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44 results about "Square array" patented technology

The Square Kilometre Array (SKA) is a large multi radio telescope project aimed to be built in Australia and South Africa. If built, it would have a total collecting area of approximately one square kilometre.

Two-dimensional antenna array multi-beam scanning method based on holographic amplitude weighting

The invention relates to the technical field of wireless communication and sensing, and particularly discloses a holographic amplitude weighting-based two-dimensional antenna array multi-beam scanning method, which comprises the following steps of: determining the position information of each radiation unit in a two-dimensional antenna array, including calculating the interval and the arrangement mode of the units; an amplitude weighted value of each radiation unit is generated according to the target wave direction, a two-dimensional multi-beam holographic amplitude weighting technology is used, and the radiation unit amplitude weighted values are determined through the two-dimensional multi-beam holographic amplitude weighting technology; generating a corresponding binary discretization coding sequence based on the amplitude weighted value so as to control the excitation amplitude of each radiation unit; and designing a liquid crystal-based Ka-band two-dimensional holographic beam scanning leaky-wave antenna square array, and regulating and controlling a radiation pattern of a two-dimensional antenna array through the coding sequence to realize multi-beam scanning.
Owner:PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV

Deep-learning-based methods for eliminating broadband effects and synthesized-beam effects in low-frequency ska

PendingUS20260120256A1Image enhancementImage analysisSquare kilometre arraySquare array
A deep-learning-based method for eliminating a broadband effect and a synthesized-beam effect in low-frequency Square Kilometre Array (SKA) is provided. The method includes: establishing a frequency-domain extraction module, a feature enhancement module, and a frequency-domain gating module; constructing, based on the frequency-domain extraction module, the feature enhancement module, and the frequency-domain gating module, a neural network model based on a frequency-domain self-attention mechanism; performing primary feature extraction on an input image based on the feature enhancement module to obtain a low-level feature; inputting the low-level feature into the frequency-domain gating module and performing downsampling to achieve feature encoding, so as to obtain an encoded feature; inputting the encoded feature into the frequency-domain extraction module and performing frequency-domain attention computation and upsampling to achieve feature decoding, so as to obtain a decoded feature; and inputting the decoded feature into the feature enhancement module to obtain a target restored image.
Owner:GUIZHOU UNIV

Line-to-circular polarization Huygens transmission array

The invention relates to a line-to-circular polarization Huygens transmission array, which comprises a plurality of transmission array units arranged according to a square matrix form, each transmission array unit sequentially comprises a first metal layer, a dielectric substrate layer and a second metal layer from top to bottom, the first metal layer is located on the upper surface of the dielectric substrate layer, and the second metal layer is located on the lower surface of the dielectric substrate layer. The second metal layer is located on the lower surface of the dielectric substrate layer; the first metal layer comprises a C-like rectangular ring group arranged along the x direction and a C-like rectangular ring group arranged along the y direction; the second metal layer comprises a C-like rectangular ring group arranged along the x direction and a C-like rectangular ring group arranged along the y direction; the structures and sizes of the C-like rectangular ring groups placed in the x direction are the same, and the structures and sizes of the C-like rectangular ring groups placed in the y direction are the same. Compared with the prior art, the problem that an existing line-to-circular polarization transmission array antenna is low in aperture efficiency is solved, and the antenna has the function of focusing and converting a linear polarization spherical incident wave into a circular polarization plane transmission wave based on phase compensation.
Owner:SHANGHAI UNIV +1

