123 results about "Digital array" patented technology

The invention discloses a dynamic unmanned aerial vehicle cluster electromagnetic characteristic modeling method and system based on a digital array radar, and the method specifically comprises the steps: setting radar system parameters, building a time-varying motion model of an unmanned aerial vehicle cluster, and obtaining the formation pose distribution of the unmanned aerial vehicle cluster under a global coordinate system; component decomposition is carried out on an unmanned aerial vehicle CAD model, shielding analysis is carried out under the radar sight line constraint condition, time-varying scattering center parameter extraction is carried out according to the dynamic electromagnetic effect between targets, scattering center space distribution of an unmanned aerial vehicle cluster is updated in a time sequence recursion mode, and construction of a time-varying scattering center model is completed; a radar system signal model is constructed according to digital array radar DAR parameters, multi-dimensional dynamic feature extraction and parameter mapping are carried out, digital array radar multichannel signal modulation and unmanned aerial vehicle cluster target radar echo construction are completed, and radar scattering electromagnetic characteristic modeling of a dynamic unmanned aerial vehicle cluster is realized. According to the method, the model description accuracy is improved, and the calculation process is more efficient.

The invention provides a self-adaptive beam forming method for a reconfigurable digital array and an IP core. The method comprises the following steps: controlling the starting state of each array element in the array according to an obtained array element state vector # imgabs0 #; according to the # imgabs 1 #, obtaining a row starting vector # imgabs 2 # and a column starting vector # imgabs 3 #, the number of starting rows and columns # imgabs 4 # and # imgabs 5 #, and the number of the central row and column of the effective array area # imgabs 6 # and # imgabs 7 #; according to the # imgabs 8 #, the # imgabs 9 #, the # imgabs 10 # and the # imgabs 11 #, a row interval vector # imgabs 12 # and a column interval vector # imgabs 13 # are determined; recoding the array elements of the effective array area according to the # imgabs14 #, the # imgabs15 # and the # imgabs16 #, and obtaining a mask vector # imgabs17 # of a static weight according to the starting condition of the array elements; obtaining a static wave beam weight vector # imgabs20 # and a static wave beam weight vector # imgabs21 # in the azimuth dimension and the pitching dimension according to the # imgabs18 #, the # imgabs19 # and pre-configured target parameters; according to the # imgabs 22 #, the # imgabs 23 # and the # imgabs 24 #, numbering all the enabled array elements to determine a two-dimensional reconfigurable static wave beam weight vector # imgabs 25 #; storing the obtained signal data of each array element into a target reconfigurable digital array according to a new numbering result, calculating a covariance matrix of the target reconfigurable digital array, and performing inversion; a two-dimensional adaptive beam weight vector # imgabs27 # is determined in combination with # imgabs26 #; and an adaptive wave beam is obtained based on # imgabs28 #, and reconstruction design and flexible editing of array arrangement are realized.

The invention discloses a high-throughput multi-row parallel high-speed scanning high-resolution microscopic imaging device and method based on adaptive optics. A spatial light modulator is used for carrying out pixel-level regulation and control on a light beam phase to generate a strip-shaped light spot, and a special arrangement mode of a detector array is used for realizing a one-to-many relationship between a scanning line and an imaging line and realizing improvement of an imaging speed, a signal-to-noise ratio of an imaging result and a resolution ratio; a full-digital area array wavefront regulation and control method is utilized, a spatial light modulator is used for rapidly and dynamically compensating a laser wave surface according to imaging result feedback, the laser wave surface is free of distortion, and the influence of aberration on an imaging result is reduced; designing a double telecentric Fourier transform structure capable of simultaneously keeping rotational symmetry of object plane and image plane light beams, and realizing distortionless mapping of scanning light beam quality and a linear signal system; a switchable design of two scanning modes is developed, high-flux, high-resolution and high-speed light field scanning is realized, and the advantages of large visual field, high resolution and high frame rate imaging are achieved.

The invention relates to the technical field of qec correction of digital arrays, in particular to a feedback-based digital qec correction method for a digital array, and the method comprises the following steps: S1, constructing a transceiving channel distortion model, and calculating distortion model parameters; s2, constructing a transmitting terminal pre-distortion model according to the distortion model parameters, and performing transmitting terminal qec correction; and S3, constructing a post-distortion model of the receiving end according to the distortion model parameters, and performing qec correction of the receiving end. According to the scheme, the problem of mirror image and direct current correction of the receiving and transmitting end of the digital array antenna is solved digitally, the method does not depend on hardware design and does not need support of an external reference source, mirror image qec correction is carried out by using a digital method based on feedback, error correction of the mirror image and the local oscillator is also realized by the method, and the method is high in precision and good in portability.

