Non-uniform linear array direction of arrival estimation method based on quantum badger search mechanism

The invention discloses a non-uniform linear array direction-of-arrival estimation method based on a quantum badger search mechanism. The method comprises the following steps: step 1, obtaining special non-uniform linear array received signal snapshot sampling data subjected to infinite norm normalization processing; 2, obtaining a direction of arrival estimation equation, and obtaining an angle estimation value objective function; 3, initializing the quantum position, the position and related parameters of the quantum honey; 4, calculating a quantum badger fitness value to obtain an initial global optimal quantum position; 5, determining a quantum position updating strategy, and updating the quantum position of the quantum badger by using a simulated simplified quantum revolving door; 6, mapping the quantum position into a quantum badger position, calculating a fitness value, and updating a global optimal quantum position; 7, if the maximum number of iterations is not reached, returning ...

包装袋（嘉博预混料）

Train bottom part matching method

The invention discloses a train bottom part matching method, which comprises the following steps of: 1, calibrating item points; 2, training a target detection model; 3, generating a feature item point set; 4, calculating feature item point descriptors; 5, feature item point set matching is carried out; and step 6, generating an image matching result and an item point missing result. Compared with an existing design method, the train bottom part matching method has the advantages that the train bottom characteristics are combined, direct matching is carried out with the train bottom part item points as objects, historical position matching of the train bottom part item points can be well achieved, and the train bottom part item point matching method has the advantage of being high in part item point matching accuracy; the problem of mismatching of item points located at the edge and item points located in planes of different heights caused by a complex vehicle bottom structure is well solved ...

Circular array direction of arrival estimation method based on quantum rhizomyidae mechanism and Sigmoid kernel correlation entropy

The invention provides a circular array direction-of-arrival estimation method based on a quantum rhizomyidae mechanism and Sigmoid kernel correlation entropy, a quantum optimization method is fused into a rhizomyidae bionic mechanism calculation method, a calculation method of the quantum rhizomyidae mechanism is obtained, and the convergence performance of a rhizomyidae algorithm is improved. A cross-correlation entropy covariance matrix based on a Sigmoid kernel function is constructed by using received information data, a low-order matrix based on Sigmoid kernel correlation entropy is obtained, the defect of weak impact noise resistance of second-order and above moments is eliminated, and a maximum likelihood equation based on Sigmoid kernel correlation entropy is solved in a search interval by using a designed quantum rhizonolia mechanism. The method solves the problem of large calculation amount of multi-dimensional nonlinear optimization related to the maximum likelihood method, ...

Display panel and display device

The embodiment of the invention provides a display panel and a display device. The display panel comprises a substrate; a plurality of sub-pixels disposed on the substrate; the plurality of sub-pixels comprise a first sub-pixel, the first sub-pixel comprises a display light-emitting device and a peep-proof light-emitting device, the display light-emitting device comprises a first part, the peep-proof light-emitting device is located between the first part and the substrate, and the orthographic projection of the first part on the substrate covers the orthographic projection of the peep-proof light-emitting device on the substrate; a shading layer is arranged between the peep-proof luminescent device and the first part; in the first sub-pixel, the side, close to the adjacent sub-pixel, of the peep-proof light-emitting device is not provided with a display light-emitting device. According to the anti-peeping display panel, when a squint angle viewer observes the display panel, the light emitted ...

Multi-target safe Massive MIMO resource allocation method based on intelligent reflecting surface

The invention provides a multi-target safe MassiveMIMO resource allocation method based on an intelligent reflecting surface, which combines the intelligence of a wild horse group with a dominating relationship, designs a multi-target wild horse optimization algorithm for solving a multi-target continuous optimization problem, improves a position updating formula for intelligently executing grazing behaviors and mating behaviors by the original wild horse group, and improves the accuracy of the multi-target safe MassiveMIMO resource allocation method based on the intelligent reflecting surface. Moreover, an intelligent grouping optimization mode of the wild horse group is abandoned, and the application limitation that an existing wild horse optimization algorithm can only solve a single-target optimization problem is broken through. For a safe MassiveMIMO communication system based on an intelligent reflecting surface, a phase shift control angle and a base station power transmission matrix ...

Train inspection robot control system

The invention discloses a train inspection robot control system. A train inspection robot advances in a maintenance trench according to a preset inspection track; the road surface detection module collects and detects road surface information of the trench in real time; the positioning module generates positioning information in the advancing process; the recognition unit inputs the pothole image into a pothole recognition model to obtain pothole data, and inputs the obstacle image into an obstacle recognition model to obtain obstacle data; the advancing adjusting unit obtains a real-time moving track according to processing of the positioning information and adjusts an advancing route of the train inspection robot when the depth of the potholes is larger than a depth threshold value or the sectional area of the obstacle is larger than an area threshold value; the deviation calculation unit performs subtraction on the real-time moving track and a preset inspection track to obtain a track ...

Multi-unmanned aerial vehicle cooperative dynamic direction-of-arrival estimation method

The invention discloses a multi-unmanned aerial vehicle cooperative dynamic direction-of-arrival estimation method, and the method comprises the steps: employing a plurality of unmanned aerial vehicles, enabling each unmanned aerial vehicle to carry a receiving antenna, forming a signal receiving array with a variable structure, selecting a proper array structure according to the number of to-be-measured information sources, and carrying out the estimation of the to-be-measured information sources. A fractional low-order covariance array or a virtual fractional low-order covariance array of received data under the structure is deduced, a maximum likelihood equation is further deduced, the equation is solved through a culture migrant bird mechanism, a direction of arrival estimation result of one-time snapshot is obtained, the weighted sample fractional low-order covariance array is updated through an updating equation, and a direction of arrival estimation result of one-time snapshot is ...

