159 results about "Phase coding" patented technology

The invention provides a civil structure deformation anomaly detection method based on time series data, and relates to the field of civil structure deformation anomaly detection. A disturbance intensity response value, a disturbance curvature and a local disturbance folding feature are constructed, a range adjustment enhancement value is formed by combining a symbol jump mark and a neighborhood disturbance difference value, a latent guide feature is generated based on the range adjustment enhancement value, a disturbance reconstruction feature is constructed through superposition of a diffusion residual error and an asymmetric difference item, normalization mapping is completed to obtain a normalization feature, and the normalization feature is obtained. A disturbance spinor modulation factor is constructed in combination with a nonlinear suppression correlation coefficient, a disturbance spinor tensor is formed through a logarithmic compression channel and a square amplification channel and by applying quadrature phase coding, a tensor potential mapping map is generated under a path coupling and self-coupling mechanism, disturbance energy offset and extreme value deflection are constructed based on the tensor potential mapping map, and disturbance energy offset and extreme value deflection are obtained. And a probability potential index is formed, and civil structure deformation anomaly detection model training is completed based on the probability potential index, so that civil structure deformation anomaly detection is realized.

The invention discloses a communication-detection integrated sonar signal design method and device based on multi-pulse composite modulation, and the method comprises the steps: dividing a total frame period into a detection sub-frame and a communication sub-frame, enabling the detection sub-frame to achieve the high-resolution distance measurement through employing a bidirectional linear frequency modulation (BILFM) signal, a communication sub-frame adopts a multi-frequency multi-phase composite modulation (MTPM) signal to realize high-bit-rate data transmission; after band filtering, orthogonal demodulation, low-pass filtering and down-sampling preprocessing are carried out on detection sub-frame echoes, distance and speed information is extracted by adopting fast-time low-sampling two-dimensional fast Fourier transform (2D-FFT), unambiguous Doppler frequency is recovered by utilizing the Chinese remainder theorem (CRT), and accurate speed measurement of long-distance and high-speed targets is realized; a communication subframe receiving signal is subjected to IQ demodulation after down-conversion, Costas loop carrier synchronization and matched filtering, and multi-frequency multi-phase coded data are extracted. According to the method, the time-frequency collaborative design of detection and communication is realized, the distance resolution and the speed measurement range are considered, and the signal bandwidth utilization rate and the underwater information transmission reliability are remarkably improved while the system complexity is kept low. The device comprises a processor and a memory, and an executable program for implementing the method is stored in the memory. The technology can be widely applied to the fields of unmanned underwater vehicles, ocean monitoring, underwater sensing networks and the like.

The invention discloses a phase coding-based non-third-party quantum multi-party privacy set intersection method and application, and belongs to the technical field of quantum privacy calculation. An existing quantum private set intersection scheme mostly aims at a two-party scene or depends on a third party to realize confidential intersection, and potential safety hazards are easily caused by constructing a trusted third party in practical application. In order to solve the problem, the invention provides a quantum intersection protocol for multiple participants, and the protocol effectively realizes intersection calculation of private sets of the participants through a quantum state phase encoding technology. And meanwhile, comprehensive correctness and security analysis is performed on the protocol, and the feasibility and security of the protocol are verified through a Qiskit simulation protocol core process. The method not only can efficiently solve the problem of intersection of multi-party private sets and obtain public elements on the premise of protecting the privacy of each party, but also can be used as a basic module in a multi-party cooperative computing application scene, and is wide in application range.

The invention relates to a liquid crystal phased array dynamic star finding control method based on holographic phase coding. The method comprises the following steps: acquiring an expected beam pointing angle of a target satellite relative to an antenna array; generating a two-dimensional phase matrix suitable for a liquid crystal phased array based on the expected beam directional angle; performing temperature compensation on the two-dimensional phase matrix, converting the two-dimensional phase matrix into a digital driving level, and loading the digital driving level to a liquid crystal driving circuit; a radio frequency beam pointing to the expected beam pointing angle is formed through radiation of the liquid crystal phased array antenna panel; and beam pointing errors are detected in real time according to downlink signal characteristics and are compensated. The liquid crystal phased array dynamic star finding control method based on holographic phase coding shows remarkable technical progress and practical advantages in multiple aspects; according to the method, a high-performance and high-reliability dynamic beam pointing system is constructed through key technologies such as holographic phase coding, real-time temperature compensation, high-speed calculation and closed-loop feedback, and the method is particularly suitable for high-dynamic scenes such as high-speed mobile carriers and low-orbit satellite communication.

