96 results about "Wave vector" patented technology

The invention provides a deep frequency shift super-resolution microscopic imaging chip and a deep frequency shift super-resolution microscopic imaging system for omni-directional ultra-high wave vector illumination, and belongs to the technical field of optical super-resolution microscopy. The chip comprises a substrate plated with an adhesion layer and multiple layers of films on the adhesion layer, and sub-wavelength-scale circular ring gratings are engraved on the substrate and the adhesion layer; exciting light enters the circular ring grating through the substrate, and evanescent waves of ultrahigh wave vectors in all directions are generated through the circular ring grating. The evanescent waves are coupled to the upper surface through the multi-layer thin film to excite surface plasmons with ultrahigh transverse wave vectors in the corresponding direction, and the surface plasmons are used for carrying out all-directional ultrahigh wave vector illumination and deep frequency shift super-resolution microscopic imaging on a sample placed on the upper surface of the multi-layer thin film. The system comprises an excitation module, a deep frequency shift super-resolution microscopic imaging chip for omni-directional ultra-high wave vector illumination, an imaging module and an excitation control and image acquisition module. According to the invention, omni-directional ultra-high resolution imaging of a complex fine structure sample can be realized, so that application requirements in related fields can be met.

The invention discloses a wide temperature range compensation method for resistive current of a lightning arrester, which belongs to the technical field of online monitoring of power equipment, and comprises the following steps: acquiring waveform data under a reference low-temperature working condition, and establishing an initial capacitive harmonic base; acquiring working condition data at any temperature in real time, performing harmonic decomposition, and analyzing to generate a nonlinear distortion feature vector; dynamically correcting the initial base by using the feature vector, and carrying out subtraction operation on the total current harmonic wave to obtain a final resistive current harmonic wave vector; and reconstructing an instantaneous resistive current waveform through inverse transformation and calculating a characteristic value. According to the technical scheme, the initial capacitive harmonic wave base is established, the nonlinear distortion feature vector is generated based on the harmonic distortion of the real-time working condition quantification temperature and valve plate nonlinear coupling, and dynamic feedback correction is conducted on the base, so that the real resistive current waveform in the wide temperature range can be accurately separated and reconstructed, and the accuracy of the real resistive current waveform in the wide temperature range is improved. And the accuracy and reliability of lightning arrester state evaluation are improved.

The invention belongs to the technical field of seismic exploration, and particularly discloses an elastic wave vector seismic exploration data static correction method, which comprises the following steps: S1, establishing a longitudinal wave micro-logging surface velocity model; s2, establishing a three-component micro-logging shear wave surface velocity model; s3, performing low-frequency static correction on the longitudinal wave seismic data; s4, performing low-frequency static correction on the transverse wave seismic data; s5, performing low-frequency static correction on the converted wave seismic data; s6, calculating residual static correction values of shot points and detection points of the longitudinal wave field, the converted wave field and the transverse wave field; and S7, calculating total static correction values of shot points and detection points of the longitudinal wave field, the converted wave field and the transverse wave field. According to the method, the static correction problem of various wave field seismic data in elastic wave vector seismic exploration is effectively solved, and the calculation efficiency and the imaging precision are improved. The method is suitable for static correction of seismic exploration data.

The invention discloses a real-time rendering method and system for physical simulation water surface waves, and the method comprises the following steps: constructing a generative adversarial network, obtaining a wave vector and an environment parameter variable of the waves, inputting the environment parameter variable into the pre-constructed generative adversarial network, and calculating the height of the waves through a Tessendorf method; calculating wave displacement through Fourier transform and inverse transform in a frequency domain based on the wave vector; calculating the velocity complex amplitude of the corresponding wave based on the wave vector, introducing a micro-scale vortex velocity field based on a particle system, and calculating the wave velocity based on the velocity complex amplitude and the micro-scale vortex field; and based on the wave height, the wave displacement and the wave speed, performing water surface wave rendering by adopting multi-cascade dynamic. According to the method, the physical rationality and visual authenticity of water surface wave simulation are improved, and water body physical simulation is promoted to develop from visual driving to the fusion direction of physical driving and data driving.

