112 results about "Large array" patented technology

An in-memory computing (IMC) accelerator using a high-density operation circuit and a low-power sense amplifier as a peripheral circuit includes a plurality of dynamic random-access memory (DRAM) banks each including a pair of cell arrays, a data supply logic, a memory, and a controller for IMC, a global SRAM, and a top-level controller, wherein the cell array includes a plurality of subarrays, each of the subarrays includes a DRAM array including a big array and a little array, and an arithmetic circuit configured to perform an operation, and the arithmetic circuit includes a sense amplifier configured to amplify a bit line voltage difference, and a compact multiply-accumulate (MAC)-single instruction multiple data (SIMD) unit (CMSU) for an MAC operation and an SIMD operation, so that functionality of an in-memory operation is diversified.

The liquid nitrogen testing Dewar comprises a cold end cold head, a variable-temperature cold head, a variable-temperature rotating block, a transition block, a loading cold head, the large-area-array detector, an optical window, a liquid nitrogen storage cavity and a shell. The cold energy of the liquid nitrogen storage cavity forms a solid conduction path through the cold-end cold head, the variable-temperature cold head and the loading cold head, and the variable-temperature cold head and the loading cold head adopt a low-heat-conduction hollow structure to construct a basic temperature difference; the variable-temperature rotating block is connected with the variable-temperature cold head and the transition block in a threaded fit mode, and the cooling capacity obtaining degree of the object carrying cold head is changed by means of position adjustment. According to the invention, flexible and accurate temperature control within the range of 80K-180K can be realized, the cooling capacity transmission is efficient, the use is convenient, and the device is suitable for testing and screening of large-area-array detectors with different temperature requirements.

The invention provides an avalanche photodiode with asymmetric optical resonance and a photosensitive array, and the avalanche photodiode comprises an electrode layer which is internally provided with a first windowing region; the top reflecting mirror is arranged in the first windowing area, the transmittance of the incident side of the top reflecting mirror to the light with the target wavelength is higher than a preset transmittance threshold value, and the reflectivity of the emergent side of the top reflecting mirror to the light with the target wavelength is higher than a preset reflectivity threshold value; the substrate is arranged on the emergent side of the top reflecting mirror; the buffer layer is arranged on one side, deviating from the top reflecting mirror, of the substrate; the active region is arranged on the side, away from the top reflector, of the buffer layer; and a bottom high reflective metal film. The top reflector and the bottom high-reflectivity metal film form an asymmetric optical resonant structure, and the purposes of filtering and absorption enhancement are achieved. And the bottom high-reflection metal film is low in process difficulty and suitable for preparation of large-array devices.

The invention provides an ultra-large array plane radar satellite decoupling vacuum thermal test method, which comprises the following steps of: arranging a satellite and radar antennas in a vacuum tank, detaching the radar antennas from the satellite, arranging the radar antennas on one side of the satellite side by side, and respectively arranging infrared simulation devices around the satellite to simulate external thermal flow; a wave absorbing device is arranged on an antenna array plane to absorb microwaves and simulate external heat flow, the power level of an infrared simulation device is adjusted according to the heat radiation level of the satellite surface, the power level of the wave absorbing device is adjusted according to the microwave emission power and the heat radiation level of the antenna array plane, and a vacuum thermal test is performed on the satellite and the antenna. According to the invention, vacuum thermal tests on a satellite and a radar antenna due to an overlarge antenna array plane can be avoided, a whole-satellite microwave wireless emission state test can be carried out, extremely high-risk operation caused by hanging and unfolding in an antenna tank is avoided after the antenna and the satellite are decoupled, the tank occupation period of links such as test state establishment and withdrawal is greatly shortened, and the test efficiency is improved. And the model development efficiency is improved.

The invention provides a target object angle estimation method using a large-scale array antenna to carry out high angle analysis, which receives an input signal matrix through the array antenna, the input signal matrix is an emission signal or a reflection signal of at least one target object, and the method comprises the following steps: S1, inputting the input signal matrix to a first operation model, obtaining the number of target objects and roughly estimated target angles corresponding to the positions of the target objects; s2, inputting the number of the target objects and the input signal matrix into a second operation model for singular value decomposition, and obtaining a noise matrix; s3, obtaining an iteration angle range through the roughly estimated target angle obtained in the step S1; and S4, inputting the complex tracking matrix and the noise matrix corresponding to the iteration angle range into a third operation model, and performing iteration of the angle range, thereby obtaining a precise target angle.

