain/amplitude imbalance and a known phase imbalance between an I path and a Q path in the phase rotator, the phase rotator having an input for receiving a reference phase value, a local oscillator and circuitry configured to provide an output signal with a phase corresponding to the reference phase value. The method comprises (a) forcing the Q path of the phase rotator to zero and obtaining a first sequence of successive measurement values indicative of a power of the phase rotator output signal, each successive measurement value in the first sequence corresponding to one of a plurality of successive reference phase values, (b) forcing the I path of the phase rotator to zero and obtaining a second sequence of successive measurement values indicative of the power of the phase rotator output signal, each successive measurement value in the second sequence corresponding to one of the plurality of successive reference phase values, (c) forming a sequence of successive measurement value pairs, each measurement value pair comprising one measurement value from the first sequence of successive measurement values and one measurement value from the second sequence of successive measurement values, wherein the first sequence of successive measurement values is shifted relative to the second sequence of successive measurement values by an amount corresponding to the known phase imbalance, (d) calculating an actual phase value for each of the successive measurement value pairs, and (e) determining the phase error by comparing the actual phase values with the corresponding reference phase values. Furthermore, a corresponding device and a radar system comprising such a device arc described.

Method for modulating a microwave frequency wave, transmission system using said method and radar comprising such a system

Radar system with elevation measuring capability

CODING METHOD OF A SIGNAL, RECEIVER DEVICE AND ASSOCIATED TRANSMISSION SYSTEM

Method for determining at least one piece of object information about at least one object sensed by means of a radar system, in particular of a vehicle, radar system, and driver assistance system

The invention relates to a method for determining at least one piece of object information about at least one object (18) sensed by means of a radar system (12), in particular of a vehicle (10), a radar system (12), and a driver assistance system (20) having a radar system (12). In the method, transmission signals (32a, 32b) are transmitted into a monitoring region (14) of the radar system (12) by means of at least one transmitter (26a, 26b). Echoes of the transmission signals (32a, 32b) reflected at the at least one object (18) are received as reception signals (34a, 34b) by means of at least one receiver (30a, 30b) and if necessary are brought into a form that can be used by an electronic control and/or evaluation device (28). The reception signals (34a, 34b) are subject to at least one two-dimensional discrete Fourier transform. At least one time signal is determined from the result of the at least one two-dimensional discrete Fourier transform. At least one piece of object information is determined from said at least one time signal. On the transmitter side, at least one first transmission signal (32a) and at least one second transmission signal (32b) are produced from a frequency-modulated continuous-wave signal in such a way that said transmission signals reach the at least one object (18) with different amplitudes and can be reflected by the at least one object. The at least one second transmission signal (32b) is coded by means of a phase modulation with respect to the at least one first transmission signal (32a) in such a way that an at least temporary signals orthogonality between the at least one first transmission signal (32a) and the at least one second transmission signal (32b) is achieved. The at least one first transmission signal (32a) and the at least one second transmission signal (32b) are simultaneously transmitted into the monitoring region (14) of the radar system (12) by means of at least one first transmitter (26a) and by means of at least ...

MIMO radar apparatus and MIMO radar method

本发明涉及MIMO雷达装置和MIMO雷达方法，具体涉及一种混合MIMO雷达概念。例如，经由多个发射通道的第一子集并且在第一时间间隔期间并发地发射第一FMCW雷达信号，第一FMCW雷达信号根据第一预定码分复用方案在第一子集的不同发射通道之中具有不同的相位偏移。经由发射通道的第二子集并且在第一时间间隔之后的第二时间间隔期间并发地发射第二FMCW雷达信号，第二FMCW雷达信号根据第二预定码分复用方案在第二子集的不同发射通道之中具有不同的相位偏移。

SIGNAL PROCESSING DEVICE AND RADAR DEVICE

Eine Signalverarbeitungseinrichtung (2) weist auf: eine Amplitudenreduzierungseinheit (22), um, wenn ein Phasenverschiebungssteuersignal, angebend eine Phasenverschiebung einer Übertragungswelle, deren Frequenz moduliert ist, unter Amplituden eines Schwebungssignals, aufweisend eine Differenzfrequenz zwischen der Übertragungswelle und einer Empfangswelle, eine Amplitude des Schwebungssignals zu reduzieren, zu einem Zeitpunkt, zu dem eine Phase der Übertragungswelle gemäß dem Phasenverschiebungssteuersignal verschoben wird; und eine Signalumwandlungseinheit (25), um das Schwebungssignal, dessen Amplitude zu dem Zeitpunkt, zu dem die Phase der Übertragungswelle durch die Amplitudenreduzierungseinheit (22) verschoben wird, in ein Signal in einer Frequenzdomäne umzuwandeln. A signal processing device (2) comprises: an amplitude reducing unit (22) to, when a phase shift control signal indicating a phase shift of a transmission wave whose frequency is modulated, among amplitudes of a beat signal having a difference frequency between the transmission wave and a reception wave, an amplitude of the beat signal to reduce at a timing when a phase of the transmission wave is shifted according to the phase shift control signal; and a signal converting unit (25) for converting the beat signal whose amplitude at the time the phase of the transmission wave is shifted by the amplitude reducing unit (22) into a signal in a frequency domain.

