262results about "Polarisation spectroscopy" patented technology

The invention discloses a distributed polarization detection system and method based on position regulation and control target reconstruction, and belongs to the field of distributed polarization cooperative detection and photoelectronic imaging. The distributed polarization detection system comprises a lighting device, a multi-parameter auxiliary detection objective table and a long-wave infrared polarization detection device; the long-wave infrared polarization detection device is provided with three sub-polarization detection devices, the method is implemented based on a distributed polarization detection system, and polarization information in three different directions can be collected at the same time through the distributed polarization detection system based on position regulation and control target reconstruction. The identification capability of the disguised / similar target at a single angle is improved; and errors caused by time delay are avoided. Polarization information obtained by reasonably distributing detection positions is mutually supplemented, polarization images are mutually fused, target signals are effectively extracted from scattered light to analyze the polarization characteristic difference between interference light and target reflected light, and the resolution, contrast and detection distance of polarization imaging can be improved.

The invention discloses a medium-wave infrared pixel-level spectral polarization optical system, which belongs to the field of lenses and comprises a refraction lens group, a cold diaphragm, a super-structure micro-lens array and a medium-wave infrared quantum dot detector which are sequentially arranged along an incident light path, the super-structure micro-lens array comprises an object side micro-structure and an image side micro-structure; the image side microstructure is used for realizing focusing; the object side microstructure comprises a plurality of object side units which are periodically distributed; each object side unit comprises a polarization metal wire grating structure and a plurality of metasurface-microcavity structures; the polarization metal wire grating structure is formed by arranging metal wire gratings according to different directions so as to realize detection of different orthogonal polarization states; the metasurface-microcavity structure comprises a middle dielectric layer, distributed Bragg gratings located on the two sides of the middle dielectric layer and a metasurface columnar structure unit array embedded into the middle dielectric layer, and the metasurface columnar structure unit array is used for achieving filtering of light of different wave bands. The system has the advantages of good imaging quality, small size, real-time imaging and the like.

In one embodiment, a system includes a first light source configured to produce a first beam of light at a first frequency and a second light source configured to produce a second beam of light at a second frequency, where the first and second frequencies are offset by a frequency offset Ω. The system also includes one or more optical elements configured to: direct the first and second beams of light to a sample, and collect a Raman signal produced by the sample in response to the first and second beams of light. The system further includes an optical receiver configured to detect the Raman signal. The optical receiver includes a third light source configured to produce a third beam of light at a third frequency, where the third light source includes a wavelength-tunable laser, where the third frequency is adjustable.

The invention relates to a polarization spectrum imaging device and a polarization spectrum reconstruction method, in particular to a miniature high-energy-efficiency diffraction polarization spectrum imaging device and a polarization spectrum reconstruction method thereof, and solves the technical problems that an existing polarization spectrum imaging device is low in energy utilization rate and regulation and control precision and large in size. According to the miniature high-energy-efficiency diffraction polarization spectrum imaging device provided by the invention, the diffraction spectrum lens module, the electronic control rheological lens module and the polarization module are directly and compactly integrated by utilizing the macro imaging module, so that the space coupling distance can be reduced, and the imaging quality can be effectively improved; the diffraction spectrum lens module realizes time-sharing spectrum regulation and control through the electronic control rheological lens module, and the polarization module performs area array space division polarization regulation and control, so that 0-degree, 45-degree, 90-degree and 135-degree polarization information under different spectrum channels can be directly obtained, the absorption effect of traditional light filtering on spectrums is avoided, the energy utilization rate is improved, and the energy consumption is reduced. And the number of polarization regions can be reduced, and the regulation and control precision is improved.

The invention discloses an underwater active polarization imaging device based on a liquid crystal phase retarder, which comprises a CCD (Charge Coupled Device) camera, an optical filter, a beam splitter prism, the liquid crystal phase retarder, a polarizer, a front lens and an annular active light source which are sequentially arranged on the same straight line, and the imaging device is arranged in front of a shot target at an object distance capable of clearly imaging; wherein the rotating table, the liquid crystal controllable phase delayer, the annular active light source and the CCD industrial camera are connected to a computer for control and image processing, and the underwater active polarization imaging device calculates a Stokes vector of a shot target by shooting a plurality of polarization images with different polarization angles and polarization states; according to the method, the image of the target object is acquired through the polarization information of the object, the influence of scattering absorption of underwater impurities can be eliminated, and an underwater high-definition image is presented through relative algorithm optimization.

