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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 11. Отображено 11.
23-06-2023 дата публикации

RC oscillator device and external clock frequency calibration method

Номер: CN116317947A
Автор: CHU JIE, WANG SHUAILI, ZHANG YUXIN, WU YONG, CAI JUEPING, WEN KAILIN
Принадлежит:

The invention relates to the technical field of oscillators, in particular to an RC oscillator device which comprises a target RC oscillator, a storage module, a temperature sensor and a current source array module. The target RC oscillator takes the current source array module as a charging power supply and outputs a square wave signal; a process error calibration code and temperature error calibration code comparison table is stored in the storage module; the current source array module obtains the real-time temperature from the temperature sensor, obtains the process error calibration code and the temperature error calibration code corresponding to the real-time temperature from the storage module, and corrects the current output size, thereby changing the capacitor charging speed of the target RC oscillator, and further adjusting the output signal frequency of the RC oscillator. And the RC oscillator outputs a square wave signal of a target frequency.

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Номер записи: 1
18-07-2023 дата публикации

Chip surface defect identification method based on information entropy convolutional neural network

Номер: CN116452919A
Автор: CHU JIE, WANG YUXIANG, ZHANG CHENGKAI, WEN KAILIN, LI TIANHONG, KONG LIANG, ZHANG JINGCHEN, CAI JUEPING
Принадлежит:

The invention relates to an image processing technology, in particular to a chip surface defect identification method based on an information entropy convolutional neural network, which comprises the following steps of: constructing a data set: acquiring a preset category to which a chip belongs by utilizing a chip production process, and photographing and collecting an optical image of a chip sample wafer surface by utilizing visible light imaging equipment to construct the data set, dividing a training set and a test set, constructing a convolutional neural network initial model and training: inputting an image of the training set into the convolutional neural network initial model, performing training by taking a cross entropy loss function as an optimization target so as to obtain a convolutional neural network intermediate model, constructing an information entropy convolutional neural network initial model, and training the information entropy convolutional neural network intermediate ...

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Номер записи: 2
23-03-2005 дата публикации

Data equalization method for burst communication

Номер: CN0001599364A
Автор: LI ZAN, CHANG YILIN, CAI JUEPING, ZAN LI, YILIN CHANG, JUEPING CAI
Принадлежит:

This invention discloses a data balance method for burst communication based on the following: theory: An initial estimate vector of a channel parameter carries out a balance process to the received baseband deformation signals to output decisive data to recover the original delivery signal, the steps as estimating channel parameter vectors to the received signals based on the initial vector of the channel parameter and received signals to get estimated vectors to figure out the path branch, measured increment then to get measures of all necessary states and find out the state with the minimum branch measure to backtrack its path and transmit the decisive signal at the time scale.

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Номер записи: 3
30-05-2023 дата публикации

Oscillator frequency digital temperature calibration device

Номер: CN116192054A
Автор: CHU JIE, WANG YANDING, ZHANG YUXIN, WU YONG, CAI JUEPING, WEN KAILIN
Принадлежит:

The invention relates to the technical field of oscillator calibration, in particular to an oscillator frequency digital temperature calibration device which comprises an RC oscillator, a voltage-controlled oscillator and a digital temperature calibration module, due to the fact that the amplitudes of the frequencies of the two oscillators are different along with temperature change, count values obtained at different temperatures are different, the current temperature is obtained according to the count values, and the digital temperature calibration module is connected with the RC oscillator. And additional temperature compensation is provided for the RC oscillator according to the temperature, the charging current of the RC oscillator is changed, and the frequency of the RC oscillator is corrected. According to the frequency digital calibration method provided by the invention, an external reference clock is not needed, the frequency relation between the internal RC oscillator and the ...

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Номер записи: 4
05-08-2015 дата публикации

Circuit system power consumption prediction method based on FPGA chip

Номер: CN104820787A
Автор: CAI JUEPING, TONG YA'NA, BI WENTING, SONG ZHEZHE, XU WEIJIA
Принадлежит:

The invention discloses a circuit system power consumption prediction method based on an FPGA (Field Programmable Gate Array) chip. The method mainly solves the problem that the system thermal failure and reliability analysis requirements cannot be met in the prior art. The method comprises the following realization steps that: 1, internal resources of the FPGA are subjected to module division according to functions, and smallest modeling units are determined; 2, the power consumption influence factor is determined by aiming at the smallest modeling units; 3, a power consumption mathematic model of the smallest units is built according to the relationship between the power consumption influence factor and the power consumption; 4, a predication value of the mathematic model is compared with a measured value of a hardware platform, and the precision of the mathematic model is verified; and 5, the power consumption of each of the smallest unit is calculated by adopting the mathematic model ...

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Номер записи: 5
12-02-2003 дата публикации

Method for realizing frequency synchronization in orthogonal FDM system

Номер: CN0001396730A
Автор: MAO YONGJUN, ZHANG HAIBIN, CAI JUEPING, YONGJUN MAO, HAIBIN ZHANG, JUEPING CAI
Принадлежит:

A method for realizing frequency synchronization in orthogonal FDM system features the combination of the fraction in orthogonal FDM system features the combination of the fraction multiplying synchronization with integer multiplying one, and includes such steps as frequency tracking before FFT, estimating fraction multiplying frequency shift, preliminary correcting, then capturing the frequency,estimating integer multiplying frequency shift, and fine frequency correction by discrete Fourier transformation and serial-parallel conversion. Its advantage is high synchronization precision.