The invention belongs to the technical field related to structure optimization design, and discloses a topological optimization method and device for a metamaterial microstructure capable of bearing a band gap, and the method comprises the steps: (1) respectively defining an interpolation penalty coefficient of a Young modulus for the homogenization analysis of the microstructure and the band gap problem of an energy band structure according to the performance analysis of the microstructure, calculating an interpolation penalty coefficient of the mass density; (2) carrying out homogenization analysis of the microstructure based on dynamics to obtain equivalent physical property parameters and determine equivalent material modulus; (3) defining an irreducible first Brillouin region wave vector path of the microstructure based on the geometric symmetry constraint of the microstructure, and further calculating a band gap quality factor between adjacent energy band curves of the microstructure; and (4) establishing a topological optimization model which takes the equivalent modulus as a grading constraint and takes band gap quality factor maximization as a target, and performing iterative optimization based on the topological optimization model to obtain an optimal microstructure configuration. According to the invention, efficient and stable design of the microstructure is realized.

The invention discloses a broadband nonlinear frequency converter which comprises a silicon dioxide coating layer, an x-cut lithium niobate film layer, a silicon dioxide buffer layer and a silicon substrate layer from top to bottom, the x-cut lithium niobate film layer is provided with a weak bending ridge waveguide, and the bending angle of the weak bending ridge waveguide is not larger than 5 degrees. According to the invention, birefringence phase matching is realized on the lithium niobate film in a weak bending waveguide form, so that broadband second harmonic generation, birefringence phase matching wavelength and matching angle correlation are realized, and an included angle between a wave vector of transmitted fundamental frequency light and a crystal optical axis is continuously and slightly changed through the weak bending film, so that the broadband second harmonic generation is realized. Therefore, birefringence phase matching of different wavelengths can be realized at different matching angles, and the purpose of broadband matching is achieved.

The invention relates to the technical field of ray tracing, in particular to a method for tracing non-sequence polarized rays in a birefringent medium, which comprises the following steps of: firstly, determining parameters of the birefringent medium and parameters of incident light, secondly, iteratively calculating wave vectors and refractive indexes of transmission light and reflected light generated after the incident light enters the birefringent medium, then, the polarization states of the transmission light and the reflected light are calculated through singular value decomposition, the propagation direction, the Fresnel amplitude coefficient, the transmissivity and the reflectivity of the transmission light and the reflected light are further calculated, the propagation process and the optical path of the incident light are finally obtained through calculation, and ray tracing is completed. According to the method, the non-sequence polarized light can be accurately tracked in the birefringent medium, the universality is high, and the tracking result accuracy is high.

The invention belongs to the field of geophysical exploration, and relates to a two-dimensional SHTE mode seismic wave field time domain numerical simulation method based on high-order difference, which comprises the following steps of: subdividing a seismic wave calculation region by adopting a staggered grid, and discretizing an eight-order precision difference space of a seismic wave variable based on a time domain finite difference method to obtain a discrete format of a time domain partial derivative term; region division: discretizing the spatial difference of the electromagnetic wave variable to obtain a discrete format of a spatial partial derivative term; substituting the discrete format into a time domain control equation of a two-dimensional SHTE mode wave to respectively obtain a finite difference iteration format of a seismic wave vector and a finite difference iteration format of an electromagnetic wave vector, and loading a seismic source; iterating once by using the finite difference iteration format of the seismic wave vector, and then iterating the finite difference iteration format of the electromagnetic wave vector for multiple times; and repeating until the number of iterations of the seismic waves is reached. According to the invention, two-dimensional SHTE mode seismic wave field time domain numerical simulation based on a high-order difference method can be realized.