The invention belongs to the technical field of data processing and analysis, and particularly relates to a geomagnetic and inertial navigation fused glasses guide direction identification and content triggering system, which comprises a sensing compensation component, a calculation storage component, a guide resource component and a display component, the sensing compensation assembly comprises an inertial measurement unit, a geomagnetic sensor, an active magnetic compensation coil and a coil driving module; the calculation storage assembly comprises a control processor and a memory, and the control processor is used for driving the active magnetic compensation coil to obtain a coil compensation geomagnetic vector according to a phase coding zero-returning sequence, executing attitude propagation based on the inertial measurement unit, and executing course updating on the coil compensation geomagnetic vector based on Huber anti-outlier loss to obtain a head attitude. According to the invention, the influence of magnetic disturbance and attitude jitter on direction identification and content triggering can be effectively reduced, and the stability, consistency and practicability of the glasses guide system in a real use scene are improved.

The invention discloses a phase regulation curved surface conformal active metasurface, and relates to the technical field of metasurface design, a metasurface unit is composed of a metal layer and a dielectric layer, the metal layer comprises a metal structure layer and a metal backboard layer, and the dielectric layer comprises an F4B dielectric substrate and an ABS dielectric layer. The metasurface unit is sequentially provided with a metal structure layer, an F4B dielectric substrate, an ABS dielectric layer and a metal backboard layer from top to bottom, and the metal structure layer is externally connected with a feed structure by adopting a circular through hole technology and is used for adjusting the voltage at the two ends of the variable capacitance diode. According to the phase regulation curved surface conformal active metasurface, the 3D printed curved surface substrate is combined with the voltage programmable 2-bit phase code, so that the metasurface has high adaptability to the curved surface structure, and electromagnetic wave dynamic regulation and control and vortex wave generation can be carried out within the frequency band of 9.3 GHz to 10.5 GHz and within the angle range of 0 degree to 50 degrees.

The application provides a remote acoustic signal pickup method and system based on phase coding microwave sensing, comprising: constructing a phase coding matrix, and performing phase shift control on the transmission signals of multiple transmission antennas; controlling the multiple transmission antennas to simultaneously transmit a linear frequency modulation continuous wave signal, so that the main lobe of a synthesized beam is directed towards the direction of a to-be-detected acoustic source or the direction of a target medium; using one or more receiving antennas to receive echo signals of the acoustic source target, to obtain a corresponding number of baseband signals; performing acoustic vibration phase demodulation on the corresponding number of baseband signals, to extract vibration information of the surface of the medium target caused by the vibration information of the acoustic source or caused by the excitation of the acoustic wave; and reconstructing the acoustic signal, to realize remote acoustic pickup. The application overcomes the problems of weak echo signals, low signal-to-noise ratio, large adjacent target interference and low quality of reconstructed acoustic signals in remote acoustic pickup, and improves the signal-to-noise ratio and sensing distance of remote acoustic pickup.

The application discloses a kind of light field regulation detection method and device based on computing spectral reconstruction, belong to spectral analysis technical field.The method is by introducing medium-metal composite nanostructure, integrates metal nanoisland array and silicon nitride nanocolumn array on quartz substrate, realizes electric field enhancement using the local surface plasmon resonance effect excited by metal nanoisland array, simultaneously realizes wide spectral range phase coding by medium nanocolumn array;Super surface chip is integrated with single point detector, combines pre-calibrated super surface sensing matrix A and enhancement factor matrix E, and reconstructs spectrum using compressed sensing or Tikhonov regularization algorithm.The application keeps the advantages of miniaturization and no moving parts, realizes directional high sensitivity detection to weak signal, and signal-to-noise ratio is improved.

The application discloses a terahertz metasurface reflection unit based on a MEMS switchable delay line, and belongs to the field of radio frequency front-end devices.The unit adopts a sandwich structure of upper and lower glass substrates and a middle bonded metal surface, and a metal radiation patch, a phase delay line and a MEMS switch are integrated on the upper surface.The core is to control the on-off state of the phase delay line through the MEMS switch: when the switch is turned off, the unit is in a reference electrical length;when the switch is turned on, the current path is lengthened, so that the reflection phase lags by about 180 degrees, thereby realizing 1-bit phase coding.The design ingeniously combines the MEMS switch and the delay line, has the advantages of low driving voltage, low reflection loss and high phase control precision in the terahertz frequency band, and provides a feasible hardware solution for the practical application of a reconfigurable intelligent surface in a terahertz communication system.