Method for a mimo radar for unambiguously determining targets, and a radar

Verfahren für ein MIMO-Radar zur eindeutigen Ermittlung von Zielen, wobei das Radar mehrere Sendeantennen und mehrere Empfangsantennen aufweist, • wobei jede Sendeantenne mehrere zeitlich aufeinanderfolgende Frequenzrampen (54, 56) aussendet, • wobei die Startphasen (φ1, φ2) aufeinanderfolgender Frequenzrampen der Sendeantennen gemäß einer periodischen Kodierung variiert werden, • wobei die Empfangsantennen die an einem Ziel reflektierten Frequenzrampen (54, 56) als Empfangssignale detektieren, • wobei die Empfangssignale verarbeitet werden, um ein Spektrum (40) bereitzustellen, • wobei die Energie eines detektierten Ziels innerhalb des Spektrums (40) aufgrund der Kodierung auf mehrere Positionen (42, 44, 46, 48) verteilt ist, • wobei die Kodierung derart gewählt ist, dass die Energieverteilung, bei der jede Position (42, 44, 46, 48) einen Energiewert aufweist, über die Positionen (42, 44, 46, 48) eindeutig verteilt ist, • wobei ein Ziel aus dem Spektrum (40) anhand der eindeutigen Energieverteilung ermittelt wird. Zudem wird ein Radar, welches dieses Verfahren verwendet, beschrieben.

Radar system comprising overlapping transmitter and receiver antennae

Orthogonal separation device and orthogonal separation method

An orthogonal separation device of the invention includes a demodulator that performs a demodulation process corresponding to each of a plural number N of antennas for each of a plural number P (=M × N) of pulse waves (R11 to R1M), ..., (RN1 to RNM) which arrives at the plural number N of antennas by transmitting, at the same time, a plural number M of pulse waves having phases φ 1 to φ M set as different arrays of known discrete values and that generates a plural number P of demodulated signals (R' 11 to R' 1M ), ..., (R' N1 to R' NM ), and includes a phase adjuster that adjusts difference among the phases of a plural number P of demodulated signals (R' 11 to R' 1M ), ..., (R' N1 to R' NM ) according to the arrays of known discrete values and generates a plural number P of in-phase signals (r11 to r1M), ..., (rN1 to rNM).

Radar system comprising overlapping transmitter and receiver antennae

The invention relates to a radar system for recording the environment of a motor vehicle, comprising: transmission means for emitting transmission signals using one or more transmitter antennae; receiving means for receiving transmission signals reflected by objects using one or more receiver antennae and signal processing means for processing the received signals. The system is characterised in that: it is equipped with transmitter and receiver antennae that are planar and are situated on a level surface; said transmitter and receiver antennae have at least approximately the same emission characteristics and the emission characteristics of the transmitter antennae can be different from those of the receiver antennae; received signals are acquired from different combinations of the transmitter and receiver antennae; in the signal processing means, the angular position in a spatial direction R is estimated for objects from said received signals, using the fact that the received signals from an individual object have different phase positions in relation to one another depending on the angular position of said object in the spatial direction R; and at least two of said transmitter and receiver antennae overlap with regard to the spatial direction R without being identical, said overlap being obtained by at least one of the following arrangements or configurations of the transmitter and receiver antennae: a) the antennae are offset in relation to one another with regard to the spatial direction S that runs perpendicular to the spatial direction R, in particular the transmitter antennae are positioned above the receiver antennae for a horizontal spatial direction R; b) the transmitter and/or the receiver antenna(e) has or have an oblique arrangement with regard to the spatial direction R; c) the antennae are interleaved with regard to the spatial direction R; d) the use of emitting or receiving elements is common to at least two transmitter or receiver antennae.

Radar System Comprising Overlapping Transmitter and Receiver Antennas

The invention relates to a radar system for recording the environment of a motor vehicle, comprising: transmission means for emitting transmission signals using at least two transmission antennas; receiving means for receiving transmission signals reflected by objects using one or more receiver antennas; and signal processing means for processing the received signals, characterized in that it is equipped with transmitter and receiver antennas that are planar and are situated on a level surface, said transmitter and receiver antennas have at least approximately the same emission characteristic, wherein the emission characteristic of the transmitter antennas can be different to that of the receiver antennas, received signals are acquired from different combinations of the transmitter and receiver antennas, in the signal processing means, the angular position in a spatial direction R is estimated for objects from said received signals, using the fact that the received signals from an individual object have different phase positions in relation to one another depending on the angular position of said object in the spatial direction R, and and at least two of said transmitter and receiver antennas overlap with regard to the spatial direction R without being identical, said overlap being obtained by at least one of the following arrangements or configurations of the transmitter and receiver antennas: a) the antennas are offset in relation to one another with regard to the spatial direction S that runs perpendicular to the spatial direction R, in particular the transmitter antennas are positioned above the receiver antennas for a horizontal spatial direction R; b) the transmitter and/or the receiver antenna(e) has or have an oblique arrangement with regard to the spatial direction R; c) the antennas are interleaved with regard to the spatial direction R; d) the use of emitting or receiving elements is common to at least two transmitter or receiver antennas.

System and method for radar interference mitigation

A system for radar interference mitigation, preferably including one or more transmitter arrays, receiver arrays, and/or signal processors, and optionally including one or more velocity sensing modules. A method for radar interference mitigation, preferably including transmitting a set of probe signals, receiving a set of reflected probe signals, and/or evaluating interference, and optionally including decoding the set of received probe signals and/ or compensating for interference.

Phased null radar

A method for reducing the interference between a source transmitting pulses and equipments having nominal bandwidths which are outside the nominal bandwidth of the transmitted pulses, but which respond to sideband energy of the pulses. Phase perturbations are applied to the edges of the pulses produced by the source, to thereby tend to null the sideband energy lying in the nominal bandwidth of the equipments occupying the adjacent nominal bandwidths.