The invention discloses a tunable band elimination filter based on a quantum well structure photon time crystal and a method. The tunable band elimination filter comprises the quantum well structure photon time crystal; the quantum well structure photon time crystal comprises a first photon time crystal section, a time domain quantum well section and a second photon time crystal section which are connected in sequence; when an electromagnetic signal is propagated, the electromagnetic signal sequentially passes through the first photon time crystal section, the time domain quantum well section and the second photon time crystal section, so that a stable band gap region and a controllable resonance response are formed in a momentum space; a fitting relation between a local state equivalent wave vector and a time structure parameter is established by adjusting a time section proportion parameter and a refractive index contrast ratio in a quantum well structure photon time crystal, so that the local state quantity and momentum position of an electromagnetic signal are regulated and controlled; and frequency spectrum regulation of the electromagnetic signal is realized through a corresponding relation between the momentum space and the frequency domain space. The frequency spectrum regulation and control precision and the system stability are improved.

The present invention relates to a Raman light state-selective interferometer device for an atomic interference gyroscope. A polarization beam splitter prism is used to spatially split the Raman interference light, so that the two Raman interference light beams share a Raman interference collimator, thereby reducing the number of collimators. A triangular reflecting prism is used to allow the Raman state-selected light and the Raman interference light to share a polarization beam splitter prism, resulting in a compact structure and space-saving, which can effectively reduce the size of the atomic interference gyroscope device. A large flat reflector with a good surface shape is used to replace a traditional plurality of independent reflectors, thereby solving the problem that the atomic interference gyroscope has a high requirement for the parallelism of the effective wave vectors between the two Raman light beams, which makes the assembly and adjustment difficult.

The present invention relates to the technical field of ray tracing, specifically providing a method for tracing non-sequential polarized rays in a birefringent medium. First, the birefringent medium parameters and incident light parameters are determined. Next, the wave vectors and refractive indices of the transmitted and reflected light generated after the incident light enters the birefringent medium are iteratively calculated. Singular value decomposition is then used to calculate the polarization states of the transmitted and reflected light. The propagation directions, Fresnel amplitude coefficients, transmittances, and reflectances of the transmitted and reflected light are further calculated. Finally, the propagation process and optical path length of the incident light are calculated, completing the ray tracing. The method can accurately trace non-sequential polarized rays in a birefringent medium, has strong versatility, and provides highly accurate tracing results.

This application provides a wavefield decomposition method, apparatus, device, and medium based on wavefront phase direction, belonging to the field of geophysical exploration technology. The method includes: determining a wavefield decomposition operator based on the original wavefield and Thomsen parameters; the wavefield decomposition operator is a first-order pseudo-Helmholtz decomposition operator based on the wavefront phase direction; determining the wavenumber domain wavefield obtained after transforming the original wavefield to the wavenumber domain; performing computational processing based on the wavenumber domain wavefield and wavenumber, followed by inverse Fourier transform to obtain multiple intermediate quantities constituting an auxiliary wavefield; determining the auxiliary wavefield based on the multiple intermediate quantities and Thomsen parameters through an auxiliary wavefield expression; and performing wavefield decomposition based on anisotropic wavefield decomposition formula to achieve P-wave and S-wave separation, obtaining the P-wave and S-wave wavefields. This method not only achieves P-wave and S-wave vector wavefield separation and reduces imaging crosstalk noise, but also reduces computational load, balancing wavefield decomposition effect and computational efficiency.

The invention belongs to the technical field of three-dimensional reconstruction, and relates to an image rendering method and system based on cosine modulation Gaussian kernel representation, and the method comprises the steps: collecting a target image, inputting the target image into a sputtering model, and obtaining a rendered image under the visual angle of a target camera; the sputtering model is obtained through training of a training set; the training set comprises original images and camera parameters corresponding to the original images; the step of obtaining the rendered image under the visual angle of the target camera comprises the steps that a corresponding cosine modulation Gaussian kernel, namely a logic Gaussian primitive, is established for each sparse point in the target image, each logic Gaussian primitive is split into a plurality of standard Gaussian sub-primitives according to a wave vector, and the target image under the visual angle of the target camera is rendered. According to the method, the high-frequency detail expression capability of three-dimensional Gaussian sputtering can be improved.