Ultra-wideband antenna structure

The invention provides an ultra-wideband antenna structure. The ultra-wideband antenna structure comprises a plurality of first antenna layers, a plurality of second antenna layers and a ground layer, each first antenna layer and each second antenna layer are formed by sequentially arranging a plurality of antenna units at intervals; the first antenna layer and the second antenna layer are vertically arranged to form a square array, and a gap between the antenna units of the first antenna layer is inserted into a gap between the antenna units of the corresponding second antenna layer; the ground layer is made of a flexible material; the first antenna layer and the second antenna layer are fixedly arranged on the ground layer; the sides, facing the ground layer, of the adjacent antenna units are connected through the flexible connecting pieces, the ground layer made of flexible materials is adopted to fit the installation face, meanwhile, gaps exist between the adjacent antenna units of the first antenna layer and the second antenna layer, and when the ground layer bends, the shape of the ground layer is fitted, so that the installation face is more flexible. And the conformal installation capability of the ultra-wideband antenna structure provided by the invention during installation is greatly improved.
Owner:INST OF FLEXIBLE ELECTRONICS TECH OF THU ZHEJIANG +1

Two-dimensional antenna array multi-beam scanning method based on holographic amplitude weighting

The application relates to the field of wireless communication and sensing technology, and particularly discloses a two-dimensional antenna array multi-beam scanning method based on holographic amplitude weighting, which comprises the following steps: determining the position information of each radiation unit in the two-dimensional antenna array, including calculating the unit spacing and arrangement mode; generating the amplitude weighting value of each radiation unit according to the target wave direction; using the two-dimensional multi-beam holographic amplitude weighting technology, the amplitude weighting value of the radiation unit is determined through the two-dimensional multi-beam holographic amplitude weighting technology; generating the corresponding binary discretization coding sequence based on the amplitude weighting value to control the excitation amplitude of each radiation unit; designing a Ka-band two-dimensional holographic beam scanning leaky-wave antenna square array based on liquid crystals, and the radiation pattern of the two-dimensional antenna array is regulated and controlled through the coding sequence to realize multi-beam scanning.
Owner:PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV

Method for generating square array synchronous spiral light beam

PendingCN120405940AOptical elementsSquare arrayLight beam
The invention discloses a square array synchronous spiral light beam generation method. In a traditional method, due to the fact that topological charges of adjacent vortexes in square array vortexes generated by multiple light beams are opposite, the vortexes do not have the same direction and are not completely synchronous. According to the invention, a twelve-beam plane wave interference scheme is adopted, and the twelve-beam plane wave interference scheme comprises outer side quasi-symmetric eight-beam plane waves and inner side symmetric four-beam plane waves. Through accurate control of light beam parameters, a square array single-helix light beam with a synchronization characteristic and a square array double-helix light beam with a synchronization characteristic are generated. The method provides a new technical scheme for the application of the spiral beam array.
Owner:UNIV OF JINAN

3D imaging sonar system and method

PCT designated stageWO2026017438A1Acoustic wave reradiationSquare arrayPoint cloud
A system and method for generating three-dimensional (3D) images using sonar technology comprises a circular phased array to create 3D point clouds from the echoes of a single sonar ping and may be configured to measure Doppler shift. The circular phased array is a circular receiver array that is combined with a single, wide opening angle projector that transmits at least one pulse of acoustic energy. The echoes from this pulse are received by the circular array. The signals from the receiver elements are combined using Delay and Sum beamforming processes to perform spatial filtering with resolution as discussed above. The system and method combine advantages of Mills Cross systems and square arrays, providing high-resolution, instantaneous 3D imaging employing a 1D array, leading to a more efficient and scalable design.
Owner:NORTEK AS

Dual-frequency bipolar integrated oscillator spotlight antenna device

The utility model relates to a dual-frequency bipolar integrated oscillator spotlight antenna device, which comprises a fixed seat, four low-frequency-band half-wave dipoles which are connected with the outer ring of the fixed seat, are arranged in a square array and are positioned on the front surface of the fixed seat, and four high-frequency-band single dipoles which are connected with the inner ring of the fixed seat, are arranged in a square array and are positioned on the front surface of the fixed seat, the two low-frequency-band coaxial cables are respectively connected with the two groups of low-frequency-band half-wave dipoles at the diagonal positions and are positioned on the back surface of the fixed seat; and the two high-frequency-band coaxial cables are respectively connected with the two groups of high-frequency-band single dipoles at the diagonal positions and are positioned on the back surface of the fixed seat. According to the utility model, the four low-frequency-band half-wave dipoles and the four high-frequency-band single dipoles are integrated, the structure is simple, the occupied space is small, the assembly is convenient, the consistency is good, and the production efficiency is high; in addition, through the reasonable oscillator balun structure design, the coupling between the high-frequency oscillator balun and the low-frequency oscillator balun is small, and the antenna can obtain the electrical performance index advantages of high isolation, high gain and the like.
Owner:SHENZHEN MAXWELLHERTZ TECHNOLOGY CO LTD