A miniaturized, automated method for controlled printing of large arrays of nano- to femtoliter droplets by actively transporting mother droplets over hydrophilic-in-hydrophobic (“HIH”) micropatches. The technology uses single or double-plate devices where mother droplets can be actuated and HIH micropatches on one or both plates of the device where the droplets are printed. Due to the selective wettability of the hydrophilic micropatches in a hydrophobic matrix, large nano- to femtoliter droplet arrays are created when mother droplets are transported over the arrays. The parent droplets are moved by various droplet actuation principles. Also, a method using two plates placed one top another while being separated by a spacer. One plate is dedicated to confirming and guiding parent droplets by using hydrophilic patches in a hydrophobic matrix, while the other plate contains HIH arrays for printing of the droplets. When the parent droplet guidance plate is rotated over the plate dedicated to printing of nano- to femtoliter droplets, the droplets are dispensed inside the HIH array utilizing their selective wettability. The methods allow the parent droplets to move over the HIH arrays many times, providing advantages for performing bio-assays or miniaturized materials synthesis in nano- to femtoliter sized droplets. With controlled evaporation of the dispensed droplets of solution, large arrays of printed material can be generated in seconds. The methods provide a nano- to femtoliter droplet printing technique for a wide variety of applications, e.g., protein- or cell-based bio-assays or printing of crystalline structures, suspensions of nanoparticles or microelectronic components.

This invention discloses a level shifting structure for an ultra-large area array ultra-low temperature infrared image sensor, comprising a conversion signal input transistor; a level clamping transistor whose gate receives a level VREF, and whose source is connected to the source of a feedback transistor, the gate of an inverting N-transistor, and the gate of an inverting P-transistor; the drain of the level clamping transistor connected to the source of the conversion signal input transistor; the drain of the conversion signal input transistor grounded; the gate of the conversion signal input transistor connected to IP; the drain of the feedback transistor connected to the source of a pull-up transistor, whose gate is connected to IP, and whose drain is connected to power supply VDD; the source of the inverting P-transistor connected to power supply VDD, whose drain is connected to the source of the inverting N-transistor, and whose drain is grounded; and a level VREF generated by a level VREF clamping matching voltage generation circuit. This ensures that the source-drain voltage of the conversion signal input transistor (low threshold transistor) does not exceed 1.2V, ensuring that the device operates within its normal voltage range and avoiding the risk of breakdown.

A method for sharing reconfigurable array modes in a MIMO frequency-modulated millimeter-wave radar array is proposed. Based on the echo signal data matrices obtained after analog-to-digital conversion of different modes, range-dimensional Fast Fourier Transform (FFT) and velocity-dimensional FFT are performed on them respectively to obtain the range-Doppler spectrum of different transmit / receive antenna combinations. Different modes with the same gain in the MIMO radar system are combined. Among the combinations with the same gain, the mode corresponding to the largest virtual array aperture in the horizontal and elevation directions under that gain is selected. The angles of these two modes are resolved and matched separately, and then combined to achieve the maximum virtual array aperture resolution. Digital beamforming is used to match the angle information obtained under the maximum aperture virtual array in the horizontal and elevation dimensions. This invention can effectively increase the maximum array aperture in the original modes with the same gain by utilizing the complementary effect between different reconfigurable array modes while using virtual array reconfigurable technology or MIMO technology.

The application relates to a fast demodulation system and method for a large-scale microcavity array on a chip, and the system comprises a frequency-sweeping laser, a first fiber coupler, a microcavity array transmission signal arm, an auxiliary interference reference arm, a same-frequency trigger arm and a signal processing device. The first fiber coupler is used for dividing a light source into a first light source and a second light source. The microcavity array transmission signal arm is used for receiving the first light source of the frequency-sweeping laser, and the first light source enters a large-array microcavity sensor device after polarization processing, and is converted into an electric signal after receiving the disturbance of an external sensing signal. The auxiliary interference reference arm is used for receiving the second light source of the frequency-sweeping laser, and two beams of coherent light with opposite phases are obtained after processing the second light source, and then the coherent light is converted into an electric signal. The same-frequency trigger arm is used for transmitting a same-frequency trigger signal emitted by the frequency-sweeping laser. The signal processing device is used for signal acquisition and processing. The application effectively suppresses the frequency-axis distortion and spectral line broadening caused by the frequency-sweeping nonlinearity of the laser, and can be applied to the accurate demodulation of a large-scale, high-Q microcavity sensing array.