Vehicle radar system and method for determining a position of at least one object in relation to a vehicle

The invention relates to a vehicle radar system and to a  method for determining a position of at least one object (5) in relation to a vehicle. The vehicle radar system has at least one transmitting device (4), at least three receiving devices (1, 2, 3) and a distance-measuring device. At least two of the receiving devices (1, 3) are arranged spatially separated from one another on a straight line. At least one of the further receiving devices (2) is arranged vertically offset with respect to this straight line.

A method and system for presence detection

The present invention relates to method for presence control in a vehicle (1), using at least a first and second arrangement (3, 4) for transmitting and receiving microwave radiation, the method comprising the following steps for each one of said arrangements (3, 4): actuating a microwave transmitter (13) detecting microwave radiation with a microwave receiver (15); and determining a possible presence in the vehicle (1). The method furthermore comprises: each one of said arrangements transmitting using a certain actuation frequency, different from the other; each microwave receiver (15) detecting both the reflected signals from its own microwave transmitter (13) and the transmitted energy from the other microwave transmitters (13) in said arrangements (3, 4), such that mixing products occur as well as difference frequencies of the mixing products, constituting interference; and adapting the actuation frequencies such that, for each one of said arrangements, said interference appear outside the pass band of a Doppler band pass filter.

360° mimo radar system having multiple radar sensors and phase calibration via over-lapping virtual tx and rx antennas of adjacent radar sensors

The invention describes a radar system consisting of a plurality of subcomponents each individually having all components of a radar device which comprise at least transmitters, receivers, a mixer and a phase locked loop, wherein an individual phase code is generated for each transmitter; and transmitters and receivers of all subcomponents of the radar system together provide a virtual overall arrangement according to the Multiple Input Multiple Output method, wherein at least one virtual sub-arrangement of the overall arrangement, provided by a combination of transmitters of a subcomponent and receivers of a subcomponent, has at least one overlapping column or one overlapping row with another virtual sub-arrangement of the overall arrangement, wherein the at least other virtual sub-arrangement is provided by another combination of transmitters of a subcomponent and receivers of a subcomponent.

Radar system and sending device for the radar system

本公开涉及一种雷达系统以及用于该雷达系统的发送设备，该发送设备包括：信号发生器，其用于生成第一信号；相位调节器，其被配置为包括多个输入端口和至少一个输出端口，通过根据所述多个输入端口当中发送第一信号的输入端口调节第一信号的相位来生成第二信号，并且将所生成的第二信号输出到天线单元；以及端口选择器，其被配置为根据识别代码来选择相位调节器的所述多个输入端口中的至少一个并通过所选择的输入端口来发送第一信号，以使得通过天线单元辐射的发送信号被相位反转或者按照与识别代码对应的图案来形成，以使得其它雷达系统的干扰可最小化，并且雷达系统的精度、可靠性和频率效率可改进。

Combined radar and telemetry system

A combined radar and telemetry system is described. The combined radar and telemetry system includes a processing unit that executes instructions, where the instructions define a radar waveform and a telemetry waveform. The processor outputs a digital baseband signal based upon the instructions, where the digital baseband signal is based upon the radar waveform and the telemetry waveform. A radar and telemetry circuit transmits, simultaneously, a radar signal and telemetry signal based upon the digital baseband signal.

Radar system having arrangements and method for decoupling transmission and reception signals and suppression of interference radiation

检测周围环境的雷达系统，其结构是，尤其为了测定目标的相对速度以及提高每根发射天线在一个测量循环中的探测灵敏度，发射相同或类似单一信号的一个或多个可能相互交错的序列，此时这些单一信号的时间间隔平均大于最大关注距离对应的接收信号传播时间。在设置的接收设备中通过目标反射接收的信号与高频信号混合，由此形成表示单一信号序列的低频接收信号，并通过前后连续的低频单一接收信号改变其相位，方法是：改变单一信号和/或用于混合的高频信号和/或低频单一接收信号本身的相位。

Radar interference mitigation method and apparatus

Radar communication integrated signal sending method, receiving method and equipment

本申请公开了一种雷达通信一体化信号发送方法、接收方法及设备，涉及通信技术领域。该方法包括：根据待发送的通信信息比特，确定第一信号的极化状态；根据所述第一信号的极化状态，发送第一信号；其中，所述第一信号为雷达信号。本申请的方案能够解决现有的雷达通信一体化信号传输无法兼顾雷达检测性能与通信性能的问题。

Interference suppression in FMCW radar

Active receiver distortion suppression in a radar system

A method for operating a radar in a radar system to cancel an external disturbance in a received signal is provided. The method comprises receiving a signal at the receiving antenna, receiving the signal at the control unit, identifying interfering signal, generating a correction signal and feeding the correction signal. The correction signal is arranged to dampen the interfering signal in the frequency span in the received signal. Thereby the external disturbance is reduced.

Successive signal interference mitigation

A radar sensing system for a vehicle includes a transmitter, a receiver, and an interference mitigation processor. The transmitter transmits radio signals. The receiver receives radio signals. The received radio signals include reflected radio signals that are each transmitted radio signals reflected from objects in the environment. The receiver also down-converts and digitizes the received radio signals to produce a baseband sampled stream. The interference mitigation processor produces a second received radio signal that includes reflected radio signals that are transmitted radio signals reflected from a first object. The interference mitigation processor uses the second received radio signal to remove selected samples from the baseband sampled stream that are attributed to radio signals reflected from the first object to produce a modified baseband sampled stream. The receiver uses the modified baseband sampled stream to detect a second object more distant than the first object.