The invention provides an acoustic imaging system and method for an underwater target, and the system comprises a transducer which is used for transmitting a first sound wave signal to an underwater target object, so that the first sound wave signal is reflected at a first position, and an echo signal is formed; the laser sensing device is used for emitting a laser beam and determining echo wave vector information of an echo signal based on first phase information of the laser beam under the influence of the echo signal; and determining normal information at the first position according to the first sound wave vector information and the echo vector information of the first sound wave signal so as to form acoustic imaging of the underwater target object. Vector information of the normal vector is fused into acoustic imaging, high-quality imaging is achieved, the precision of the wave vector information of the echo signal also meets the requirement of high-resolution acoustic imaging, and the acoustic imaging effect can be effectively achieved especially in underwater long-distance and small-target imaging detection scenes.

The invention relates to a device for non-destructive testing of mechanical parts made of polycrystalline material, said device comprising: - an ultrasonic probe (1) comprising a two-dimensional array of transducers capable of transmitting and receiving signals at different excitation angles, and - a processing module (2) adapted to control the transmission and reception of the transducers, to process the signals received by the transducers so as to express the signals received by the ultrasonic probe in two plane wave planes constituted by the transmission and reception wave vectors of the probe, and to derive therefrom information representative of the three-dimensional orientation of the fibrous structure of the mechanical part.

The present invention belongs to the field of signal and information processing, and particularly relates to a method for calculating the thermospheric horizontal regional wind field of a multi-station incoherent scatter radar, aiming to solve the problem that the prior art cannot detect and calculate the wind fields at different positions in the horizontal region of low-latitude areas. This method includes: calculating the polarization angles of the transmitting station and the receiving station, and then calculating the included angle between the transmitting beam and the receiving beam to obtain the line-of-sight velocity of each station; connecting the coordinates of the transmitting station and each receiving station, and establishing a geometric transformation relationship in combination with the position of the detected scattering point to obtain the backscattering wave vector of the transmitting station and the scattering wave vectors of each receiving station in the coordinate system centered on the scattering point; obtaining the vector velocity of multi-station collaborative detection of the same scattering volume; determining the diffusion velocity corresponding to the vector velocity, calculating the thermospheric meridional wind field, and combining the distribution of different scattering points in the horizontal plane to obtain the thermospheric horizontal regional wind field. The present invention realizes the detection and calculation of the wind fields at different positions in the horizontal region.

The invention discloses a tetramer refractive index sensor based on continuous domain bound states (BICs) and a manufacturing method of the tetramer refractive index sensor. The sensor comprises a silicon dioxide substrate and tetramer unit cells distributed on the upper surface of the substrate in an array mode. The tetramer unit cell comprises four positive polygonal cylinders which are identical in size, the positive polygonal cylinders are perpendicular to the silicon dioxide substrate, and the positive polygonal cylinders are arranged in a matrix mode and rotate by an angle theta towards the center of the unit cell. Along with the change of theta, the metasurface unit cell is converted from a monomer to a tetramer and then converted from the tetramer to the monomer, so that energy band folding is induced in a wave vector space, and then the high-Q-value BICs metasurface with the Q value insensitive to the rotation angle is excited. The refractive index sensor also has the characteristic of high refractive index sensing sensitivity, and the detection efficiency, flexibility and accuracy of the refractive index sensor in the biomedical field are improved.