The application discloses a method for obtaining and separating a scattering field of a large-scale array antenna, and the steps are as follows: obtaining a radiation field of each unit array of a subarray, and calculating a scattering field of an antenna mode item in each unit array; using the scattering field of the antenna mode item in each unit calculated by a pattern multiplication method to solve a mutual coupling correction matrix; using the mutual coupling correction matrix to correct the scattering field of the structure mode item calculated by the pattern multiplication method; adding the scattering field of the antenna mode item and the scattering field of the structure mode item to obtain a scattering field of the array; equivalently constructing the subarray and performing phase compensation to obtain a scattering field of each unit of the large-scale array antenna; and obtaining a total scattering field of the large-scale array antenna and the scattering field of the total antenna mode item and the total structure mode item through field superposition. The application introduces the mutual coupling correction matrix and the subarray theory, avoids directly performing matrix operation on the large-scale array antenna, improves the calculation speed, and solves the problem that a large amount of calculation time and resources are consumed when a scattering field of the large-scale array antenna is obtained in the prior art.

The invention discloses a region decomposition-based two-dimensional array resistivity inversion method, electronic equipment, a storage medium and a device. The method comprises the steps that area decomposition is conducted on a large array lateral logging response data set based on the layer interface position of a target area, a plurality of sub-areas are obtained, and every three adjacent stratums form one sub-area; the thickness and the center point position of each stratum are calculated, and then the thickness and the center point position of each sub-region are obtained; constructing a one-dimensional inversion model based on the stratum to perform one-dimensional array resistivity inversion; and constructing a two-dimensional inversion model based on the sub-regions to perform two-dimensional array resistivity inversion, and taking a one-dimensional inversion result as an initial parameter value of the two-dimensional inversion model. The method fully considers the influence of radial mud invasion and longitudinal surrounding rock layers, and strengthens the information constraint of the upper and lower well sections, thereby weakening the influence of surrounding rock, guaranteeing the extraction precision of the real resistivity of the stratum, and achieving the rapid and accurate imaging of the two-dimensional profile of the resistivity of the stratum.

The utility model discloses a surface array optical fiber collimator, is constituted by mould pressing lens array, a plurality of pigtail, a plurality of connecting pipe or ridge hole plate, one side of lens array is array convex surface, the other side is a plurality of ridge inclined plane, one side end surface of connecting pipe or ridge hole plate and lens array gluing, the other side end surface and pigtail gluing, since every optical fiber collimator is through the precise light adjustment between pigtail relative to plano-convex lens, and is fixed after the axial transition through connecting pipe or ridge hole plate, can guarantee the mechanical positioning accuracy index of every collimator and the optical performance index in the whole surface array optical fiber collimator, and the quality can be guaranteed, in addition, the utility model has compact structure and low material cost, and easy to assemble, the yield is high, is suitable for building large array.

A conformal array beamforming method based on the maximum SNR criterion comprises the following steps: (1) establishing a global coordinate system model for the conformal cylindrical array; (2) establishing a local coordinate system for each array element using Euler coordinate transformation; (3) calculating the element amplitude gain of each element based on the signal incident angle under the local coordinates and the element radiation pattern; (4) calculating the element activation threshold condition and determining whether the element is activated based on the element activation gain; (5) achieving the maximum SNR array output based on the element activation determination result. This invention can achieve the maximum SNR output of a conformal array of a certain size with incident signals at any angle, and the algorithm is simple. This invention can be applied to fields such as communication and radar.

The invention discloses a satellite infrared multi-probe metadata homogenization method based on variational self-encoding, which comprises the following steps of: acquiring multichannel observation brightness temperature data of a satellite large-array infrared detector, constructing a variational self-encoder model, designing a comprehensive loss function, adopting a dynamic weight scheduling mechanism, gradually adjusting the weight of each loss item in a training process, and carrying out uniformization on the multi-channel observation brightness temperature data of the satellite large-array infrared detector. And carrying out iterative training by adopting Adam and a piecewise learning rate, storing an optimal model, reconstructing observation data by utilizing the trained model, and outputting homogenized multi-detection-element hyperspectral brightness temperature data. The method can automatically extract and learn the complex nonlinear characteristics of the hyperspectral data, has higher accuracy and robustness compared with an empirical correction method, and improves the consistency and stability of the data of the large-array detector; and the method has relatively high expandability and universality.