The embodiment of the invention is suitable for the technical field of communication, and provides a phase encoding method and device and communication equipment, and the method comprises the steps: determining the number of a plurality of bits needed for encoding a plurality of phases according to the plurality of phases to be encoded; generating a first-order term and a high-order term of a plurality of bits; based on the multiple phases, the first-order term and the high-order term, a bit matrix is constructed, and the bit matrix is formed by combining multiple values of multiple bits; calculating a plurality of coding coefficients according to the bit matrix and the plurality of phases; a plurality of phases are encoded using a plurality of encoding coefficients. By the adoption of the method, redundant codes generated in the coding process can be reduced, and then the solving speed and quality of an optimization algorithm are improved. The method can be applied to any coding process in which a coding object is a discrete value.

The application discloses a kind of asymmetric color image optical encryption methods based on generalized singular value decomposition, including encryption process and decryption process, encryption process: asymmetric optical encryption system of color image, the technical scheme adopted is, in encryption system, a kind of double random phase encoding encryption scheme based on generalized singular value decomposition is designed, color image is first encoded into complex matrix, the complex matrix obtained is modulated with phase plate by generalized singular value decomposition, then encryption is carried out in optical Fourier transform domain using phase truncation technique, finally the ciphertext is received by charge coupled device.The application mainly aims at the problem that existing asymmetric encryption system based on phase truncation cannot resist special attack, a kind of modulation method based on generalized singular value decomposition is designed to image and random phase plate, the encryption algorithm can realize color image encryption, effectively resist shear attack, noise attack, chosen-plaintext attack and special attack.

This invention relates to a sensing-integrated waveform design method based on OFDM time-frequency domain phase coding, belonging to the field of wireless communication technology. In this method, the transmitting end generates a complementary Gray sequence and a pseudo-random sequence. These two sequences are then divided into blocks in the frequency domain according to their indices and phase-coded to generate a sensing waveform. A communication signal is generated through an OFDM system. The frame header of the sensing waveform is aligned with the start position of the SSB of the communication signal to generate a sensing-integrated waveform. The time slot of the transmitted communication signal is used; this waveform is the result of multiplying the communication waveform and the sensing waveform in the time domain; otherwise, the waveform is the sensing waveform. The receiving end shares the synchronization signal block and the sensing waveform. The SSB portion of the bandwidth signal is extracted from the received echo signal to estimate the time-frequency, and the echo signal is compensated. The sensing waveform is then separated from the compensated signal to reconstruct the communication signal. The waveform generated by this invention can effectively eliminate spurious peaks in the OFDM waveform, improving the sensing accuracy of the waveform without sacrificing communication performance.

The invention discloses a logistics scheduling management method based on an ant colony algorithm. The method comprises the following steps: constructing a logistics network model constrained by a capacity time window; carrying out ant colony search to generate a scheduling scheme set and carrying out local modeling to obtain a scheduling constraint manifold; converting the scheduling scheme into a vehicle event graph and introducing a time phase to obtain an event phase code; defining a manifold projection operator on the scheduling constraint manifold, mapping an event phase code into a feasible code, and setting a water wave parameter according to a difference value; a water wave model with event phase codes as individuals is constructed, candidate codes are generated through translation, torsion and event subgraph reconnection, and projection is feasible; constructing a cost field and a risk field according to the transportation cost and the time window default risk, and updating event phase codes and ant colony parameters according to a gradient; and when the model converges, outputting a logistics scheduling scheme and generating a vehicle warehouse instruction. Scheduling constraint manifold and water wave optimization are introduced on the basis of ant colony search, and cost and risk are balanced under capacity constraint.

The application relates to a radio frequency coil design method for transmit array spatial encoding imaging, and belongs to the technical field of magnetic resonance imaging. In view of the problems of low single-dimension coding efficiency, strong coupling interference between coils and nonlinear phase gradient of a traditional TRASE technology, axial and radial coding coils are designed based on a target field method and a magnetic dipole method, two-dimensional radio frequency phase coding is realized through reverse current solenoid decoupling combination, and excitation and signal receiving are realized in combination with a saddle coil. Through optimization of the coil structure and decoupling design, the technical scheme achieves multi-dimensional efficient coding, high-precision phase gradient, strong anti-interference and system light weight, and is suitable for the portability and dynamic monitoring scene of low-field magnetic resonance.