The invention discloses a broadband digital array interference system emission correction method and device, and the method comprises a time delay correction process, and the time delay correction process comprises the steps: a correction source generates N paths of correction dot frequency signals with completely consistent time delay and initial phases at the same time, and the frequency change of each path of correction dot frequency signal is f1-f3 in sequence; each path of correction dot frequency signal is amplified by a transmitting channel and coupled by a coupler and then is sent to a correction selection switch; the correction selection switch gates the N paths of coupling signals one by one and sends the signals to the correction receiver; the correction receiver outputs correction sample signals of N transmitting channels; the signal processing module is used for processing N paths of 3N correction sample signals by adopting a three-frequency-point correction method to obtain a time delay compensation table of all transmitting channels; the method has the advantages of simple correction process and low time cost.

The invention discloses a multi-target tracking and multi-constraint resource allocation method in an all-digital array radar system. The method comprises the following steps: constructing a radar multi-target tracking and multi-constraint resource allocation optimization model; at the current tracking moment, predicting the state of each to-be-tracked target, calculating the expected detection probability of each to-be-tracked target and forming a set; judging whether the set meets a constraint condition in the optimization model or not, and if not, increasing the stop time and updating the set until the set meets the constraint condition; selecting beam data of two targets with the lowest detection probability and the second lowest detection probability in the set, and performing filtering and prediction; and repeating the steps until the current moment reaches the radar tracking set time, and outputting the prediction states of all tracked targets at each tracking moment. According to the invention, the all-digital array radar system can consume minimum radar resources while ensuring the target tracking precision.

The invention discloses a main lobe gain maximization method for an analog-digital hybrid array of a radar communication system. According to the method, the ratio of the maximum minimum main lobe level to the peak side lobe level is used as a target function, and under the main lobe ripple constraint, the simulation weight constant modulus constraint and the digital weight power constraint, the ADMM (Alternating Direction of Multiplexing) is used for carrying out joint design on the simulation weight and the digital weight. In the ADMM framework, a Riemann conjugate gradient method is adopted to solve a simulation weight subproblem with constant modulus constraint; and solving a digital weight by adopting a Lagrange multiplier method. A numerical result shows that the method can generate better main lobe ripples and lower peak side lobe level, and has good beam directional diagram accurate control performance.

The invention provides a rapid calibration method and device for a large digital array, and the method comprises the steps: S1, transmitting different random sequences to a plurality of transmitting channels at the same time, setting the lengths of the random sequences to be the same, and carrying out the cyclic transmission of the random sequences in each channel of an antenna array; s2, a far field receiving end in the antenna array is provided with a signal collector, the signal collector is used for receiving the radio frequency signals transmitted by the plurality of transmitting channels, the starting time point of the transmitted signals is analyzed, and then the random sequence in each transmitting channel and the digital IQ data received by the signal collector are respectively used for cross-correlation operation; and S3, according to the obtained cross-correlation value information, calculating by using a channel estimation algorithm to obtain multiple hardware circuit characteristics for calibration, and compensating the multiple hardware circuit characteristics to each path for calibration. The problems that an existing large antenna array is low in calibration speed, and calibration can be achieved only by additionally preparing a public channel are solved.

The invention provides an extensible distributed simultaneous receiving digital multi-beam forming closed-loop series processing architecture and method, which are used for realizing distributed digital multi-beam forming of large-scale array low data interaction. The architecture comprises M identical processing sub-modules, and each processing sub-module outputs L beams to form LM simultaneous multi-beams. And each processing sub-module is serially connected with two adjacent processing sub-modules to form a series closed loop structure. And each processing sub-module performs sub-array beam forming of LM beams of local P unit antennas, timestamps data after beam forming, and performs caching processing and beam forming according to design requirements. The beam former adopts a closed-loop series architecture, and the interaction data rate between processing submodules is only related to the sampling data rate S and the number of digital beams formed at the same time. The method is suitable for low-cost and rapid scale expansion of medium and large scale digital array multi-beam antennas.