The invention discloses a memory low-voltage write circuit and method for high-bandwidth magnetic computing and a memory device. The memory low-voltage write-in circuit for high-bandwidth magnetic computing comprises a plurality of memory arrays, a source line multiplexing unit and inter-array buffer stage units, wherein the inter-array buffer stage units are arranged between two adjacent memory arrays; the storage array generates a write-in voltage within a preset low threshold range according to the control signal; the source line multiplexing unit multiplexes the source lines of the two adjacent storage arrays and the write-in driving unit; and the inter-array buffer stage unit generates and outputs a control signal of the next-stage storage array according to the bit line driving signal and the source line driving signal of the previous-stage storage array. Data writing is completed directly through logic voltage, the area overhead of a level converter in a traditional writing circuit is saved, and the problem of insufficient driving caused by parasitism in a large array is solved through the design of the buffer stages between the arrays.

The invention relates to the technical field of sensing product testing, in particular to a super-large array packaging conductivity testing device which comprises a wafer testing table, an open circuit testing plate and a short circuit testing plate, an objective table is installed at the top of the wafer testing table, and a swing arm positioning seat is installed at the top of the wafer testing table and on the back face of the objective table. The outer wall of the swing arm positioning seat is provided with a test probe, the top of the wafer test bench and the back surface of the swing arm positioning seat are provided with a main control unit, and the outer wall of the main control unit is connected with the swing arm positioning seat through a test line. According to the super-large array packaging conductivity testing device, the open circuit testing plate and the short circuit testing plate in the device are used for testing the to-be-tested product, and the problems that an existing testing device and an existing testing method cannot directly point-contact the two ends for measurement, the accuracy of a testing result is poor, the efficiency is low, and the product is prone to being damaged are solved.

The application relates to the technical field of data storage, in particular to an array data storage method, an electronic device and a medium, which comprises the following steps: S1, initializing an array A and recording corresponding default values D in the array A, wherein the total number N of elements in the array A is greater than a preset first threshold value, and the expected total number M of non-default value elements in the array A is less than a preset second threshold value; S2, initializing an empty tree structure T; S3, obtaining an array subscript of a non-default value to be newly added in the array A and a corresponding value; S4, storing the array subscript of the non-default value to be newly added as a key and the corresponding value as a value in a to-be-newly-added node corresponding to the tree structure T, inserting the to-be-newly-added node into the tree structure T according to subscript sequence, and updating the tree structure T; and S5, if all elements in the array A are processed, ending the process, or returning to step S3. The application improves the memory utilization rate of large array data storage.

The utility model discloses an array electro-acupuncture structure, an excitation circuit and medical beauty equipment, relates to the technical field of medical equipment, and discloses the array electro-acupuncture structure comprising a plurality of electro-acupuncture units; each electric needle unit is of a matrix structure composed of a plurality of electric needles, the plurality of electric needles of each electric needle unit are electrically connected, and each of rows and columns of each electric needle unit at least comprises two electric needles; each electro-acupuncture unit is used for sequentially receiving current excitation output energy; the electroacupuncture units are adjacently spliced to form the array electroacupuncture structure, and the array electroacupuncture structure is a matrix structure. A large array electro-acupuncture structure is divided into small electro-acupuncture unit matrixes for excitation, and the electro-acupuncture number of each electro-acupuncture unit is limited to ensure certain area dispersed current. The electric needles in each electric needle unit are electrically connected so as to receive unified current excitation and output energy. Due to the fact that the number of the electric needles excited at the same time is reduced, the difference between the electric needles is reduced, and therefore energy distribution can be more uniform through sequential excitation of the electric needle units.

The application discloses a non-refrigeration infrared focal plane dual-channel column-level readout circuit and method, relates to the technical field of infrared focal plane array detector, and solves the problem of frame frequency reduction of a non-refrigeration infrared focal plane array detector under a large array. The technical scheme is as follows: the circuit comprises a mirror bridge circuit, a pixel array biasing circuit and a pixel array; the mirror bridge circuit is used for providing a bias voltage for the pixel array biasing circuit; the pixel array biasing circuit is used for providing a bias current for the pixel array; the pixel array biasing circuit comprises a first channel-level biasing circuit and a second channel-level biasing circuit; and a microbolometer gating switch is used for changing on-off timing, so that the microbolometer unit needing to be read out sequentially generates a detection output signal through the first channel-level biasing circuit or simultaneously generates a detection output signal through the first channel-level biasing circuit and the second channel-level biasing circuit, and adjustment of the readout frame frequency of the circuit is realized.