The invention discloses a transient absorption spectrum measurement system, method and device for polarized light, and relates to the technical field of ultrafast spectrum measurement. In the system, a laser generation device generates first laser and second laser, and the first laser is converted into left-handed circularly polarized light or right-handed circularly polarized light through a pump light polarization device to serve as pump light for exciting a sample to be detected; the first Glan prism converts the second laser into detection light which is linearly polarized in a specified direction so as to detect the sample to be detected; the first lambda / 4 wave plate is used for converting the detection light after detecting the to-be-detected sample into linearly polarized light with mutually vertical polarization; the Wollaston prism enables the linearly polarized light with mutually vertical polarization to be respectively transmitted to the measuring device along different directions; the measuring device calculates the transient absorption spectrum of the left-hand circularly polarized probe light and the transient absorption spectrum of the right-hand circularly polarized probe light. The system can simultaneously measure the transient absorption spectrums of the left-hand circularly polarized light and the right-hand circularly polarized light, so that the measurement error is reduced.

The invention discloses a polarization spectrum modulation type multispectral stereo imaging method which solves the problem that in the prior art, an existing polarization spectrum imaging scheme does not achieve three-dimensional reconstruction of a target and achieves the purpose that the three-dimensional reconstruction of the target is not achieved under the condition that active illumination or special marks are not needed. Synchronous high-precision reconstruction of physical attributes and three-dimensional geometry of the surface of the target is realized; the method comprises the following steps: uniformly modulating polarization information and spectral information of incident light of a target through a three-way optical filter and a polaroid to obtain modulated incident light information; performing aliasing acquisition of a plurality of polarization spectrum components on the modulated incident light information through a multi-color detector combination to obtain aliasing light intensity; performing linear solution on the aliasing light intensity to obtain each polarization spectrum component vector, calculating the polarization degree and the polarization angle of each channel, and further deriving a surface zenith angle and an azimuth angle; reconstructing the three-dimensional morphology of each spectrum channel through normal gradient field frequency domain integration; and finally, fusing the multi-spectral three-dimensional data to obtain a multi-spectral three-dimensional imaging result.

The invention discloses a method for constructing a polarization calibration precision model of a focal plane visible light polarization detector and application. According to the method, a comprehensive matrix form is formed by combining response models of four polarization channels of the detector, and a final target model is obtained through verification and continuous correction. The matrix method can more systematically describe the mutual relation among the channels, so that quantization characteristics such as the degree of polarization (DoLP) can be more accurately calculated through a plurality of response values, and higher calculation efficiency and higher adaptability are achieved.

The invention discloses a design method for an airborne snapshot type hyperspectral polarization zoom imaging optical system, and relates to the field of optics, and the method comprises the steps: calculating the focal length of a zoom group, the rear intercept of a front zoom telescoping system, the moving distance of the zoom group, the focal length of a front fixed group, and the focal length of a rear fixed group according to a focal power distribution model of a reverse long-distance zoom objective lens; setting the distance between the zoom group and the diaphragm according to the moving distance of the zoom group; the zoom group is arranged between the front fixed group and the diaphragm in a sliding manner; determining an optimal glass combination according to the total focal power corresponding to each glass combination, and setting the material of each lens according to the optimal glass combination; simulating each combination to obtain the distinguishable minimum wavelength difference of the polarization detector under each combination, calculating the focal length of the imaging mirror according to the minimum wavelength difference, and designing the zoom imaging optical system according to the combination corresponding to the minimum wavelength difference and the focal length of the imaging mirror. According to the invention, the snapshot type hyperspectral polarization imager with both high spatial resolution and high spectral resolution can be designed.