Radar device

A radar device is configured in such a manner that each of transmission radars uses, as the amount of phase modulation, a value determined from either one of a positive integer value that is less than or equal to a result of division obtained by dividing the number of hits of a transmission RF signal by the number of the transmission radars and a value of 0 ; a hit number h of the transmission RF signal; and the number of hits.

Radar system with improved angle formation

A radar system for recording the environment of a motor vehicle includes at least two transmitter antennas for emitting transmission signals, one or more receiver antennas for receiving transmission signals that have been reflected by objects, and signal processing equipment for processing the received signals. The antennas are arranged so that a phase center of at least one receiver antenna, with regard to a spatial direction R, does not lie outside of phase centers of two transmitter antennas that are offset in this spatial direction. The signals received by this receiver antenna are separated according to the two signal portions respectively originating from these two transmitter antennas.

Radar interference mitigation method and apparatus

Methods and apparatuses pertaining to radar interference mitigation are described. A processor associated with an apparatus may generate a plurality of wave frames such that one or more aspects of the plurality of wave frames vary from one wave frame to another wave frame of the plurality of wave frames. Each of the plurality of wave frames may respectively include a plurality of chirps. A wireless transmitter associated with the apparatus may transmit the plurality of wave frames. A wireless receiver associated with the apparatus may receive one or more reflected waves comprising at least a portion of one or more of the wave frames reflected by an object. The processor may determine a distance between the object and the apparatus, a speed of the objet, or both, based on an analysis of the one or more reflected waves.

Radar device

雷达装置采用的结构包括：接收单元，在停止了来自本雷达装置的雷达发送信号的发送的干扰测定区间中，接收从其他雷达装置发送的雷达发送信号；A/D变换单元，将由所述接收单元接收到的、来自所述其他雷达装置的雷达发送信号从模拟信号变换为数字信号；以及干扰检测单元，进行所述数字信号即离散样本和规定的系数序列之间的相关运算，将所述数字信号中包含的规定的频率分量作为干扰信号分量来检测。

Interference cancellation in an fmcw radar

The invention relates to a radar system in which a transmission signal of an FMCW radar sensor (10) comprises a sequence of frequency modulation ramps (30) and is phase-modulated according to a first code sequence (Cm) that is orthogonal to a respective other code sequence (Cq), a time-synchronized transmission signal of another FMCW radar sensor (10') being phase-modulated according to said other code sequence. The radar echoes are phase-modulated using a code sequence (Cm, fm) which correlates to the first code sequence (Cm), and a distance (d) and/or a relative speed (v) of at least one located object (44) is determined on the basis of a frequency spectrum of a Fourier analysis (32, 38) in a first dimension using respective sampled values of a radar echo of a frequency modulation ramp (30) and in a second dimension using the phase-modulated sequence of the radar echoes of the frequency modulation ramps (30) of the radar sensor (10) transmission signal. The invention also relates to a radar system for a vehicle fleet, wherein a code set (Cm 1 , Cm 2 ) is used for phase modulation and demodulation purposes in an FMCW radar sensor (10), said code set together with a code set (Cq 1 , Cq 2 ) used in a radar sensor (10") of another vehicle satisfying a code set orthogonality condition.

Radar system for detecting the surroundings with compensation of interfering signals

In a frequency-modulated radar system and method for detecting the surroundings, a compensation of interfering effects is achieved by varying one of the following values: a) a time spacing or temporal distance between the transmitted frequency ramps or the time gap between the frequency ramps, b) a time from the start of the respective transmitted frequency ramp to the beginning of the scanning of the received signal, c) a frequency at the start of the transmitted frequency ramp, and d) a sign of the slope of the transmitted frequency ramps.

Radar interference mitigation method and apparatus

Methods and apparatuses pertaining to radar interference mitigation are described. A processor associated with an apparatus may generate a plurality of wave frames such that one or more aspects of the plurality of wave frames vary from one wave frame to another wave frame of the plurality of wave frames. Each of the plurality of wave frames may respectively include a plurality of chirps. A wireless transmitter associated with the apparatus may transmit the plurality of wave frames. A wireless receiver associated with the apparatus may receive one or more reflected waves comprising at least a portion of one or more of the wave frames reflected by an object. The processor may determine a distance between the object and the apparatus, a speed of the objet, or both, based on an analysis of the one or more reflected waves.

Method for the transmission of radio signals by a radar installed in a vehicle, and corresponding device and computer program

The invention relates to reducing interference affecting radars installed in vehicles based on smart and coordinated selection of radio transmission parameters according to contextual information specific to each radar. The solution of the invention proposes taking into account the orientation of the radar's line of sight in order to determine the parameters for the transmission of a radio signal by the radar. By associating a set of parameters for the transmission of a radio signal with the radar's orientation, it is ensured that radars installed in vehicles driving in opposite directions, and therefore having opposite orientations, are incapable of selecting, even by chance, sets of radio signal transmission parameters that are identical or have similarities such that the two signals could cause interference.