The invention belongs to the field of target pose measurement, and particularly relates to a target pose measurement system and method based on curved surface features. The system comprises a laser emission module, a feature identification module and a processing module. The laser emission module and the feature recognition module are arranged towards a to-be-measured curved surface target, and M feature points are arranged on the to-be-measured curved surface target; the laser emission module is used for emitting N non-parallel laser beams to a to-be-measured curved surface target, N laser spots are formed on the to-be-measured curved surface target, and the mass centers of the N laser spots are not collinear; the view field of the feature recognition module covers all different pose envelope ranges of the to-be-detected curved surface target; the receiving end of the processing module is electrically connected with the sending end of the feature recognition module. According to the invention, the measurement range can be expanded through the expansion of the number of laser beams and the field of view of the detector, so that the pose measurement of an ultra-large array target can be realized, and the cost is low.

The invention discloses a channel parameter estimation and positioning method and device for a double-end super-large-scale array, and relates to the technical field of wireless communication and signal processing, and the method comprises the steps: obtaining the observation data of a receiving end; determining a current scene based on the target distance and the Rayleigh distance, the current scene being any one of a near-field scene and a far-field scene; determining a target channel parameter estimation strategy based on the current scene; based on a target channel parameter estimation strategy, processing observation data of a receiving end to obtain a path time delay estimation value; determining a direct path and a non-direct path based on the path time delay estimation value; and positioning a target position based on the direct path and the non-direct path. Through the above mode, the observation signals received by the large-scale array of the receiving end are processed in the combined dimension of the spatial domain and the frequency domain, the angle, the time delay, the gain and the distance information of each path are accurately estimated, and the position of the target is accurately positioned according to the estimated path parameters of the direct path.

The application provides an array antenna and a communication device. The antenna unit of the array antenna comprises a first antenna and a second antenna. The working mode of the first antenna comprises a high-order mode of a first polarization mode and a high-order mode of a second polarization mode, and the working mode of the second antenna comprises a main mode of the first polarization mode and a main mode of the second polarization mode. In this way, by controlling the first antenna and the second antenna to jointly receive signals or transmit signals, the gain of the first antenna in the high-order mode and the gain of the second antenna in the main mode can be combined with each other, which is beneficial to reducing the gain of the grating lobe generated by the array corresponding to the plurality of second antennas when the array works in the main mode, thereby increasing the spacing between the antennas in the array antenna while ensuring the communication performance of the array antenna, and further reducing the layout difficulty of components in the array antenna supporting polarization reconstruction and improving the performance of the array antenna in the polarization reconstruction process.

The invention relates to the technical field of high-brightness laser testing, and discloses a high-speed light beam quality analyzer which is characterized in that a laser power attenuation device, an aberration-free focusing lens, a polarization-independent reflex mirror group, a light shutter, a two-dimensional virtual image phase array etalon group, a large-area-array camera and a residual light receiving barrel are sequentially arranged in the direction of a light path. After a to-be-measured light beam passes through the two-dimensional virtual image phase array device, distances from virtual images on a formed two-dimensional virtual image array to the large-area-array camera are different and meet an approximate arithmetic progression, so that the large-area-array camera can simultaneously measure a plurality of light spots at different transmission distances behind the aberration-free focusing lens; and finally, fitting a hyperbolic curve representing the beam quality through a partition image algorithm so as to obtain the quality of the laser beam to be measured at the current moment. According to the method, a displacement platform does not need to be moved in real time, the measurement speed mainly depends on the optical shutter switching rate, the camera sampling rate and the host calculation speed, and the method has the high-timeliness characteristic of data acquisition and analysis.

This invention discloses an extra-large array-type flange processing equipment, relating to the field of flange processing equipment. It includes a milling machine base, a milling machine body movably mounted on the milling machine base, a mounting seat mounted on the milling machine body, and a milling cutter movably mounted on the mounting seat. It should be noted that, in this embodiment of the invention, when a problem occurs with the milling cutter, a start switch can be triggered, causing four avoidance cylinders to move the clamping plate downwards and disengage from the milling cutter via four lowering rods. This also causes the two shielding side boxes to merge and shield the flange material plate. Therefore, through rapid detection, risk avoidance, and physical shielding, the impact damage to the expensive flange material plate by the milling cutter is prevented to the greatest extent possible. Furthermore, avoiding collisions also protects the expensive milling cutter, reduces damage to key machine tool components such as the spindle and guide rails caused by severe impacts, extends equipment life, reduces maintenance costs, improves the safety of the entire processing process, and reduces the potential for safety accidents.