A method for calculating a band gap of a built-in harmonic oscillator periodic structure of a hollow pipe pile comprises the steps that a hollow pipe pile body, a soil body and a harmonic oscillator coordinate system are divided through regional decomposition, and a unit cell structure total constraint condition matrix composed of a periodic boundary constraint condition matrix and a pile-soil contact interface constraint condition matrix is established; processing the unit cell structure total constraint condition matrix through a linear expression method to obtain a basic solution set; establishing a unit cell structure total energy functional and a motion equation of the unit cell structure according to the basic solution system set, and scanning the wave number of the first Brillouin region to obtain a vibration frequency dispersion curve of a built-in harmonic oscillator periodic structure of the hollow pipe pile; and analyzing the corresponding relationship between the wave vector and the frequency of the periodic pile-in-row structure to obtain the band gap characteristics of the periodic structure of the built-in harmonic oscillator of the hollow pipe pile. According to the method, the pile-soil parameter distortion problem and the boundary dependence problem in shape function construction are avoided, so that the method for calculating the band gap of the built-in harmonic oscillator periodic structure of the hollow pipe pile is provided, the calculation implementation complexity is low, and the calculation result is accurate.

The application provides a flow field reconstruction and deduction method based on K-A theorem, and belongs to the technical field of ship hydrodynamics. First, multi-dimensional data such as the direction, amplitude, period, frequency and flow velocity of irregular waves are collected and integrated into high-dimensional wave vectors. Then, the KAN network with B-spline curve as a learnable function is used to map the high-dimensional input into a low-dimensional parameter list, obtain the amplitude, angular frequency and initial phase of the dominant equivalent regular wave, calculate the decoupling target function by constructing an equivalent wave superposition model, compare the decoupling target function with the true value to obtain a loss function, and then optimize the network parameters by backward propagation until convergence. Finally, based on the network output parameters, a wave superposition model is constructed to represent the real wave in the form of a series of interpretable regular waves superimposed in time sequence, so that efficient and accurate flow field reconstruction and deduction are realized.

Embodiments of the present application propose an imaging system based on super-Raleigh limit focusing lens and its application, which can be widely applied in the technical fields of photolithography, biomedical, optical imaging and nanometer structure precision measurement; the system can produce transverse wave vector distribution and excitation and detection vector beams with wave vector range meeting the requirements by wave vector ring modulation on incident linearly polarized light, focus the vector beams to make the focusing field meet the scale requirements, so as to obtain super-Raleigh limit excitation PSF and detection PSF, and obtain a confocal PSF capable of exciting high-order terms of spot intensity by superimposing the excitation and detection PSFs, thereby improving the imaging resolution of the system; on the other hand, the system can use solid and hollow focusing spots formed by focusing vector beams to form an image, and calculate according to the imaging result to reduce interference, so as to obtain a high-resolution detection result far exceeding the Raleigh diffraction limit, and further improve the resolution of the imaging system.

The invention relates to the technical field of lasers, in particular to a semiconductor laser and a design method thereof.The design method of the semiconductor laser comprises the steps that simulation analysis is conducted on the basis of the effective refractive index # imgabs0 #, the lasing wavelength # imgabs1 #, the channel refractive index difference # imgabs2 #, the lateral component k0 of a fundamental mode wave vector and the lateral component k1 of a first-order mode wave vector; obtaining a second corresponding relation among the channel refractive index difference # imgabs3 #, the central waveguide width WR and the channel width range; and selecting a first central waveguide width, a first channel depth and a first channel width satisfying a second corresponding relationship, taking the first central waveguide width as a target central waveguide width, taking the first channel depth as a target channel depth, and taking the first channel width as a target channel width. The method is at least beneficial to reducing the difficulty of designing and obtaining the semiconductor laser with better light beam quality.

The invention discloses a one-dimensional ternary structure photonic crystal biological detection sensor and application, and relates to the technical field of sensors. According to the one-dimensional ternary structure photonic crystal biological detection sensor, at least three unit cells, a first defect structure and at least three unit cells are sequentially arranged in the direction from an incident wave vector to an emergent wave vector, and the number of the unit cells located on the two sides of the first defect structure is the same; a first graphene layer, a middle layer and a second graphene layer are sequentially arranged in each unit cell, and the first defect structure comprises a detection layer; the one-dimensional ternary structure photonic crystal biological detection sensor further comprises a second defect structure. The one-dimensional ternary structure photonic crystal biological detection sensor can realize a refractive index sensing function in an omnidirectional photonic forbidden band, is good in transmission performance, wide in detection range and high in detection fault tolerance, can realize different types of sensing effects at different temperatures, has more functions, is relatively low in cost, and is suitable for more application scenes.