Radar device

【課題】レーダ装置における物標の検知精度を向上する。 【解決手段】レーダ装置は、送信信号を送信する複数の送信アンテナと、送信信号に対してドップラシフト量と符号系列とに対応する位相回転量を付与することにより、送信信号を複数の送信アンテナから多重送信する送信回路と、を具備する。送信信号の送信周期において、送信信号の送信遅延が設定される。複数の送信アンテナに対して、ドップラシフト量及び符号系列の少なくとも一方が異なる、ドップラシフト量と符号系列との組み合わせがそれぞれ対応付けられる。第１のドップラシフト量に対応する符号系列による多重数と、第２のドップラシフト量に対応する符号系列による多重数とが異なる。 【選択図】図１

Sensing in wireless communications system

The present disclosure provides a base station, comprising: a transceiver; and a processor coupled to the transceiver and configured to transmit, to a user equipment (UE), resource allocation information including a time pattern information for a set of subcarriers and symbols, the time pattern information including at least one of: one or more uplink component for uplink communication, one or more downlink component for downlink communication, one or more radar sensing component, and one or more flexible component for uplink or downlink communication or radar sensing.

Method and system for target detection using MIMO radar

一种在目标检测系统中感测目标的方法，包括处理电路，耦合到该处理电路以及形成稀疏发射均匀线性阵列(ULA)的数量为N T 的多个发射天线的复用器，该复用器配置为基于来自本地振荡器的信号来生成复用的且相位调制的发射信号，处理电路还被耦合以经由形成密集接收ULA的多个接收天线来接收信号。该方法包括：经由发射天线发射多个发射信号，以形成与块循环探测信号矩阵相对应的一般辐射方向图；以及经由接收天线接收由于向K个目标发射的多个发射信号的反向散射而产生的接收信号。该方法还包括处理所接收的反射信号，以确定在发射天线的视场内目标的存在、范围和/或角位置。还公开了相应的目标检测系统和包括该目标检测系统的车辆。

Radar communication unified signal transmission method, reception method and device

레이더 통신 일체화 신호 송신 방법, 수신 방법 및 기기에 관한 것으로서, 통신 기술 분야에 관한 것이다. 방법은, 송신될 통신 정보 비트에 따라 제1 신호의 분극 상태를 결정하는 단계(단계(S201)); 제1 신호의 분극 상태에 따라 제1 신호를 송신하는 단계;를 포함하며; 여기서, 제1 신호는 레이더 신호이다(단계(S202)).

Simultaneous beamforming and multiple input-multiple output (MIMO) schemes in radar system

A radar system comprises a set of transmitters and a processor coupled to the set of transmitters. The processor is configured to modulate a first portion of a chirp in a chirp frame according to a first phase. The processor is further configured to modulate a second portion of the chirp in the chirp frame according to a second phase and configured to combine the first and second portions of the chirp to produce a phase-modified chirp. The processor is further configured to instruct the set of transmitters to transmit the phase-modified chirp by applying time division multiple access (TDMA) and by directing radio frequency energy according to a target angle and a target gain.

ミリ波帯域でのレーダ及び通信信号のクラスタ・ベースの多重化

本発明では、幾何学的チャネル・モデルによって記述されるチャネル・スパース性を活用することによって、ミリ波帯域でのレーダと通信との共存のための新規な方法が提案される。バイスタティック・ブロードキャストのレーダ／通信共用（ＪＲＣ）システムにおける送信機／受信機共用構成は、複数の配列されたアンテナからなる。

用于雷达探测和通信的正交相位调制

一种通过数字通信符号序列对相位调制连续波雷达系统(10)的雷达波进行正交调制的方法。该方法包括以下步骤：选择(34)等距双相或多相相位调制序列；对雷达系统(10)的连续雷达波进行相位调制(46)，以及朝向场景发射(48)经正交相位调制的连续雷达波。该方法的特征在于以下步骤：通过对相位调制序列应用外部编码(H)来生成(36)检测序列(s)；基于所选择的相位调制，来在复数平面中选择(38)通信范围(C)；生成(40)包括多个序列成员的通信序列(c)；通过对通信序列(c)的成员应用单射映射函数(Γ)，来将通信序列(c)映射(42)到通信范围(C)中，以及计算(44)检测序列(s)的成员与经映射的通信序列(c)的虚部的成员的数乘积。对雷达系统(10)的连续波进行相位调制(46)的步骤是根据所计算出的数乘积来执行的。

用于雷达探测和通信的正交相位调制

一种通过数字通信符号序列对相位调制连续波雷达系统(10)的雷达波进行正交调制的方法。该方法包括以下步骤：选择(34)等距双相或多相相位调制序列；对雷达系统(10)的连续雷达波进行相位调制(46)，以及朝向场景发射(48)经正交相位调制的连续雷达波。该方法的特征在于以下步骤：通过对相位调制序列应用外部编码(H)来生成(36)检测序列(s)；基于所选择的相位调制，来在复数平面中选择(38)通信范围(C)；生成(40)包括多个序列成员的通信序列(c)；通过对通信序列(c)的成员应用单射映射函数(Γ)，来将通信序列(c)映射(42)到通信范围(C)中，以及计算(44)检测序列(s)的成员与经映射的通信序列(c)的虚部的成员的数乘积。对雷达系统(10)的连续波进行相位调制(46)的步骤是根据所计算出的数乘积来执行的。