The invention relates to a polarization spectrometer, in particular to a pitch-adjustable polarization spectrometer based on cholesteric cellulose chiral liquid crystal. The polarization spectrometer is prepared by adopting the following method: step 1, regulating and controlling the screw pitch of cholesteric cellulose chiral liquid crystal; step 2, preparing a flexible PDMS film; step 3, preparing a patterned PDMS through hole film; 4, treating the surface of the glass sheet; step 5, filling cholesteric cellulose chiral liquid crystals; and step 6, orienting the cholesteric cellulose chiral liquid crystal to obtain the pitch-adjustable polarization spectrometer with the film-shaped patterned cholesteric cellulose chiral liquid crystal. The problems that a traditional small-molecule liquid crystal chiral agent is difficult to regulate and control the screw pitch of the cholesteric phase cellulose chiral liquid crystal and easy to agglomerate can be solved, and simple preparation of the screw pitch-adjustable cholesteric phase cellulose chiral liquid crystal is achieved; and meanwhile, transmission of right-handed circularly polarized light and selective reflection of left-handed circularly polarized light are realized by utilizing the patterned cholesteric cellulose chiral liquid crystal.

In one embodiment, a system includes a pump light source configured to produce a pump beam of light at a pump frequency and a Stokes light source configured to produce a Stokes beam of light at a Stokes frequency, where the pump and Stokes frequencies are offset by a frequency offset Ω. The system also includes one or more optical elements configured to: direct the pump and Stokes beams of light to a sample, and collect a Raman signal produced by coherent Raman scattering of the pump and Stokes beams of light at the sample. The system further includes an optical receiver configured to detect the Raman signal. The optical receiver includes a probe light source configured to produce a probe beam of light at a probe frequency, where the probe light source includes a wavelength-tunable laser.

In one embodiment, a system includes a first light source configured to produce a first beam of light at a first frequency and a second light source configured to produce a second beam of light at a second frequency, where the first and second frequencies are offset by a frequency offset Ω. The system also includes one or more optical elements configured to: direct the first and second beams of light to a sample, and collect a Raman signal produced by coherent Raman scattering of the first and second beams of light within the sample. The system further includes an optical receiver configured to detect the Raman signal. The optical receiver includes a third light source configured to produce a third beam of light at a third frequency, and an optical detector configured to coherently mix a portion of the Raman signal with the third beam of light.

In one embodiment, a Raman spectroscopy system includes a pump light source configured to produce a pump beam of light at a pump frequency and a Stokes light source configured to produce a Stokes beam of light at a Stokes frequency, where the pump and Stokes frequencies are offset by a frequency offset Ω. The system further includes one or more optical fibers configured to (i) direct the pump and Stokes beams to a sample located external to the system and (ii) direct a Raman signal to the system, where the Raman signal is produced by coherent Raman scattering of the pump and Stokes beams of light at the sample. The system also includes an optical receiver configured to detect the Raman signal. The optical receiver includes a probe light source and an optical detector configured to coherently mix the Raman signal with a probe beam of light.

The invention provides a video-level polarization spectrum imaging system and method. The system comprises an imaging unit, a polarization spectrum coupling unit, a data processing unit and an output unit, the imaging unit is used for imaging a target object on an imaging plane; the polarization spectrum coupling unit comprises a multi-channel spectrum modulation diaphragm and a micro-polarization focal plane array; the multi-channel spectrum modulation diaphragm is used for dividing incident light into a plurality of different spectrum channels; the micro-polarization focal plane array is used for converting the spectrum modulation light into polarized light of a plurality of different angles; the data processing unit is used for fusing the spectral information, the polarization information and the pixel information into multi-dimensional polarization spectral data; and the output unit is used for transmitting the polarization spectrum data to a computer. The system obtains spectrum information through a spectrum modulation diaphragm so as to distinguish the material composition and the chemical property of a target object; according to the system, polarization imaging is carried out through the micro-polarization focal plane array, and the detectability and the recognition rate of a target object can be improved.

The invention relates to the technical field of optics, in particular to a low-crosstalk channel modulation interference polarization spectrum detection method and system, and the system comprises a half-field telescopic module, a phase modulation module, an interference modulation module and a detection module. The half-view-field telescope module is used for performing lower half-view-field beam collimation on an input target beam, the target beam is propagated to the phase modulation module in parallel according to a set range, a composite polarization splitting prism group in the phase modulation module performs light splitting operation based on the target beam output by the half-view-field telescope module, and two parallel polarized lights are emitted, independent phase modulation of the two paths of light is ensured; and the interference modulation module is used for performing light splitting modulation according to the two paths of polarized light to ensure that the two paths of modulated polarized light beams interfere with each other and are transmitted to the detection module for imaging. According to the system, the detection precision of a narrow-band polarization spectrum or a polarization spectrum with an obvious narrow-band wave crest and a narrow-band absorption peak is improved, the polarization spectrum detection capability is high, and the application range is wide.