Photovoltaic power generation array optimization layout and earth-rock volume calculation method

According to the photovoltaic power generation array optimization layout and earth-rock volume calculation method, the optimal inclination angle and orientation of the photovoltaic array are solved based on the sky scattered radiation anisotropy model, and it is ensured that solar radiation is received to the maximum extent; the optimal spacing of the photovoltaic arrays in different sites is determined by establishing a space solid geometric model, and shadow shielding is avoided; and with the maximum generating capacity as a target, establishing a nonlinear programming model to solve the optimal photovoltaic panel and laying mode. Meanwhile, the DEM cross fusion method fusing the regular grid method and the triangulated irregular network method is adopted to estimate the earth-rock volume, and the calculation precision and applicability are improved. Besides, various actual factors such as ground reflectivity, system comprehensive efficiency and the like are also considered, and comprehensive optimization of site leveling, photovoltaic panel model selection and matrix arrangement and installation in the photovoltaic power station construction process is realized by optimizing model selection mathematical modeling. The method has remarkable advantages in photovoltaic array layout optimization, earth-rock volume estimation and a comprehensive layout scheme.
Owner:童欢

Miniaturized high pulse energy raman laser under conditions of optical vortex pumping

This invention provides a miniaturized high-pulse-energy Raman laser under vortex optical pumping conditions, relating to the field of Raman laser technology, and employing n 2 A square array of vortex phase plates serves as the optical element for generating vortex-pumped lasers. By adjusting parameters such as the topological charge of the array of vortex phase plates and the focal length of the array of short-focal-length lenses, the laser power density in the focal region is reduced. The focal region has n 2 A square array is arranged with ring-shaped light intensity distribution units, ensuring that the laser power density of each unit in the focal region is greater than the Raman laser generation threshold and less than the laser-induced breakdown threshold. Therefore, the total Raman laser energy is n times the Raman laser energy generated by each unit. 2 This technology ultimately enabled the output of high-energy, high-beam-quality Raman lasers, with Raman laser pulse energies reaching hundreds of millijoules or even joules.
Owner:DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES

3D imaging sonar system and method

PendingUS20260023176A1Acoustic wave reradiationSquare arrayPoint cloud
A system and method for generating three-dimensional (3D) images using sonar technology comprises a circular phased array to create 3D point clouds from the echoes of a single sonar ping and may be configured to measure Doppler shift. The circular phased array is a circular receiver array that is combined with a single, wide opening angle projector that transmits at least one pulse of acoustic energy. The echoes from this pulse are received by the circular array. The signals from the receiver elements are combined using Delay and Sum beamforming processes to perform spatial filtering with resolution as discussed above. The system and method combine advantages of Mills Cross systems and square arrays, providing high-resolution, instantaneous 3D imaging employing a 1D array, leading to a more efficient and scalable design.
Owner:NORTEK AS

Layout and detection analysis method and device of three-dimensional micro-motion detection array