到達時間ベースの測距のハイブリッド方法

本方法は、多重化されたサブ信号のセットを含む測距信号を送信機から受信するステップであって、各多重化サブ信号が周波数のセット内の周波数によって特徴付けられる、ステップと、測距信号の一連の時間領域サンプルに基づいて時間ベースの到達時間推定値を算出するステップと、時間ベースの到達時間の時間ベースの不確実性を算出するステップと、多重化サブ信号のセットの多重化サブ信号のサブセット内の各サブ信号ペアについて、サブ信号ペアの位相差を抽出するステップと、多重化サブ信号のサブセット内の各サブ信号ペアの位相差に基づいて、位相ベースの到着時間推定値を算出するステップと、位相ベースの到着時間推定値の位相ベースの不確実性を算出するステップと、時間ベースの不確実性および位相ベースの不確実性に基づいて、時間ベースの到着時間推定値と位相ベースの到着時間推定値の重み付けされた組合せとして、ハイブリッド到着時間推定値を算出するステップとを含む。【選択図】図１

Non-active chirp dithering in fmcw radar

Non-transitory computer-readable mediums and systems are provided in which a portion of each chirp of a series of chirps is held at an offset frequency for a period of time, and in which the offset frequency, the period of time or both is varied or dithered across the chirps of the series of chirps. The portion of a chirp that is held at an offset frequency for a period of time may be a non-active portion of the chirp, during which the chirp is not sampled. In some implementations, the portion of a chirp that is held at an offset frequency for a period of time is during a falling portion of the chirp, which may be at the beginning of the falling portion, or at the end of the falling portion immediately before a rise portion of a succeeding chirp.

雷达干扰减轻

在一些方面，设备可以接收指示与另一设备相关联的第一雷达信号模式参数集的通信。该设备可以至少部分地基于接收到指示第一雷达信号模式参数集的通信，选择不同于第一雷达信号模式参数集的第二雷达信号模式参数集。该设备可以使用第二雷达信号模式参数集发送雷达信号。提供了许多其他方面。

相位编码的调频连续波雷达

本公开涉及相位编码的调频连续波雷达。在一个实施例中，一种操作雷达的方法包括：生成一组啁啾信号；发射该组啁啾信号；接收与发射的该组啁啾信号相对应的啁啾信号；使用有限状态机(FSM)以基于编码向每个发射的啁啾信号或每个接收的啁啾信号施加相移；以及基于编码解调接收的啁啾信号。

探测信号的发射方法、装置及存储介质

本申请公开了一种探测信号的发射方法、装置及存储介质，属于数据探测技术领域。所述方法包括：可以确定探测装置的视场角的朝向，并根据探测装置的视场角的朝向和预定义规则，从多个抗干扰参数中选择一个抗干扰参数作为目标抗干扰参数，以使探测装置按照目标抗干扰参数发射探测信号。由此可见，探测装置的视场角的朝向不同，选择的目标抗干扰参数就不同，基于此，视场角的朝向不同的多个探测装置按照各自对应的目标抗干扰参数发射的探测信号之间不会产生干扰。示例性地，当探测装置为雷达时，对于协同式雷达，按照各自对应的抗干扰参数发射探测信号，可以避免使用相同的发射频带发射探测信号时产生干扰的问题。

Radar system operating method and radar system having improved range resolution by mutually delayed orthogonal codes

A method of operating a modulated continuous-wave radar system at least comprises steps of transmitting (38), with a modulation frequency, a plurality of n modulated continuous radar waves that represent mutually orthogonal codes towards a scene with a potential object to be detected, wherein the transmitted modulated continuous radar waves of the plurality of modulated continuous radar waves are consecutively transmitted with a constant time lag (τ) given by one nth of a period of the modulation frequency; digitally converting (44) a plurality of reflected and received radar signals with a sampling rate (l/ts) that is equal to the modulation frequency; decoding (46) individual range information for each received radar signal; and determining (48) a range between the radar system and the object on the basis of the decoded individual range information.

通过相互延迟正交码具有改进的距离分辨率的雷达系统操作方法和雷达系统

一种操作调制连续波雷达系统的方法，至少包括以下步骤：以调制频率朝向具有要被检测的潜在物体的场景发射(38)表示相互正交码的多个n个调制连续雷达波，其中多个调制连续雷达波中的已发射调制连续雷达波以由调制频率的周期的n分之一给定的恒定时滞(τ)被连续地发射；以等于调制频率的采样率(1/t s )对多个被反射并且接收到的雷达信号进行数字转换(44)；对每个接收到的雷达信号的单独距离信息进行解码(46)；并且基于所解码的单独距离信息确定(48)雷达系统与物体之间的距离。

通过相互延迟正交码具有改进的距离分辨率的雷达系统操作方法和雷达系统

一种操作调制连续波雷达系统的方法，至少包括以下步骤：以调制频率朝向具有要被检测的潜在物体的场景发射(38)表示相互正交码的多个n个调制连续雷达波，其中多个调制连续雷达波中的已发射调制连续雷达波以由调制频率的周期的n分之一给定的恒定时滞(τ)被连续地发射；以等于调制频率的采样率(1/t s )对多个被反射并且接收到的雷达信号进行数字转换(44)；对每个接收到的雷达信号的单独距离信息进行解码(46)；并且基于所解码的单独距离信息确定(48)雷达系统与物体之间的距离。

Split-steer amplifier with invertible output

A split-steer amplifier with an invertible phase output, includes a first transistor having its base coupled to a positive node of an input port, its emitter coupled to ground, and collector connected to a positive intermediate node; a second transistor having its base coupled to a negative node of the input port, its emitter coupled to ground, and collector connected to a negative intermediate node; and multiple output ports each having a transistor arrangement operable to couple a positive node of that output port to the positive intermediate node and a negative node of that output port to the negative intermediate node, operable to couple the positive node of that output port to the negative intermediate node and the negative node of that output port to the positive intermediate node, and operable to decouple the positive node and the negative node of that output port from the intermediate nodes.