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Номер записи: 6
18-07-2023 дата публикации

Panoramic audio coding method based on deep learning

Номер: CN116453527A
Автор: LU FENGYUAN, WEN KAILIN, CHU JIE, LI TIANHONG, ZHANG CHENGKAI, KONG LIANG, WANG KUN, CAI JUEPING
Принадлежит:

The invention relates to the technical field of panoramic audio coding. The invention discloses a panoramic audio coding method based on deep learning, and the method comprises the steps: inputting a driving signal of an audio signal of L frames generated by each sound source, an azimuth angle of each sound source relative to a coordinate origin, an elevation angle of each sound source relative to the coordinate origin, and a spatial linear distance of each sound source relative to the coordinate origin into a reference signal generator R of a feedback module F; when each sound source of the reference sound source S is driven by a driving signal to emit sound waves which are broadcast to a space, the microphone array A receives the sound waves, records the sound waves as L frames of audio signals and transmits the L frames of audio signals to the deep neural network panoramic sound coding module N, the evaluator E obtains a difference evaluation error according to statistical indexes, and ...

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Номер записи: 7
04-01-2012 дата публикации

Application-oriented network on chip generation method based on regular topology database

Номер: CN0101847168B
Автор: CAI JUEPING, HAO YUE, HUANG GANG, LEI JINGYING, LI SHENG, LI ZAN, LIU ZHENG, REN ZEKUN, WANG LIAN, YAO LEI, JUEPING CAI, YUE HAO, GANG HUANG, JINGYING LEI, SHENG LI, ZAN LI, ZHENG LIU, ZEKUN REN, LIAN WANG, LEI YAO
Принадлежит:

The invention discloses a design method of a customizable network on chip based on a regular topology database, mainly solving the problem of rapid automatic generation of a topological structure with high performance. The design method comprises the steps of: firstly, inputting an application picture and an IP core configuration file according to the characteristics of the target application, and analyzing the performance requirements of the obtained application and an optimized target function; then analyzing the parameter functions of the obtained performance by utilizing a value function to generate the network topological structure, and initially establishing the topology by combining an AO* arithmetic and depth-first search; optimizing the network structure according to the communication requirement between an IP core and a core; and finally, designing a non-deadlock and an efficient route according to the characteristics of the generated layer topology, and establishing a communication ...

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Номер записи: 8
23-11-2011 дата публикации

Method for identifying untypical wave crests and wave troughs of pulse wave

Номер: CN0102247129A
Автор: XIANGYUN ZENG, LIANFENG ZHAO, NIANDE YUAN, JUEPING CAI, ZENG XIANGYUN, ZHAO LIANFENG, YUAN NIANDE, CAI JUEPING
Принадлежит:

The invention discloses a method for identifying irregular wave troughs of a pulse wave signal, belonging to the technical field of pulse wave signal identification. The method comprises the following steps of: identifying one section of input pulse signal and extracting one typical pulse wave period; intercepting data of a declining branch part in the typical period, and carrying out vertical coordinate transformation to convert the traditional stepped untypical wave crests and wave troughs into typical wave crests and wave troughs and further identify the positions of maximum values and minimum values of the transformed data; and finally, amending the positions of the identified maximum values according to data which are not transformed, and marking the positions of the finally-identified wave crests and wave troughs of pulse wave and outputting the positions for analysis. According to the method disclosed by the invention, the missed identification and mistaken identification of a pulse ...

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Номер записи: 9
02-03-2005 дата публикации

Data balancing method for meteor trail communication

Номер: CN0001588934A
Автор: LI ZAN, JIN LIJUN, CAI JUEPING, ZAN LI, LIJUN JIN, JUEPING CAI
Принадлежит:

This invention discloses a data balance method in meteoric trace communication. The theory is that the initial evaluation vector of the channel parameter even processes the received baseband distortion signals to output decisive data to recover the original sent signals. The method includes the following steps: The channel parameter evaluation vector is got according to its initial evaluation vector and the received signals to compute out the al states path branch metric gain of the received signals further to get the branch meter of each state path and finds out the metric state with the minimum branch meter, then to delete the threshold and state then to backtrace the path and output related decisive signal.

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Номер записи: 10
29-09-2010 дата публикации

Application-oriented network on chip generation method based on regular topology database

Номер: CN0101847168A
Автор: JUEPING CAI, YUE HAO, GANG HUANG, JINGYING LEI, SHENG LI, ZAN LI, ZHENG LIU, ZEKUN REN, LIAN WANG, LEI YAO, CAI JUEPING, HAO YUE, HUANG GANG, LEI JINGYING, LI SHENG, LI ZAN, LIU ZHENG, REN ZEKUN, WANG LIAN, YAO LEI
Принадлежит:

The invention discloses a design method of a customizable network on chip based on a regular topology database, mainly solving the problem of rapid automatic generation of a topological structure with high performance. The design method comprises the steps of: firstly, inputting an application picture and an IP core configuration file according to the characteristics of the target application, and analyzing the performance requirements of the obtained application and an optimized target function; then analyzing the parameter functions of the obtained performance by utilizing a value function to generate the network topological structure, and initially establishing the topology by combining an AO* arithmetic and depth-first search; optimizing the network structure according to the communication requirement between an IP core and a core; and finally, designing a non-deadlock and an efficient route according to the characteristics of the generated layer topology, and establishing a communication ...

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Номер записи: 11