The invention belongs to the technical field of three-dimensional micro-motion detection, and particularly relates to a three-dimensional micro-motion detection array layout and detection analysis method and device.A1, a three-dimensional micro-motion detection device is arranged, N node seismometers form a square array at equal intervals, the coordinate position of each node seismometer is set as a measuring point, and the measuring point is set as a measuring point; each measuring point is subjected to micro-motion detection by adopting an L-shaped table array; a2, starting N node seismographs in the three-dimensional micro-motion detection platform array to carry out micro-motion detection; a3, exporting the detection data of the N node seismographs, and acquiring the detection data according to the set acquisition starting time and the actual acquisition time; a4, exporting the collected data of the N measuring points, namely the waveform data of the N node seismometers corresponding to each measuring point, and extracting the phase velocity value of the deep part of each measuring point; the three-dimensional micro-motion detection platform array is easier to operate and construct, data utilization is maximized, the early-stage equipment investment threshold and the construction operation threshold are relatively lower, and the exploration precision is higher.
Owner:CHINA GEOLOGICAL SURVEY GEOPHYSICAL SURVEY CENT

Silicon carbide microlens array and preparation method thereof

PendingCN121477376ALensCarbide siliconSquare array
The invention belongs to the technical field of semiconductor photoelectric detectors, and discloses a silicon carbide micro-lens array and a preparation method thereof.The silicon carbide micro-lens array takes a silicon carbide substrate as a base material, a micro-lens array pattern with a high fill factor is formed on the base material, the micro-lens array pattern comprises square array patterns distributed in an array mode, and the square array patterns are arranged on the silicon carbide substrate. A convex microlens is formed in each square pattern. The optical imaging lens has a high optical fill factor and a thin substrate thickness, the light receiving view field range is greatly expanded, and the optical imaging lens has better optical signal focusing capability.
Owner:SOUTH WEST INST OF TECHN PHYSICS

A square-shaped heterostructure terahertz metamaterial sensor device and a preparation method thereof

The application provides a square-shaped heterostructure terahertz metamaterial sensor device and a preparation method thereof. The device comprises a heterostructure sandwich structure which is formed by constructing a multilayer structure on a silicon material. The multilayer structure is composed of a top metal square array unit, a middle dielectric layer and a bottom metal reflection layer. The sensor device controls the full width at half maximum of the plasmonic resonance peak by adjusting the thickness of the dielectric layer to achieve wide resonance enhancement. The metal square array unit adopts two structure size parameters, and the overall architecture scaling realizes the spectral response of different wave bands. When the sensor device works, the terahertz wave is vertically incident on the heterostructure sandwich structure and induces the excitation of the plasmonic mode, so that the signal of the outgoing terahertz wave received by the terahertz receiver presents the super-wideband resonance characteristic. The application can control the spin coating speed of photoresist to customize the wide-spectrum resonance characteristic of the plasmon excited by the square-shaped heterostructure terahertz metamaterial under two different structure scales.
Owner:FUZHOU UNIV

Selective high-absorption solar absorber based on double-layer elliptical structure

The invention relates to the technical field of micro-nano optical devices, in particular to a selective high-absorption solar absorber based on a double-layer elliptical structure, which consists of a plurality of selective high-absorption absorber unit structure periodic arrays, each selective high-absorption absorber unit structure comprises an upper-layer elliptical disk array structure, a middle dielectric layer, a lower-layer square array structure and a metal tungsten substrate, and a local surface plasmon resonance mode can be generated between a metal layer and the dielectric layer through the upper-layer elliptical disk array structure; the built-in square array structure in the metal tungsten substrate can generate a Fabry-Perot resonance mode, high absorption of a target wave band, namely a wave band where solar radiation is located, can be further improved through coupling of multiple modes generated by the lower layer and the upper layer, meanwhile, the absorption rate of a long wave band can be restrained, and selective absorption is achieved. The selective high-absorption solar absorber based on the double-layer elliptical structure has potential application value in the fields of thermophotovoltaic power generation, solar photo-thermal conversion and the like.
Owner:GUILIN UNIV OF ELECTRONIC TECH