The invention relates to an optical path multiplexing type snapshot polarization spectrum three-dimensional combined imaging detection system, which is based on an optical path multiplexing double-channel combined imaging structure and is divided into a polarization channel and a polarization spectrum channel through a main optical path splitting system. Wherein the polarization channel obtains a high-spatial-resolution polarization image of a target, the high-spatial-resolution polarization image can serve as input data of polarization three-dimensional data inversion of the target and can also serve as spatial prior information of polarization spectrum image reconstruction of the target, and definition and accuracy of polarization spectrum image reconstruction of the target are improved; a polarization spectrum channel adopts an optical path multiplexing type structure, the system structure complexity and the installation and adjustment difficulty are reduced, and an obtained polarization spectrum image can be used as input data for inversion of a polarization spectrum reflectivity curve of a target. The system can provide polarization, spectrum and three-dimensional combined imaging data of the target at the same time, and can effectively improve the target recognition precision and the target material classification accuracy in the aspect of material target classification in a complex background environment.

The invention belongs to the field of ultrafast laser design and hyperspectral imaging, and provides an active spectrum modulation ultrafast laser and a hyperspectral detection system and method thereof, and the technical scheme is that the active spectrum modulation ultrafast laser comprises an ultrafast pulse laser, a primary polarization modulation module, a nonlinear broadening module and a secondary polarization modulation module; narrow-spectrum pulse laser emitted by the ultrafast pulse laser enters the nonlinear broadening module to be subjected to spectrum broadening to obtain wide-spectrum pulse laser after being subjected to preliminary modulation of the polarization state of laser of all wave bands through the preliminary modulation module, and the wide-spectrum pulse laser emitted by the nonlinear broadening module enters the secondary polarization modulation module to be subjected to spectrum broadening to obtain wide-spectrum pulse laser. And after randomizing the polarization state of each spectrum, irradiating the spectrums to a target scene. After the spectrum is modulated, the camera is controlled to collect the reflectivity intensity information of the target scene, and after irradiation and image collection of multiple groups of selected spectrum structures are completed, hyperspectral detection of the target scene is achieved in combination with the measured spectrum distribution and the corresponding reflectivity information.

A spectrum acquisition method and device belong to the technical field of optics. The spectrum acquisition device comprises a light splitting unit, a first spectrum calculation unit, a second spectrum calculation unit and a processing unit, the light splitting unit is used for receiving a light beam from the light source, splitting the light beam into a first polarization component and a second polarization component which are different in polarization direction, transmitting the first polarization component to the first spectrum calculation unit, and transmitting the second polarization component to the second spectrum calculation unit. The first spectrum calculation unit is used for calculating the spectrum of the first polarization component; the second spectrum calculation unit is used for calculating the spectrum of the second polarization component; the processing unit is used for obtaining the spectrum of the light beam according to the spectrum of the first polarization component and the spectrum of the second polarization component. According to the spectrum acquisition device, the problem that the computational spectrometer cannot determine the spectrum of the light beam when the light beam is the non-polarized light can be solved, and the spectrum acquisition device provided by the invention can acquire the spectrum of the light beam when the light beam is the non-polarized light. The method is used for acquiring the spectrum.

Methods, apparatus and systems that relate to a low-cost reconfigurable polarimetric imaging are described. One example polarization imaging system includes a lens positioned to receive light reflected from one or more objects, and a spectral-polarization filter positioned at an aperture plane of the lens to filter the light received by the lens. The polarization imaging system can further include a sensor positioned to detect the filtered light from the spectral-polarization filter to form a polarization image of the one or more objects. The spectral-polarization filter comprises a first array of multiple spectral filters and a second array of multiple polarizers.

In one embodiment, a system includes a first light source configured to produce a first beam of light at a first frequency and a second light source configured to produce a second beam of light at a second frequency, where the first and second frequencies are offset by a frequency offset Ω. The system also includes one or more optical elements configured to: direct the first and second beams of light to a sample, and collect a Raman signal produced by the sample in response to the first and second beams of light. The system further includes an optical receiver configured to detect the Raman signal. The optical receiver includes a third light source configured to produce a third beam of light at a third frequency, and one or more optical detectors configured to coherently mix a portion of the Raman with a portion of the third beam of light.