The invention discloses an encryption communication method of an integrated quantum random number generator, and relates to the technical field of communication encryption. According to the method, service data is classified, general service data is subjected to operations of extracting digits from a quantum random number sequence, disorganizing, sorting, multiplying with a digit correction coefficient, rounding off, forming a column vector, multiplying with an encryption matrix and the like to generate an encrypted digit array as a key, and the cracking difficulty of an attacker is increased; according to confidential service data, digits are extracted from a quantum random number sequence, a rectangular plane coordinate system is constructed after similar processing, a circle is drawn through coordinate points, tangent parts are screened out to form a unique and complex encrypted graph which serves as a secret key, the graph structure is difficult to restore, the attempt to illegally acquire confidential data is effectively resisted, and the confidential service quality is improved. And an encryption method in the prior art is replaced, so that the encryption security is improved.

The invention relates to a digital array antenna and digital circuit synchronization method, device, equipment and medium, and the digital array antenna and digital circuit synchronization method comprises the steps: carrying out the module preprocessing of a master module and a slave module, and the module preprocessing comprises the configuration of FPGA codes for the master module and the slave module and the initialization of a radio frequency transceiver; the master module triggers a module handshake request to the slave module, and obtains a signal receiving state of the slave module according to the module handshake request; the master module sends a synchronous trigger signal, a synchronous pulse generator is triggered to generate a synchronous pulse signal, and the master module and all the slave modules perform radio frequency transceiver local oscillator phase synchronization through a clock signal and a first pulse of the synchronous pulse signal; and the master module and all the slave modules perform sampling clock synchronization, digital clock synchronization and interface synchronization of the A / D converter and the D / A converter through the clock signal and the second pulse of the synchronization pulse signal to complete synchronization. According to the invention, the digital array antenna and the digital circuit can be synchronized.

The invention belongs to the technical field of digital array processing, and discloses a broadband digital array adaptive equalization method. The calibration component is responsible for generating and transmitting a standard linear frequency modulation signal under the control of an instruction and timing, and transmitting the standard linear frequency modulation signal to each digital component in the array after the standard linear frequency modulation signal is radiated by an internal monitoring network or an external monitoring horn; the digital component is responsible for receiving the radio frequency signal sent by the calibration component, completing signal amplification, frequency mixing, filtering, AD sampling, DDC and other processing under the control of an instruction and timing to obtain baseband IQ data, and then completing automatic calculation and programming of an equalization coefficient based on an adaptive equalization algorithm; the radar control is responsible for sending a control instruction and timing to the digital assembly and the calibration assembly through an optical fiber transmission network, and automatically completing traversal of all digital channels. According to the invention, the digital array has adaptive broadband equalization capability, so that the problem that the broadband performance is reduced due to factors such as temperature drift and device aging in a long-term working process is solved.

The invention discloses a graph database decimal index coding and decoding method based on key value storage, and belongs to the technical field of graph database management. The coding method comprises the following steps: receiving numerical values to be coded and sorting direction parameters thereof; normalizing the to-be-coded numerical value, and extracting a symbol, a weight and a digital array of the normalized to-be-coded numerical value; dynamically generating a coding auxiliary parameter set based on the sorting direction parameters and the symbols, the coding auxiliary parameter set comprising sorting masks, escape characters and filling characters; converting the symbol, the weight and the digital array into a binary coded stream according to the coding auxiliary parameter set; adding a data termination mark consisting of escape characters at the tail of the binary coded stream; and outputting the binary coded stream for orderly storage and retrieval of the data. According to the method, the decimal value is decomposed into the symbol, the weight and the digital array, and then the compact binary coding mode is adopted for coding, so that efficient storage and query of the graph database index are realized.

The invention discloses a frequency-phase MIMO hybrid digital array radar detection system, and the system comprises a frequency-phase MIMO integrated antenna module which is used for enabling a radio-frequency signal to be radiated to a specified direction of a free space after beamforming during transmission, receiving a signal in a characteristic beam direction in the free space during receiving, and outputting the signal to an integrated channel module; the integrated channel module is used for down-converting the received radio frequency signal to the intermediate frequency and up-converting the intermediate frequency signal to the radio frequency; the high-speed signal processor is used for generating an intermediate-frequency excitation signal, receiving an intermediate-frequency signal and processing the intermediate-frequency signal to complete target detection and tracking; and the secondary power supply module is used for converting power supply voltage provided by the outside and supplying power to each module. According to the technical scheme, the radar detection system is miniaturized and low in cost, and has higher survivability and anti-interference ability.