The application relates to a kind of spaceborne large array high frame frequency short wave infrared detector data acquisition systems, using 1024*512 large array short wave infrared detector, and special collection circuit is designed for 8-way output of 1024*512 large array detector, first, the 8-way signal output by detector is conditioned through analog front-end circuit, after conditioning, 8-way signal is synchronously sampled through three analog-digital sampling chips, to be synchronously input to FPGA circuit, so that FPGA circuit quickly generates frame image. That is, by selecting three analog-digital sampling chips supporting 3-channel sampling, FPGA circuit as master control chip to complete 8-channel simultaneous readout of 1024*512 large array detector, while improving the number of pixels and increasing frame frequency, the volume, weight and power consumption of the spaceborne hyperspectral imager data transmission link are reduced, and the quality of image transmission is effectively guaranteed.

The application provides an airborne single-chip microcomputer fault diagnosis method, and relates to the field of airborne computer software, and comprises the following steps: defining a fault equation model file of the airborne single-chip microcomputer; writing the fault equation model file in an XML format, saving the model file in the XML format as a binary file, generating a fault model binary file, and burning the fault model binary file to the Flash of the single-chip microcomputer; executing the fault model binary file through a preset program in the single-chip microcomputer to obtain an airborne single-chip microcomputer fault diagnosis result. The static part and the dynamic part of the fault equation system are separated, and a method for simulating memory allocation in a large array is introduced, so that the required memory space of the fault equation system is greatly reduced, the airborne single-chip microcomputer with limited storage space and without an operating system and a file system is applicable, and the fault variables and the fault equations in the traditional fault equation system are unified as fault equations, so that the cascade of the fault equations is realized.

The application provides a broadband near-field beam training method, device and medium, and belongs to the technical field of Internet communication transmission. The method comprises the following steps: acquiring a system model of a broadband super-large array communication system; determining a first beam splitting effect of a sparse array in the broadband in a spatial domain and a second beam splitting effect of the broadband in a frequency domain based on the system model; and performing super-resolution broadband near-field beam training based on the first beam splitting effect and the second beam splitting effect. The technical scheme can realize super-resolution broadband beam training with extremely low overhead.

The application discloses a kind of millimeter wave rectangular waveguide slot antenna structure device, including two groups of thinner and parallel first metal plate, second metal plate and two first metal conductive layer with rectangular waveguide transmission line, second metal conductive layer, the first metal plate, second metal plate and first metal conductive layer, second metal conductive layer are sequentially crossed and stacked, the present application provides a new type of rectangular waveguide slot antenna structure device, with cost advantage, can be used for electromagnetic wave emission or reception, or for both, with very good antenna performance, can work at different frequencies, such as 30GHz-300GHz range, but also outside this range, while can be used as independent antenna can also be integrated with other components can also be assembled into larger array with multiple waveguide slot antenna groups.

The invention provides a large-scale programmable metasurface array far-field rapid evaluation method based on subarray partition, which comprises the following steps: modeling array far-field performance as an electromagnetic scattering problem, enabling a controllable device in a metasurface unit to be equivalent to a network port by combining an electromagnetic scattering theory and a microwave network theory, enabling different coding states to correspond to port load impedance, and enabling the network port to be equivalent to the network port. A total scattering field evaluation relational expression for separating a structure scattering field from a mode scattering field is constructed, in order to improve the large-scale array analysis efficiency, a regional solving strategy is adopted, the whole array is divided into a plurality of sub-arrays for high-precision simulation, pre-processing data is generated based on the sub-array result, and the pre-processing data is used for analyzing the large-scale array. Comprising a structure scattering field, a port scattering parameter matrix and a single-port excitation radiation field, so that far-field characteristics in different coding states are quickly calculated, and repeated full-wave solution does not need to be carried out on the whole large array. According to the method, the calculation complexity can be remarkably reduced on the premise that the precision is guaranteed, and efficient and rapid evaluation of the far-field performance of the large-scale programmable metasurface array is achieved.