A low-altitude wind phased array acoustic detection radar device

This application discloses a low-altitude wind phased array acoustic detection radar device, comprising: a phased array antenna array, a transmitting unit, a receiving unit, a beam control unit, and a data processing unit. The phased array antenna array comprises a plurality of reversible transceiver transducers forming an equidistant square array, wherein transducers in the same row have the same operating frequency, and transducers in different rows have different operating frequencies. The transmitting unit is used to output a transmit signal to the phased array antenna array; the receiving unit is used to receive the echo signal from the phased array antenna array; the beam control unit includes a transceiver switching device for controlling the transceiver switching of the phased array antenna array; and the data processing unit is used to receive and intelligently process the echo signal. The advantages of this application are better intelligent noise suppression, which facilitates obtaining more accurate weather detection information.
Owner:NANJING DAQIAO MASCH CO LTD

A composite structure integrating stealth and electric heating

This invention belongs to the field of electronic functional materials technology, specifically relating to an integrated stealth and electrothermal composite structure. It includes, from bottom to top, a conductive reflective layer, an insulating layer, a resistance wire and a wave-transparent dielectric puncture composite layer, and a surface wave-transparent layer. The resistance wire and wave-transparent dielectric puncture composite layer is an M×M array structure composed of alternating coded structural units I and II. Coded structural unit I is a square array structure composed of multiple resistance wires I arranged parallel to each other on the surface of the wave-transparent dielectric, and coded structural unit II is a square array structure composed of multiple resistance wires II arranged parallel to each other on the surface of the wave-transparent dielectric. Resistance wires I and II are perpendicular. M is an even number. Coded structural units I and II have the same size and equal number. Resistance wires I and II have the same size. This invention has a simple structure, is compatible with conventional composite material structures, and solves the problem of integrating stealth and electrothermal functions.
Owner:XI AN JIAOTONG UNIV

Multi-angle light-pursuing large-area photovoltaic power generation system

The application discloses a multi-angle light tracking large-area photovoltaic power generation system, which comprises a photovoltaic panel square array and multi-angle light tracking support modules; the multi-angle light tracking support modules are arranged in a matrix form and a part of the multi-angle light tracking support modules are provided with active telescopic driving force; in the south-north light tracking state, the multi-angle light tracking support modules provided with the active telescopic driving force and responsible for the south-north light tracking drive the whole photovoltaic panel square array to rotate around a south-north rotating center, and the south-north rotating center is formed by a group of the multi-angle light tracking support modules arranged in the direction parallel to the latitude of the earth; in the east-west light tracking state, the multi-angle light tracking support modules provided with the active telescopic driving force and responsible for the east-west light tracking drive the whole photovoltaic panel square array to rotate around an east-west rotating center. The photovoltaic power generation system not only has the large-area photovoltaic panel arranged in the matrix form, but also can track the light in multiple angles, and has the advantages of high power generation efficiency, simple structure, low cost and the like.
Owner:GUANGDONG TIANZE TENGLONG TECH CO LTD

A spectrum matching method and device based on filter and brightness optimization

The present invention relates to a spectrum matching method and device based on filter and brightness optimization, by adding a filter matrix in front of an artificial light source to obtain an integrated light source, and the filter matrix is ​​a matrix of a plurality of non-electrochromic filters and a plurality of electrochromic filters whose wavelength coverage range includes the visible light wavelength range, and an order of the number of electrochromic filters, which meets the continuity requirement of the spectrum. Finally, the brightness of the luminous spectrum of the integrated light source is optimized and adjusted by an optimization model solving algorithm, so as to achieve a high-precision spectral fitting effect, thereby realizing a high-precision matching between the luminous spectrum of the artificial light source and the target spectrum.
Owner:NINGBO QIPUXIN MICROSYSTEM TECH CO LTD

A square array electromagnetic detection and routing positioning method for submarine cables

The present invention discloses a square array electromagnetic detection and routing positioning method for submarine cables. The method comprises: detecting the position information of a mother ship through a surface positioning system; detecting the electromagnetic signal of the submarine cable through a submarine cable detection system, detecting the vertical distance of the submarine cable detection and positioning platform relative to the seabed plane, the vertical distance relative to the sea level, and the bow deflection angle; detecting the position information of the submarine cable detection and positioning platform relative to the mother ship through an ultra-short baseline positioning system; using a submarine cable relative detection and positioning method to obtain the relative position information of the submarine cable and the square magnetic detector array; using a submarine cable absolute detection and positioning method to obtain the position information of the submarine cable, and realizing routing positioning of the submarine cable. In submarine cable detection operations, the method of the present invention can effectively improve the problems of the difficulty in accurately determining the relationship between the induction coil parameters and the induced electromotive force, inaccurate routing positioning, and improve the detection accuracy on the basis of reducing the complexity of the device.
Owner:ZHEJIANG UNIV +1