This invention provides a three-dimensional measurement method for the surface of a moving object on a production line based on phase-shifting profilometry. Employing a three-dimensional vision measurement system composed of a projector and a camera, and based on the measurement principle of phase-shifting profilometry, the method analyzes the phase error caused by the motion of the measured object and proposes a three-dimensional measurement method for the surface of a moving object that does not require phase error correction. By setting the installation position and angle of the projector and camera, the phase encoding direction in the projected stripe pattern is perpendicular to the direction of motion of the measured object, thereby eliminating the phase error caused by motion. This allows the three-dimensional surface measurement results of the measured object under motion conditions to essentially achieve the measurement accuracy of the measured object under static conditions, realizing high-precision online real-time measurement of the surface three-dimensional morphology of moving objects on actual production lines.

The invention discloses a composite modulation signal blind identification method based on time-frequency analysis, which comprises the following steps of: firstly, judging and classifying input pulse signals, and then respectively carrying out identification and parameter estimation on determined signal types. According to the scheme, down-conversion analysis processing, signal time-frequency analysis processing and signal classification identification decision processing are firstly carried out on AD sampling intermediate frequency data sent by a digital signal processing board FPGA to obtain an identification result of a radar signal intra-pulse modulation type, and then corresponding parameter estimation is carried out according to the radar signal intra-pulse modulation type. According to two composite modulation styles of frequency coding and linear frequency modulation combination and frequency coding and two-phase coding combination, on the basis of time-frequency parameter characteristics of various composite modulations, related characteristic parameters are accurately extracted, a modulation type identification process is constructed, and time-frequency analysis is performed on radar signals through fast Fourier transform and phase correlation, so that the identification accuracy of the radar signals is improved. And furthermore, intra-pulse parameter estimation is accurately carried out on the radar signal.

The application relates to a printed circuit board solder resist method, which realizes multi-dimensional physical mark embedding and automatic parameterized layout design by presetting distinguishable micro passive synchronous marks in the PCB design stage and combining optical phase coding. Before and after exposure, high-speed imaging detection and adaptive optical algorithms are used to collect and normalize the phase response of the multi-layer synchronous marks, extract multi-dimensional alignment reference features, establish a distributed alignment error model, distinguish the overall rigid displacement and local stress deformation, and based on the model, real-time correct the exposure equipment parameters to realize spatial error compensation.

The invention relates to the technical field of power equipment on-line monitoring and fault diagnosis, and discloses a GIL temperature distribution detection device based on double optical comb coding BOTDA, which comprises a GIL temperature sensing optical fiber, a double optical comb signal generation assembly, an optical transmission and detection assembly and an intelligent control and calculation system. The sensing optical fiber is attached to the surface of the GIL through a suspension type loose tube structure, and stress cross sensitivity is eliminated. The double-optical-comb assembly generates a pumping and detection optical comb loaded with random phase codes, and the peak-to-average power ratio is reduced to suppress modulation instability. The transmission assembly is matched with distributed Raman amplification to realize long-distance bidirectional injection, and optical downsampling is realized by using an optical comb beat frequency effect. And the control system executes closed-loop gain adjustment according to a comparison result of the detection power and a nonlinear threshold value, and calculates the temperature through space-time mapping. According to the invention, the contradiction between the signal-to-noise ratio and the nonlinear effect in long-distance sensing is solved, and high-precision and rapid GIL whole-line temperature monitoring is realized.

The invention provides a photoelectric oscillator capable of being used for generating tunable phase coding microwave pulses. The photoelectric oscillator is composed of a tunable laser, a polarization controller, a phase modulator, a dual-drive Mach-Zehnder modulator, an optical circulator, a phase shift fiber bragg grating, a single-mode fiber, a photoelectric detector, an electric amplifier, a microwave source and an arbitrary waveform generator. The invention develops the active mode-locked photoelectric oscillator for generating the phase-coded microwave pulse signal, which is simple in structure and good in tunability. On the basis of an active mode-locked optoelectronic oscillator, a phase modulator is driven by a phase coding signal, so that the duration of each voltage polar code is kept consistent with the loop delay of the optoelectronic oscillator, and a phase-coded coherent microwave pulse sequence is generated. The signal has the advantage of large time bandwidth product, can give consideration to the detection distance and distance resolution of the radar, and has the characteristics of interference resistance, low interception and the like.