The application discloses a full-wavelength limit resolution structured light microscopic imaging method and related products, which can be applied to the technical field of optical microscopes. The method comprises the following steps: determining a target fringe period of a structured light illumination fringe based on an emission wavelength; adjusting the structured light illumination fringe to the target fringe period based on a spatial light modulator, so that a structured light microscopic imaging system reaches full-wavelength limit resolution; acquiring a first frequency domain image, a second frequency domain image and a third frequency domain image corresponding to a target sample based on the structured light illumination fringe; processing the first frequency domain image, the second frequency domain image and the third frequency domain image based on a frequency domain image multiplication algorithm, and determining a target wave vector; and performing image reconstruction on the target sample based on the target wave vector. In this way, the system maintains the limit resolution at any emission wavelength through the adjustment of the spatial light modulator, and then the frequency domain image multiplication algorithm accurately solves the target wave vector under the condition, thereby improving the accuracy of image reconstruction.

The invention discloses an electromagnetic pulse propagation calculation method based on a generalized propagation matrix and a transfer function method, and the method comprises the steps: determining the explosion point height and the receiving point height of an electromagnetic pulse, and constructing an ionosphere parameter on a propagation path; calculating a wave vector of the position of an electromagnetic pulse explosion point, and calculating a reflection coefficient matrix and a transmission coefficient matrix of the electromagnetic pulse which upwards penetrates through the ionized layer and downwards radiates to the ground through a generalized propagation matrix method; defining the type of the electromagnetic pulse, and calculating the amplitude of the superposed uplink and downlink electromagnetic waves at the explosion point position through the reflection coefficient matrix; in combination with a generalized propagation matrix method and a transfer function method, calculating the frequency spectrum and time domain waveform of the electromagnetic wave penetrating through the ionosphere at the explosion point position through inverse Fourier transform; time-frequency characteristic analysis is carried out according to the frequency spectrum and the time-domain waveform of the electromagnetic waves penetrating through the ionosphere, a time-frequency graph is obtained, the experiment cost is remarkably reduced, and efficient and low-cost theoretical support is provided for propagation of the electromagnetic pulses in the ionosphere.

The present application provides an acoustic imaging system and method for underwater targets, comprising: a transducer for emitting a first acoustic wave signal toward an underwater target object, which is reflected at a first position and forms an echo signal; a laser sensor for emitting a laser beam and determining echo wave vector information of the echo signal based on first phase information of the laser beam under the influence of the echo signal; and determining normal information at the first position based on the first acoustic wave wave vector information and the echo wave vector information of the first acoustic wave signal, so as to form an acoustic image of the underwater target object. The present application integrates vector information of the normal vector into acoustic imaging, achieving high-quality imaging. The accuracy of the wave vector information of the echo signal also meets the requirements of high-resolution acoustic imaging, especially in underwater long-distance and small target imaging detection scenarios, which can effectively meet the acoustic imaging effect.

The application discloses a near-field equivalent method, a mask 3D near-field correction method and a storage medium. The optical near-field equivalent method comprises the following steps: setting a three-axis coordinate system, so that the initial propagation direction of a light source with a preset angle is propagated along a first axis, and an initial wave vector and a polarization direction are obtained; performing a rotation operation on the initial wave vector and the polarization direction according to the preset angle of the light source; analyzing the polarization direction and the polarization vector of the light source after the rotation operation; rotating the polygon and the light source according to the preset angle of the polygon, so that a new wave vector and a corresponding rotation angle are obtained; analyzing the polarization direction, the polarization vector and the component of the light source after the second rotation operation; generating an edge near-field under equivalent conditions by using a 2D strict electromagnetism algorithm; and performing linear superposition according to the respective components based on the polarization direction of the light source after the second rotation operation, so that an equivalent near-field result is obtained. The application reduces the calculation burden of near-field generation.