This relates to systems and methods for measuring a concentration and type of substance in a sample at a sampling interface. The systems can include a light source, optics, one or more modulators, a reference, a detector, and a controller. The systems and methods disclosed can be capable of accounting for drift originating from the light source, one or more optics, and the detector by sharing one or more components between different measurement light paths. Additionally, the systems can be capable of differentiating between different types of drift and eliminating erroneous measurements due to stray light with the placement of one or more modulators between the light source and the sample or reference. Furthermore, the systems can be capable of detecting the substance along various locations and depths within the sample by mapping a detector pixel and a microoptics to the location and depth in the sample.

The invention discloses a focal plane polarization detector based on collaborative design of a metasurface and a pixel mesa, and the detector comprises a metasurface structure which selects a pixel-level full-Stokes polarization sensitive metasurface structure, comprises a plurality of metasurface structure units which are distributed in an array, and is used for the preliminary polarization decoupling and directional convergence; the focal plane pixel element array is in pixel-level registration with the metasurface structure and comprises a multi-element plane array composed of a plurality of pixel elements, and each pixel element is provided with a table board; and the side length of each table surface is in a range of 2-3 times of the full width at half maximum of a light spot converged by the metasurface structure unit, so that the energy utilization efficiency of each pixel on a light field is considered, optical signal crosstalk of a non-convergence center area and even adjacent pixels is inhibited, and the polarization extinction ratio is further improved on the basis of polarization decoupling of the metasurface structure. According to the invention, preliminary polarization decoupling is realized, crosstalk between adjacent pixels is suppressed by combining the collaborative design of a secondary pixel table, and the polarization extinction performance of a single metasurface is broken through.

The invention discloses a calibration method of a polarization focal plane imaging system and an imaging system, relates to the field of photoelectric imaging and remote sensing detection imaging, and solves the problems of low correction efficiency and difficulty in correcting a system with a changed polarization state in the conventional polarization error correction technology. According to the calibration method, a plurality of coding patterns and corresponding polarization modulation matrixes are obtained based on the collected uniform light field and serve as calibration results. The polarization error correction method comprises the steps of obtaining an observation intensity vector based on a target scene; a corresponding polarization modulation matrix is obtained based on the coding pattern according to a coding polarization modulation matrix lookup table, and then a down-sampling Stokes vector after polarization error correction is obtained; and completing the correction of the polarization error through an imaging reconstruction method. A polarization focal plane imaging system comprises an imaging lens, a DMD digital micromirror array coding module, a focal plane DoFP polarization detector and an imaging reconstruction module. The method is suitable for the fields of remote sensing detection, target identification, environment monitoring and the like.

According to the single-photon laser multispectral polarization detection method and system under underwater turbulence disturbance provided by the invention, pulse laser is emitted to a target after being scanned, and weak echoes of the pulse laser are received by a double-photon detector and a single-photon detector after being subjected to spectral filtering and spatial polarization beam splitting. A time correlation single photon counting technology is adopted, time, polarization and wavelength information of each photon is recorded synchronously, and a multi-dimensional data set is generated in combination with a scanning angle. After turbulence noise is suppressed through preprocessing, target distance information is extracted to generate a three-dimensional point cloud, and the polarization degree and the depolarization ratio of each pixel point are calculated; and finally, geometric, polarization and spectral data are fused, a high-precision three-dimensional terrain and polarization image is generated, and accurate target identification in a complex underwater environment is realized. According to the invention, a set of multi-dimensional information sensing system capable of carrying out long-distance, high-resolution and high-precision classification and identification on a target in a complex underwater environment with strong attenuation, strong noise and strong turbulence disturbance is constructed.

The invention discloses a stress regulation-based micro spectrometer system of a transparent polymer material. The system comprises a polarization modulation unit, a transparent polymer layer, an imaging detector and a spectrum reconstruction module. The transparent polymer material is stretched by a specific design and then is arranged between the two polarizing films of the polarization modulation unit, and the imaging detector chip is arranged at the bottom layer of the device. And the spectrum reconstruction module performs spectrum reconstruction on the data received by the imaging detector by applying a calculation spectrum reconstruction algorithm to restore the original spectrum data received by the whole device. According to the technical scheme, a new spectrum detection thought is provided, and high-resolution spectrum analysis can be carried out in each wave band while the size of a miniature device is ensured by adjusting the applicable wave band of each component.