The invention discloses a communication perception symbiotic digital analog hybrid beam generation method and device, and relates to the field of wireless communication or other related technical fields, and the method comprises the steps: building a communication signal model and a perception signal model; for the communication signal model and the sensing signal model, adopting a Cramer-Rao lower bound of target angle estimation as a measurement parameter of sensing performance, and constructing a beam forming matrix optimization problem under the constraint of the measurement parameter; the beam forming matrix optimization problem is simplified by adopting a fractional programming algorithm and a Shuerr complement condition, and the beam forming matrix optimization problem is iteratively solved by adopting a penalty dual decomposition algorithm; and based on the optimized digital beam forming matrix and analog beam forming matrix, generating a digital-analog hybrid beam in an Internet of Vehicles communication sensing scene. According to the invention, the technical problem that a communication structure obtained by an all-digital array cannot simultaneously support efficient communication and high-precision remote sensing in the prior art is solved.

The present invention discloses a zero-IF receiving array IQ imbalance beam-level compensation method, comprising: obtaining a radio frequency signal received by each array element; obtaining M intermediate frequency analog signals; obtaining M baseband analog in-phase signals and M baseband analog quadrature signals; performing A / D sampling on the M baseband analog in-phase signals and the M baseband analog quadrature signals respectively to obtain M baseband digital complex signals; obtaining M receiving channel amplitude and phase error compensation values; performing channel amplitude and phase error compensation and beam weighting compensation on the M baseband digital complex signals of the digital array, and summing the values to obtain a beamformed output complex signal; and utilizing the circular characteristics of the received baseband digital complex signals to estimate and compensate for the IQ imbalance error after beamforming to obtain a final baseband digital complex signal of the digital array. The present invention has the advantages of providing a multi-channel IQ imbalance compensation method that does not require channel-by-channel estimation and compensation for IQ imbalance errors and protects the circular characteristics of communication signals from being destroyed.

The invention relates to the technical field of digital signal processing, in particular to an implementation method of a sidelobe cancellation algorithm based on an FPGA and an HLS. Complex operations such as matrix inversion in the sidelobe cancellation algorithm are realized through the HLS, and the HLS adopts a C / C + + programming mode, so that the development efficiency is high, and iteration and upgrading of IP configuration can be quickly realized. Other operations in the sidelobe cancellation algorithm are realized through the FPGA, so that the relationship between resources consumed by large data volume processing and processing delay is balanced. Through cooperative work of the FPGA and the HLS, the development efficiency can be improved while the requirements for high processing performance and high real-time performance are met, parameters such as the number of channels, the number of sampling points and the matrix inversion dimension can be controlled through parameter configuration in the implementation process of the sidelobe cancellation algorithm, and the method has the advantages of being high in real-time performance, high in universality and high in development efficiency and has wide application prospects. The digital array signal processor can be widely applied to radar digital array signal processor products.

The embodiment of the invention provides an antenna array surface control method, an antenna array surface control device and an antenna array surface control system for a digital array radar, electronic equipment, a computer readable storage medium and a computer program product. The antenna array plane control method for the digital array radar comprises the following steps: updating a library file based on a user terminal; wherein the library file is a parameter file which is predefined by a user and is related to antenna array plane control; in response to the received task information sent by the user terminal, determining array surface control information based on the task information; based on the array surface control information and a library file associated with the array surface control information, determining an array surface control instruction; and issuing the array plane control instruction to a digital array unit of the digital array radar. By utilizing the method disclosed by the invention, different tasks can be matched to realize the expansion and multiplexing of the digital array module (DAM), the flexible switching of the working modes of the antenna array surface and the shortening of the development time of a control program.

The invention relates to the field of active phased arrays, and provides a digital array ground installation pattern test method and system, and the method comprises the steps: achieving the time synchronization of a digital array and a test control system through a synchronization pulse; under time synchronization, a radio frequency digital chip in the digital array completes test data acquisition and storage according to a control instruction; and reading the stored test data, and obtaining a digital array installation directional diagram in each working mode through offline calculation in data processing software. The invention provides an effective solution for radio frequency digital integrated multifunctional digital array directional diagram test, and can be expanded to be used for digital array G / T value test.