An integrated electro-optical non-reciprocal mode converter based on birefringent crystal refractive index matching comprises a chip, the upper layer of the chip is an electro-optical material film with birefringent characteristics, a mode converter is prepared on the electro-optical material film, and the mode converter is a two-port device; the first port is used for receiving an input optical signal of a mode 1 and allowing the optical signal to enter the mode converter; and the second port is used for outputting the converted optical signal in the mode 2. The refractive index difference of a birefringent material to a transverse electric mode (TE) and a transverse magnetic mode (TM) is utilized to realize the pre-coarse matching of the refractive indexes of TE and TM modes, and then the fine matching of the refractive indexes and wave vectors is realized in combination with electro-optical modulation, so that the integrated electro-optical mode converter insensitive to the process is realized. The device is simple in structure and has a wide application prospect.

The invention discloses a holographic two-dimensional grating exposure method and device and an exposure beam calculation method, and relates to the technical field of holographic two-dimensional gratings, and the exposure beam calculation method comprises the steps: determining wave vectors k1 and k2 of an exposure beam of a first three-dimensional grating vector KG1 according to the first three-dimensional grating vector KG1 and a second three-dimensional grating vector KG2, the wave vector k1 is the wave vector of the common exposure light beam of the three-dimensional grating vector I KG1 and the three-dimensional grating vector II KG2, introducing a tilt vector and constructing a vector triangle to carry out rotation iterative calculation, so as to obtain a three-dimensional grating vector I KG1 and a three-dimensional grating vector II KG2, and the wave vector k1 is the wave vector of the common exposure light beam of the three-dimensional grating vector II KG2; the exposure method and the exposure device are set according to the parameters of the exposure light beams obtained by the calculation method, so that the problem that the operation difficulty is high due to the fact that the two paths of light beams are needed to carry out exposure for multiple times when the holographic two-dimensional grating is manufactured is solved.

The application belongs to the technical field of photonic artificial micro-nano structure design and image processing, and discloses an optical spatial differential device for target extraction, a reverse design method and application. The method comprises the following steps: setting a target transfer function according to the functional requirement of an optical device; establishing an optimization model according to the design parameters of a super surface, the design parameters being dielectric constant distribution, and performing certain constraint and binary processing on the design parameters in each iteration process; judging whether the loss function converges or not, outputting an optimization scheme if the loss function converges, and otherwise, performing gradient calculation and continuing the next iteration optimization process. The optical spatial differential device is based on the diffraction optical angular spectrum theory and the Fourier transform property, directly acts on an incident light field image, realizes spatial frequency regulation of the light field image in the wave vector space, and thus achieves the purpose of processing the image in the optical domain. The obtained patterns of the application can be directly applied to a double photopolymerization 3D printing technology, so as to prepare a sample.

The application belongs to the technical field of seismic exploration, and specifically discloses an elastic wave vector seismic exploration data static correction method, which comprises the following steps: S1, establishing a P-wave micro-logging surface velocity model; S2, establishing a three-component micro-logging S-wave surface velocity model; S3, performing low-frequency static correction on P-wave seismic data; S4, performing low-frequency static correction on S-wave seismic data; S5, performing low-frequency static correction on converted wave seismic data; S6, calculating the shot point and geophone residual static correction amount of P-wave wave field, converted wave wave field and S-wave wave field; and S7, calculating the total static correction amount of the shot point and geophone of the P-wave wave field, converted wave wave field and S-wave wave field. The application effectively solves the static correction problem of various wave field seismic data in elastic wave vector seismic exploration, improves the calculation efficiency and imaging accuracy, and is suitable for the static correction of seismic exploration data.