The invention provides a high-speed multispectral parallel bionic visual imaging method and system and a medium, and the method comprises the steps: simulating a mantis shrimp compound eye structure based on a microlens array, and receiving incident light in multiple directions; incident light with different central wavelengths is selectively transmitted in different channels, filtered light signals are received based on a photosensitive array, and a multi-channel image is generated; performing time sequence sampling based on the phase encoder to obtain a multi-frame sampling result on a time domain, and capturing motion information of the target based on the multi-frame sampling result; performing multi-channel image fusion based on a neural mimicry neural network, performing motion vector estimation based on operation information of a target, and outputting a fused image frame and a motion vector diagram; by simulating a mantis shrimp compound eye structure, parallel sensing of multi-channel spectrums is achieved, multi-dimensional sensing data are encoded and fused, and the method is widely applied to the fields of automatic driving, unmanned aerial vehicle navigation, complex environment sensing and the like and has the advantages of high-speed response, weak light adaptation and high-precision recognition.

The invention discloses a lumbar vertebra scanning processing method and device, a storage medium and electronic equipment, and the method comprises the steps: obtaining a sagittal three-dimensional image of a lumbar vertebra, carrying out the three-dimensional segmentation of the lumbar vertebra and an intervertebral disc in the sagittal three-dimensional image, and obtaining a lumbar vertebra segmentation result and an intervertebral disc segmentation result; inputting the lumbar vertebra segmentation result and the intervertebral disc segmentation result into a preset anatomical key point detection network for anatomical key point identification to obtain an anatomical key point set, and constructing a local vector space based on the anatomical key point set, according to a preset magnetic resonance lumbar vertebra scanning constraint rule, target scanning positioning parameters corresponding to multiple target scanning orientations are matched in the local vector space, and the target scanning positioning parameters at least comprise a phase coding direction, a frequency coding direction, a slice selection direction and a slice center position; and controlling magnetic resonance equipment to execute lumbar vertebra scanning based on the target scanning positioning parameter. The lumbar vertebra scanning parameter planning can be automatically completed.

This application discloses a method, apparatus, device, and storage medium for feature wave detection of electrocardiogram (ECG) signals. The method includes: acquiring an ECG signal; extracting waveform features from the ECG signal using a feature extraction module of a preset feature wave detection model to obtain a waveform feature map; mapping the waveform feature map to a continuous phase space using a phase encoding module of the feature wave detection model to obtain a phase feature map; and performing feature wave detection on the phase feature map using the feature wave detection module of the feature wave detection model to obtain a feature wave detection result. This achieves modeling of phase relationships, avoids discrete points, and does not slow down the algorithm's running speed.

A system and method for sidelobe suppression in phase-encoded Doppler LIDAR to support the operation of a vehicle includes determining a se- quence code that is indicative of a sequence of phases for an optical signal; mod- ulating an optical signal based on the sequence code to produce a phase-encoded optical signal; transmitting the phase-encoded optical signal to an environment; receiving, from the environment, a returned optical signal in response to transmit- ting the phase-encoded optical signal; generating, based on the returned optical signal, an electrical signal; and determine a Doppler frequency shift in the returned optical signal.

An imaging device is presented for use in an imaging system capable of improving the image quality. The imaging device has one or more optical systems defining an effective aperture of the imaging device. The imaging device comprises a lens system having an algebraic representation matrix of a diagonalized form defining a first Condition Number, and a phase encoder utility adapted to effect a second Condition Number of an algebraic representation matrix of the imaging device, smaller than said first Condition Number of the lens system.

The invention discloses a digital holographic lithography method based on light source phase coding and binary mask collaborative optimization, which comprises the following steps: 1, applying preset light source phase coding to an incident light field, and carrying out collaborative modulation with a binary amplitude mask to obtain a mask transmission light field; 2, propagating the transmission light field to a wafer plane by adopting an angular spectrum propagation model to obtain a wafer surface reproduction light field; 3, constructing a joint optimization function of the wafer surface light field intensity and a target graph, and carrying out collaborative optimization on a light source phase encoding parameter and a mask binarization structure parameter; and 4, performing holographic photoetching exposure and development based on an optimization result, and forming a high-resolution angular interference pitch line pattern on the surface of the wafer. By means of light source-mask collaborative coding, a traditional complex three-dimensional mask is simplified into a binary amplitude mask, the mask machining difficulty and manufacturing cost are reduced, meanwhile, the wafer surface angular resolution is effectively improved, and a feasible technical scheme is provided for a high-bandwidth digital holographic photoetching system.