Embodiments can relate to systems and methods for generating hyperspectro-polarimetric images. The system can include a metasurface having a plurality of super pixels configured to encode spectral and polarization image data into spatial intensity distributions. The system can include an image capture device having at least one image sensor and a plurality of subsets of pixels configured to capture the spatial intensity distributions encoded by the metasurface. The system can include a processor in communicative connection with the image capture device. The processor can be configured to receive pixel data from the image capture device, generate captured image input data based on the pixel data, and access at least one computational reconstruction model configured to decode the captured image input data, and generate image output data based on the decoded captured image input data.

This invention relates to the field of optical imaging and detection technology, specifically providing a broadband snapshot-type polarization interferometry imaging detection system and method for breast tumors. A broadband light source illuminates a breast tumor tissue sample. The reflected signal light is collected and collimated by a pre-optical system, then sequentially passes through a first and a second ray shaping unit for two shearing and two polarization state transformations, resulting in two beams of linearly polarized light and two beams of circularly polarized light. These beams are imaged by an imaging lens to an area array detector to obtain a polarization interferogram, which is then demodulated to obtain all Stokes parameters of the breast tumor tissue sample. This invention achieves broadband snapshot imaging of breast tumors with all Stokes parameters without using an analyzer, doubling the light throughput compared to traditional polarization imaging instruments using analyzers. Furthermore, this invention has advantages such as compact structure, no moving parts, easy assembly and adjustment, and no need for image registration.

Optical spectrometers and polarization state hybrid sensors may be used to determine the spectral and polarization state components of electromagnetic waves. Hybrid sensors may be bulky devices and require waves to enter at a nearly direct angle of incidence to record a measurement. What is disclosed is an ultra-compact polarization state sensor with nanophotonic components. Nanophotonic components may contain metasurfaces and Bragg filters. Each metasurface may contain light scattering, anisotropic nanostructures that may be randomized to create a large input angle, and the Bragg filter may result in the light dispersion independent of the input angle. The sensor may be capable of handling about 200 nm bandwidth. The sensor may be able to read image data in the visible and to read spectral and polarization state data in the infrared wavelength range. The surface area of the sensor may be about 1 mm2, allowing it to fit on mobile devices.

The invention discloses an integrated polarization, multi-wavelength and multi-frequency photoacoustic tomography device, which comprises a light source assembly, a polarization assembly, a signal receiving assembly and a signal processing assembly, and is characterized in that the light source assembly is used for generating collimated pulse laser with different wavelengths, and the polarization assembly can enable the pulse laser with different wavelengths to generate a polarization state; the polarization angle of the light beam is changed, the signal receiving assembly can detect a photoacoustic signal after the polarized light irradiates a sample, the signal processing assembly is used for amplifying and collecting the photoacoustic signal, the multi-wavelength light source is adopted as an excitation light source, and the polarization assembly enables the laser of each wavelength to generate a polarization state; according to the multi-wavelength multi-frequency photoacoustic imaging system and the multi-wavelength multi-frequency photoacoustic imaging method, a plurality of ultrasonic transducers with different center frequencies are utilized to detect photoacoustic signals, so that polarized light acoustic imaging, multi-wavelength photoacoustic imaging and multi-frequency photoacoustic imaging can be combined, and the purpose of multi-angle and multi-parameter biomedical imaging is achieved.

The invention relates to the technical field of micro-nano optics, and particularly provides a detection metasurface, a spectral polarization detection method and a construction method of the metasurface. The detection metasurface comprises a substrate and dielectric cylinders arranged on the surface of the substrate. Wherein the phase parameter of the dielectric cylinder meets a preset detection condition; the preset detection condition comprises that the positions of the light with different wavelengths or / and different polarization states on the focusing focus of the focal plane are different. Because the phase parameter of the dielectric cylinder meets the preset detection condition, incident light with different wavelengths or / and different polarization states can be focused at different positions of a focal plane based on the detection metasurface, and then spectral information and polarization information contained in the incident light are determined based on the position and light intensity of a focusing point. Therefore, spectrum information and polarization information can be obtained in real time through single detection based on the detection metasurface, real-time polarization spectrum detection is achieved, the information obtaining dimension is improved, and meanwhile the detection efficiency and the dynamic object detection capacity are improved.