The invention relates to a large-scale digital array channel rapid monitoring module, which comprises a timing and data separation module, a parameter management module, a channel data extraction module and a channel data packaging output module, and is characterized in that firstly, a frame structure is designed, each channel is monitored, and channel monitoring data is sent to the timing and data separation module; the timing and data separation module separates required data from the data and sends the data to the channel data extraction module, the parameter management module is used for parameter configuration and management, and the channel data extraction module receives configuration parameters sent by the parameter management module, extracts each input channel data and sends the extracted data to the channel data packaging output module; and the channel data packaging output module is used for caching, packaging and outputting the extracted multi-channel data. The array channel monitoring efficiency can be improved by dozens of times, the large-scale digital array full-array channel monitoring time can be shortened to be within several minutes from the original several hours, and the product debugging requirement is met.

The invention provides an embedded digital-analog hybrid array system and method based on modular mosaic units. The method comprises the steps that a tested radar transmits a radar signal in a real-time coupling mode; the cluster scene mapping unit resolves cluster scene time-space-spectrum-energy information under the unified coordinate system in real time and generates corresponding control parameters; the digital-analog hybrid system control unit calculates array control parameters of the analog array and the digital array according to the control parameters; the digital-analog mixing unit completes cluster scene simulation according to the array control parameters and completes cluster target characteristic dynamic simulation; and the computer real-time control unit controls the working time sequence and information interaction of other modules in real time according to the input signal, solves a three-axis control instruction of the flight turntable in real time, and sends the instruction to the cluster scene mapping unit and the flight turntable. According to the invention, cluster target simulation is completed through an embedded digital array, and dynamic simulation of electromagnetic characteristics of a cluster complex scene is rapidly realized.

The present invention discloses a phase modulation dynamic truncation device, belonging to the fields of communications, radar, electronic countermeasures, and integrated radio frequency technology. The device comprises N-channel phase modulation sampling modules, one-channel energy sensing module, N-channel dynamic truncation modules, N-channel phase demodulation modules, and one-channel beamforming module. By estimating the signal energy within the instantaneous bandwidth, the device adaptively selects an appropriate bit width at the unit level for dynamic truncation. Phase modulation and demodulation are simultaneously introduced to reduce truncation spurious noise. This device optimizes distributed digital array edge acquisition, computing, processing, and other resources and throughput efficiency, while ensuring that the overall array synthesis meets signal-to-noise ratio and dynamic range requirements. This significantly reduces implementation complexity, power consumption, and cost.

The application discloses an unmanned radar detection and array monitoring integrated method, which comprises the following steps: 10) establishing a digital array monitoring system; 20) designing a radar detection and array monitoring integrated working mode; and 30) designing a radar detection and array monitoring integrated scheduling. In the working mode, the target detection mode and the array monitoring mode are considered and designed compatibly, the target detection performance is maintained, the array channel monitoring can be performed in real time on line, and the antenna array health state can be mastered in real time. The application provides an implementation approach for real-time on-line automatic array channel monitoring.

The invention discloses a digital array reconnaissance system signal search scheduling method, system and device and a medium, and relates to the technical field of digital array reconnaissance system signal search scheduling, and the method comprises the steps: introducing a virtual and real node mode, configuring a wave position arrangement model of each working frequency band for any to-be-processed digital array reconnaissance system, acquiring configuration parameters input by a user, setting the wave position arrangement model according to the configuration parameters, and generating a signal search wave position arrangement model of each working frequency band; and acquiring a search space-frequency domain setting instruction given by a user, and performing signal search based on the search space-frequency domain setting instruction in combination with the signal search wave position arrangement model. Through introduction of virtual and real nodes and flexible configuration based on user input, the flexibility and adaptability of wave position arrangement are remarkably improved, the requirement for the memory capacity of a computer is lowered, diversified task requirements can be met, and dynamic adjustment can be conducted according to different environments and target characteristics.

This disclosure proposes a calibration method, apparatus, electronic device, and storage medium for a digital array antenna. The method includes: determining the number of channels to be calibrated in the digital array antenna, wherein the channels to be calibrated are either transmit channels or receive channels; generating a calibration signal corresponding to the channels to be calibrated based on the number of channels, wherein the signal length of the calibration signal is greater than a first threshold, and the autocorrelation descriptor value of the calibration signal is greater than a second threshold; acquiring the coupled signal received after the calibration signal is transmitted through the channels to be calibrated and a coupling network; performing correlation detection on the calibration signal and the coupled signal to obtain channel characteristics, wherein the channel characteristics include the amplitude, phase, and delay of the channels to be calibrated; and compensating the channels to be calibrated based on the channel characteristics. Therefore, on-orbit non-linking calibration of the digital array antenna can be achieved based on a calibration signal with a long time domain length and good autocorrelation, thereby improving the overall calibration and operating efficiency of the array.