MIMO radar apparatuses and MIMO radar methods

The present disclosure relates to a hybrid multiple-input multiple-output (MIMO) radar concept. Via a first subset of a plurality of transmit channels and during a first time interval, first frequency-modulated continuous-wave (FMCW) radar signals are con-currently transmitted with different phase offsets among different transmit channels of the first subset in accordance with a first predefined code division multiplexing scheme. Via a second subset of the transmit channels and during a second time interval subsequent to the first time interval, second FMCW radar signals are concurrently transmitted with different phase offsets among different transmit channels of the second subset in accordance with a second predefined code division multiplexing scheme.

レーダー通信統合化信号の送信方法、受信方法及び機器

レーダー通信統合化信号の送信方法、受信方法及び機器であって、通信の技術分野に関する。該方法は、送信すべき通信情報ビットに基づき、第１信号の偏波状態を特定する（ステップ２０１）と、第１信号の偏波状態に基づき、第１信号を送信する（ステップ２０２）とを含み、ここで、第１信号はレーダー信号である。【選択図】 図２

可重新配置的雷达单元、集成电路和其方法

描述一种可重新配置的雷达单元，其包括：毫米波(mmW)收发器(Tx/Rx)电路；混合模拟和基带集成电路；以及信号处理器电路。所述mmW Tx/Rx电路、混合模拟和基带集成电路以及信号处理器电路被配置成支持多个雷达操作模式。雷达灵敏度监测和架构重新配置控制单元(260)耦合到所述信号处理器电路且被配置成监测雷达性能，且响应于所述雷达性能，引发所述雷达操作模式的改变。以此方式，所述可重新配置的雷达单元支持多种雷达操作模式，且可取决于任何主导雷达性能条件动态地采用所述多种雷达操作模式。

신호 검출 방법 및 장치, 그리고 레이더 시스템

본 출원은 차량 인터넷, 지능형 차량, 자율 주행 또는 지능형 주행 분야에 적용될 수 있는 신호 검출 방법 및 장치, 그리고 레이더 시스템을 제공한다. 신호 검출 방법(700)은: 제1 프레임의 제1 기간에 제1 레이더가 제1 사운딩 신호를 송신하는 것(710)을 포함한다. 제1 레이더는 제1 프레임의 제2 기간에 제2 사운딩 신호를 송신한다(720). 제1 레이더는 제1 사운딩 신호 및 제2 사운딩 신호에 대응하는 반사 신호들을 수신한다(730). 제1 레이더는 제1 거리-속도 스펙트럼과 제2 거리-속도 스펙트럼 사이의 차이에 기반하여 오경보 타깃을 결정한다(740). 제2 사운딩 신호는 제1 사운딩 신호에 기반한 제1 위상 코드 변조를 통해 획득된 신호이다. 신호 검출 방법은 오경보 타깃을 결정하고 실제 타깃을 식별하는 데 사용될 수 있으므로, 정확한 타깃을 검출할 확률과 신뢰성을 향상시킬 수 있다.

Simultaneous beamforming and multiple input-multiple output (mimo) schemes in radar system

A radar system (100) comprises a set of transmitters (202) and a processor (204) coupled to the set of transmitters. The processor is configured to modulate a first portion of a chirp in a chirp frame according to a first phase. The processor is further configured to modulate a second portion of the chirp in the chirp frame according to a second phase and configured to combine the first and second portions of the chirp to produce a phase-modified chirp. The processor is further configured to instruct the set of transmitters to transmit the phase-modified chirp by applying time division multiple access (TDMA) and by directing radio frequency energy according to a target angle and a target gain.

信号検出方法および装置ならびにレーダー・システム

Methods and systems for signal transmission using orthogonal doppler coding

Radar signal generator arrangement, radar arrangement and radar system

A radar system with a radar signal generator arrangement and one or more radar arrangements is disclosed. The radar signal generator arrangement comprises: a reference signal source configured to provide a reference signal; a plurality of radar signal generators and a scheduler. Each radar signal generator is configured to generate a respective radar signal based on the reference signal for transmission via a millimeter-wave link. Each radar signal generator is configured to align a phase of the respective radar signal with a phase of the reference signal. The scheduler is configured to provide for each radar signal generator a respective scheduling signal which indicates a time- frequency characteristic for the respective radar signal. Each radar signal generator is configured to generate the respective radar signal having the time-frequency characteristic indicated by the respective scheduling signal. The radar arrangement comprises a plurality of radar transceivers and a switch box.

A hybrid method for time-of-arrival-based ranging

A method includes: receiving a ranging signal from the transmitter comprising a set of multiplexed sub-signals, each multiplexed sub-signal characterized by a frequency in a set of frequencies; calculating a time-based time-of-arrival estimate based on the series of time- domain samples of the ranging signal; calculating a time-based uncertainty of the time-based time-of-arrival; for each sub-signal pair in a subset of multiplexed sub-signals of the set of multiplexed sub-signals, extracting a phase difference of the sub-signal pair; calculating a phase-based time-of-arrival estimate based on the phase difference of each sub-signal pair in the subset of multiplexed sub-signals; calculating a phase-based uncertainty of the phase- based time-of-arrival estimate; and calculating a hybrid time-of-arrival estimate as a weighted combination of the time-based time-of-arrival estimate, the phase-based time-of- arrival estimate, based on the time-based uncertainty and the phase-based uncertainty.