Pit digging device for municipal road soft foundation construction and construction method thereof

The invention relates to the technical field of municipal road construction equipment, in particular to a pit digging device for municipal road soft foundation construction and a construction method thereof.The pit digging device comprises a pit digging machine and a drill bit arranged on the pit digging machine; the protection mechanism comprises a lifting plate arranged on the hole digging machine and a protection sleeve installed on the lifting plate and used for protecting a hole, the lifting plate is arranged on the hole digging machine in a sliding fit mode in the height direction of the drill bit, and the drill bit is sleeved with the protection sleeve. The pit digging device has the effect that the construction efficiency of the pit digging device can be improved.

Application of JAK inhibitor in medicine for preventing and treating radiation-induced myelosuppression and intestinal injury

The invention discloses a novel application method of a JAK inhibitor as a medicine for preventing or treating radiation-induced myelosuppression and intestinal injury. Modern pharmacological experiments and biological experiments prove that mouse intragastric administration of a certain dose of the JAK inhibitor has an obvious protection effect on radiation-induced bone marrow suppression and intestinal injury, which prompts that therapeutic administration can prevent and treat radiation-induced bone marrow and intestinal injury; the compound can be used as a medicine for protecting life body injury caused by radioactive substance radiation, nuclear power station leakage, space ionizing radiation and tumor radiotherapy.

Robot train inspection system

The invention discloses a robot train inspection system. According to the technical scheme, the robot train inspection system is characterized by comprising an inspection robot, an overhaul terminal and an inspection system body used for controlling the inspection robot and the overhaul terminal; the inspection robot comprises a movable chassis and a manipulator, the manipulator is arranged on the movable chassis, the end of the manipulator is connected with a visual recognition device and a marking device, the visual recognition device is used for detecting and recognizing parts at the bottom of a train, and the marking device is used for spraying thermoplastic coating. The thermoplastic coating is used for being sprayed to a part and rapidly cooled to form a material film coated on the surface of the part, and the inspection system is used for detecting the part, judging whether the part is abnormal or not and forming an overhauling table record for overhauling the abnormal part. The ...

Separation and purification method of amylose and amylose in indica rice

The invention discloses a separation and purification method for amylose and amylopectin in indica rice, and solves the problem that excessive organic solvents are used in the separation and purification process of amylose and amylopectin in the prior art. The invention provides a separation and purification method of amylose and amylopectin in indica rice, the method is simple to operate, the separation and purification temperature does not exceed 80 DEG C, and the separated amylose and amylopectin are high in purity and stable in property. The separation and purification method of the indica rice amylose and amylopectin is simple to operate, not only can be used for extracting the amylose, but also can be used for effectively extracting the amylopectin. No anti-degradation component is added in the separation and purification of the amylose and amylopectin, the structures and properties of the obtained amylose and amylopectin keep natural states, the yield and purity are higher than those ...

Soft bed mattress production and processing equipment

The invention relates to the technical field of mattress processing, in particular to soft bed mattress production and processing equipment which comprises a processing support of a box-shaped frame structure, four vertically-arranged lifting screws are rotatably mounted at the corners of the processing support, and a lifting top plate in threaded connection with the lifting screws is arranged in the processing support. The lower end of the lifting top plate is provided with hole opening equipment used for opening holes in the latex mattress, and a containing platform used for containing the latex mattress is arranged below the hole opening equipment. According to the device, uniform air hole forming of the latex mattress can be achieved through the hole forming equipment, it is ensured that the air holes are cylindrical in the air hole forming process, the problem that the diameters of the air holes of the latex mattress are gradually increased from the middle to the two sides is avoided ...

Harris eagle mechanism image segmentation method based on bamboo law and entropy

According to the Harris eagle mechanism image segmentation method based on the bamboo law and the entropy provided by the invention, the bamboo law and the Harris eagle mechanism are combined and are used for designing an energy equation of a transition stage of the Harris eagle mechanism, so that a solving mechanism is more in line with a hunting law of natural organisms; and effective balance can be achieved in the two stages of global exploration and local mining. In the global exploration stage, entropy is used for carrying out variation on the Harris eagle population, and the possibility of falling into a local optimal solution is reduced. Compared with some image segmentation methods based on existing traditional swarm intelligence, the Harris eagle mechanism image segmentation method based on the bamboo law and entropy has the advantages of higher convergence speed, higher convergence precision, higher segmentation precision and better robustness.

Interaction method and device, electronic equipment, storage medium and product

The invention relates to an interaction method and device, electronic equipment, a storage medium and a product. The method comprises the steps that target guide information is displayed on a preview flow interface; and in response to triggering of the preview stream interface, entering a live video interface, and highlighting materials related to the target guide information on the live video interface. Therefore, the materials related to the target guide information are highlighted on the live video interface, so that the user can intuitively understand the intention of entering the live video room, the materials related to the target guide information are displayed to the user, the user can perform related operation conveniently, and the watching intention of the user is improved.