The invention discloses a time-frequency synchronization and data distribution system based on a passive optical network, and belongs to the technical field of time-frequency testing. Time frequency and data integrated distribution is realized by using the passive optical network, the wiring difficulty of the array antenna can be effectively simplified, and the size of the array antenna is reduced. The complexity of a time-frequency synchronization and data transmission system of the digital array antenna is simplified, the time delay self-calibration of the transmitting component is realized, and the stability of the system is improved. Comprising a master device, an optical splitter and a slave device, wherein the master device is connected with a time-frequency reference signal, generates an optical signal and transmits the optical signal to the slave device through the optical splitter; the optical splitter carries out power division on a main end downlink optical signal to the slave end device, and transmits an uplink signal of the slave end device to the main end device after converging the uplink signal; and the slave end device receives the optical signal transmitted by the master end device, recovers the tail end frequency signal, completes master-slave transmission time delay calibration and time synchronization, and demodulates the digital signal.

The invention discloses an array surface component monitoring and maintenance method, system, equipment and medium, and relates to the technical field of digital array surface monitoring, and the method comprises the following steps: dividing a digital array surface into a first plane grid region and a second plane grid region by taking half of the physical size of a component and a channel as step length; and forming an array plane layout description file for describing component and channel layout on the basis, parametrically configuring to-be-monitored component information, and monitoring the display layout of an interface. And performing polling monitoring on the component based on the description file, and displaying monitoring information on a monitoring interface. When a fault occurs, a fault component or channel can be shielded, and component information is updated after the component is replaced. According to the method, efficient management and precise maintenance of the digital array plane are realized, the component state can be monitored in real time, the fault component can be accurately positioned, the component information can be quickly updated, the reliability and maintenance efficiency of the system are improved, and the method has remarkable practicability and application value.

1. The name of the design product: portable calibration frame (THDS equipment). 2. The use of the design product: used for the light path calibration of railway infrared axle temperature detection system (THDS equipment); the portable calibration frame is fixed on a specific position of the steel rail, and the light path of the digital array probe is corrected to the center point of the target of the portable calibration frame (THDS equipment) by using a laser sight, so as to ensure the azimuth angle accuracy of the railway infrared axle temperature detection system (THDS equipment). 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention relates to a method and a device for determining whether a cooling structure (6, 7) which can be manufactured is used for cooling a semiconductor device (9, 13). The invention relates to a computer-executable method for operating a semiconductor device (6, 6 '), where the method receives as input (10) at least one of i) physical parameters of the semiconductor device, where the physical parameters are physical characteristics related to the semiconductor device, and ii) a digital array (1) indicating a spatial power distribution of the semiconductor device, where the digital array (1) is a digital array (2) indicating a spatial power distribution of the semiconductor device. Wherein the method comprises the following steps: 1) using a topology optimization algorithm to determine (11) a cooling structure (6, 7) on the basis of the received input (10); and 2) based on the determined cooling structure (6, 6 ') can be physically manufactured (9) to provide a file type containing the determined cooling structure (6, 6') as output (12) in a data format, where the file type containing the determined cooling structure is a vector file type. It further provides a semiconductor device formed using the method of the invention, a corresponding electronic design automation tool.

The invention discloses a stratospheric airship-borne radar large-scale digital array antenna design method and device, and belongs to the technical field of radar antennas. According to stratospheric airship platform parameters and radar detection requirements, the technical requirements of the array antenna are calculated; according to the technical requirements, designing an azimuth all-digital and pitching beamforming digital array antenna, and optimizing the unit amplitude and phase of the digital array antenna by adopting a genetic algorithm; the digital array antenna comprises an azimuth 96-unit full-digital architecture and a pitching 10-unit series feed forming array. According to the invention, the contradiction between the large-scale and wide-angle scanning design of the array antenna and the light weight and low power consumption requirements of the stratospheric airship is overcome, and a solid technical basis is provided for the application of the stratospheric airship-borne radar.