Software defined automotive radar

A method for operating a radar sensing system includes configuring a transmitter to transmit a radio signal. A receiver is configured to receive radio signals. The received radio signals include the transmitted radio signal transmitted by the transmitter and reflected from objects in the environment. The method includes with advanced temporal knowledge of the codes used to modulate the transmitted radio signal, using code values of the plurality of codes, and in combination with a bank of digital finite impulse response (FIR) filters, generating complementary signals of any self-interference noise. The method further includes subtracting the complementary signals at one or more points in the receiver prior to the interference desensing the receiver. The radar sensing system further includes a frequency modulated continuous wave (FMCW) interference canceller for detecting the largest interference signals and sequentially cancelling them while signal processing the received radio signals.

交差点で交通管理を制御するシステム

Simultaneous beamforming and multiple input-multiple output (mimo) schemes in radar system

A radar system (100) comprises a set of transmitters (202) and a processor (204) coupled to the set of transmitters. The processor is configured to modulate a first portion of a chirp in a chirp frame according to a first phase. The processor is further configured to modulate a second portion of the chirp in the chirp frame according to a second phase and configured to combine the first and second portions of the chirp to produce a phase-modified chirp. The processor is further configured to instruct the set of transmitters to transmit the phase-modified chirp by applying time division multiple access (TDMA) and by directing radio frequency energy according to a target angle and a target gain.

Mimo-radarvorrichtung und mimo-radarverfahren

Die vorliegende Offenbarung betrifft eine MIMO-Radarvorrichtung, die eine Senderschaltung mit einer Mehrzahl von Sendekanälen umfasst. Die Senderschaltung ist ausgebildet, über einen ersten Sendekanal eine erste Sequenz von FMCW-Radar-Chirps derart zu senden, dass die Start- und/oder Stoppfrequenzen jedes von zumindest einem Abschnitt der FMCW-Radar-Chirps der ersten Sequenz voneinander verschieden sind. Die Senderschaltung ist ausgebildet, über einen zweiten Sendekanal eine zweite Sequenz von FMCW-Radar-Chirps zu senden, wobei die Start- und/oder Stoppfrequenzen jedes von zumindest einem Abschnitt der FMCW-Radar-Chirps der zweiten Sequenz voneinander verschieden sind. Die erste und die zweite Sequenz von FMCW-Radar-Chirps werden gleichzeitig gesendet. Die Steuerschaltung ist ausgebildet, den ersten und den zweiten Sendekanal zu steuern, um Phasen der FMCW-Radar-Chirps der ersten Sequenz und der zweiten Sequenz gemäß einem vordefinierten Doppler-Divisions-Multiplex-, DDM-, Schema einzustellen.

雷达系统中的同时波束成形和多输入多输出（mimo）方案

一种雷达系统(100)包括发射器(202)集和耦合到该发射器集的处理器(204)。该处理器被配置为根据第一相位来调制线性调频脉冲帧中的线性调频脉冲的第一部分。该处理器进一步被配置为根据第二相位来调制线性调频脉冲帧中的线性调频脉冲的第二部分，并且被配置为组合线性调频脉冲的第一部分和第二部分以产生经相位修改的线性调频脉冲。该处理器进一步被配置为通过应用时分多址(TDMA)并且通过根据目标角度和目标增益引导射频能量，来指示该发射器集发射经相位修改的线性调频脉冲。

Radarvorrichtung und Verfahren zum Betreiben einer Radarvorrichtung

Die Erfindung betrifft eine Radarvorrichtung, mit einer Sendeeinrichtung und einer Empfangseinrichtung. Die Sendeeinrichtung ist dazu ausgebildet, ein Radarsendesignal zu erzeugen und auszusenden. Die Empfangseinrichtung ist dazu ausgebildet, ein Radarempfangssignal zu empfangen und auszuwerten, wobei die Empfangseinrichtung weiter dazu ausgebildet ist, zum Auswerten des Radarempfangssignals eine Unterabtastung mit einer vorgegebenen Abtastrate durchzuführen. Die Sendeeinrichtung ist weiter dazu ausgebildet, zum Erzeugen des Radarsendesignals Unterträger zu verwenden, wobei sich Leerstellen im Frequenzbereich zwischen vorgegebenen Unterträgern befinden, und wobei die Abtastfrequenz und die Leerstellen im Frequenzbereich derart gewählt sind, dass ein bei der Unterabtastung entstehendes Signal-Alias mittels Aliasing im Wesentlichen auf Leerstellen niedrigerer Frequenz gefaltet wird.

对自动化车辆有用的mimo检测器设备

描述了对自动化车辆有用的MIMO检测器设备。检测器设备(22)的示例性示例实施例包括被配置成接收包含多个编码的辐射(28)的接收器(40)。编码中的每一个与多个传输(26A、26B)中的一个相关联，且编码中的每一个与其他编码不同。处理器(42)被配置成获得与编码的至少一个预定相位编码频谱(56)相对应的信息、确定(58)由至少一个接收器接收的辐射的经解调信号频谱(60)、确定(64)所确定经解调信号频谱(60)的至少一个特性、基于所确定特性来调整(66)至少一个预定相位编码频谱(56)以生成经调整相位编码频谱(68)、以及基于经调整相位编码频谱(68)来细化(70)所确定经解调信号频谱(60)以生成细化的经解调信号频谱(72)。