The application relates to a holographic phase coding-based liquid crystal phased array dynamic satellite searching control method, which acquires an expected beam pointing angle of a target satellite relative to an antenna array; generates a two-dimensional phase matrix suitable for a liquid crystal phased array based on the expected beam pointing angle; performs temperature compensation on the two-dimensional phase matrix and converts the two-dimensional phase matrix into digital driving levels, which are loaded to a liquid crystal driving circuit; forms a radio frequency beam pointing to the expected beam pointing angle through a liquid crystal phased array antenna panel; and detects a beam pointing error in real time according to a downlink signal characteristic and performs compensation. The holographic phase coding-based liquid crystal phased array dynamic satellite searching control method exhibits significant technical progress and practical advantages in multiple aspects; the method constructs a high-performance and high-reliability dynamic beam pointing system through key technologies such as holographic phase coding, real-time temperature compensation, high-speed calculation and closed-loop feedback, and is particularly suitable for high-dynamic scenes such as high-speed mobile carriers and low-orbit satellite communication.

The invention belongs to the technical field of metasurfaces and plane lenses, and particularly relates to a focusing metasurface lens with an anti-shielding function, the lens is composed of 40 * 40 units with the period of 7.5 mm, each unit comprises a top layer metal annular patch, a dielectric layer and a bottom layer metal patch, the relative dielectric constant of a dielectric substrate is 2.65, and the relative dielectric constant of the dielectric substrate is 2.65. The units realize anisotropic response through circumferential notch design, a stable 180-degree phase difference is formed by adopting a mirror image inversion structure, the 1-bit phase modulation requirement is met, the array performs phase coding in the radial direction according to an Airy function, and a hollow annular layout is adopted, so that the self-bending and self-repairing characteristics of Airy beams are effectively utilized, and the phase modulation efficiency is improved. The electromagnetic wave can bypass physical shielding of an axis area, field intensity reconstruction is realized at a set focus, and the design can remarkably improve focusing gain and energy recovery capability of a system in a shielding environment while maintaining high cross polarization conversion efficiency in Ku frequency band application of 13GHz and the like.

The application belongs to the technical field of terahertz pulse source generation, and provides a patterned wave front regulation method of a terahertz spin emitter. According to the patterned design, the method arranges a plurality of sequential terahertz spin film units and a plurality of reverse sequential terahertz spin film units in the terahertz spin emitter in space to obtain a terahertz light beam with a desired shape, realize spatial phase coding of the terahertz light field, and thus complete wave front regulation. Compared with the prior art, the application has the advantages of strong operability, wide applicability, low cost and the like.

The invention discloses a deception jamming method and device for an azimuth phase coding SAR (synthetic aperture radar), and belongs to the technical field of electronic support system synthetic aperture radar countermeasure. The method comprises the following steps: intercepting an SAR signal, carrying out two-dimensional structured phase stripping by constructing an inverse distance modulation operator and an inverse azimuth modulation operator, and estimating to obtain an azimuth phase sequence; carrying out complex domain differential operation on the estimated azimuth phase sequence, constructing a phase consistency measurement index and minimum consistency order mapping, and identifying a coding structure of the phase consistency measurement index and the minimum consistency order mapping; constructing a linear least square problem based on an identification result, and reconstructing an azimuth phase sequence; and performing phase consistent modulation including convolution modulation on the intercepted signal to generate a deception jamming signal. According to the method, complete matching of the interference signal and the SAR receiving filter is realized, and effective deception interference can be implemented on a new system SAR adopting random, primary, secondary and grouped phase coding.

The application discloses a radar deception jamming generation method based on time domain coding metasurface phase coding, and comprises the following steps: setting the code length of an intra-pulse phase coding sequence, setting a plurality of coding modulation phase differences according to the time domain coding metasurface phase modulation capacity, and designing a time domain coding metasurface phase modulation function according to the set code length and the plurality of coding modulation phase differences; coding the plurality of coding modulation phase differences to obtain a coding set, initializing the intra-pulse phase coding sequence according to the coding set to obtain an initial intra-pulse phase coding sequence; setting a jamming position, and optimizing the initial intra-pulse phase coding sequence by using an optimization algorithm to obtain an optimal intra-pulse phase coding sequence; calculating an optimal coding modulation phase difference sequence according to the optimal intra-pulse phase coding sequence, and modulating a radar echo signal according to the time domain coding metasurface phase modulation function corresponding to the optimal coding modulation phase difference sequence to realize the deception jamming of the radar. The application can realize the deception jamming of the radar at any position.