Multi-beam-splitting metasurface beam splitter and application thereof

PendingCN120233482APolarising elementsAntennasSquare arrayBeam splitter
The invention provides a multi-beam-splitting metasurface beam splitter and application thereof, the beam splitter comprises a plurality of array units arranged in a plurality of rows and columns, each array unit comprises 16 metasurface unit structures arranged in a 4 * 4 square array, each metasurface unit structure comprises a bottom-layer metal plate, a middle dielectric layer and a top-layer metal pattern which are sequentially stacked from bottom to top, and the top-layer patterns of the four metasurface unit structures in any row / column cover the 0-degree phase, the 45-degree phase, the 90-degree phase and the 135-degree phase of the reference pattern; the reference pattern has C2 symmetry about the Z axis and comprises a first extending part, a linear main body part and a second extending part which are connected in sequence, and the first extending part extends from the two ends of the linear main body part in the-X direction and the X direction respectively. The beam splitter provided by the invention can realize smaller structural volume, is easy to process and integrate, is flexible in design method, can realize high beam splitting uniformity, multi-beam splitting and variable propagation direction, and can realize larger bandwidth.
Owner:CHINA RESOURCES MICROELECTRONICS (CHONGQING) CO LTD

A phased array high-intensity radiation field system architecture and its optimized test method

The present invention discloses a phased array high-intensity radiation field system architecture and an optimization test method thereof, comprising an excitation source and a front-stage power division excitation architecture connected to the excitation source; the front-stage power division excitation architecture comprises a front-stage excitation channel and an amplitude-stabilizing and phase-stabilizing power division network, a plurality of front-stage excitation channels are respectively connected to the amplitude-stabilizing and phase-stabilizing power division network, the amplitude-stabilizing and phase-stabilizing power division network comprises a plurality of power dividers and amplitude-stabilizing and phase-stabilizing cables, and each front-stage excitation channel is connected to a power divider; each power divider is connected to a plurality of final-stage power modules through the amplitude-stabilizing and phase-stabilizing cables, and each final-stage power module is connected to a corresponding antenna array element; a plurality of antenna array elements are symmetrically distributed in a square array, and the present invention reduces the system's demand for total output power by effectively avoiding a shaping recessed area strategy; through the symmetry design of a shaping algorithm, the system's front-stage channel is symmetrically simplified and designed, and the volume of the front-stage excitation channel is reduced, thereby achieving the purpose of significantly reducing the system cost.
Owner:NANJING RFLIGHT COMM ELECTRONICS CORP

Frequency selective surface structure for 5G base station and filtering antenna array thereof

The invention relates to the technical field of communication, in particular to a frequency selective surface structure for a 5G base station and a filtering antenna array of the frequency selective surface structure. The frequency selective surface structure for the 5G base station comprises at least one filtering unit, the filtering unit is in a sheet shape, and the filtering unit comprises an external metal layer, a dielectric substrate, a middle metal layer, another dielectric substrate and another external metal layer which are stacked in sequence; the outer metal layer comprises a plurality of first metal sheets, the first metal sheets are arranged in a square array, the first metal sheets are square metal sheets, aperture windows are formed in the middles of the first metal sheets, gap grooves are formed in the four faces of each first metal sheet, and the aperture windows and the gap grooves are separated through bent connecting parts. According to the frequency selective surface structure for the 5G base station, the requirement of a 5G Massive MIMO antenna base station for a filter in a radio frequency channel can be effectively released, and the frequency selective surface structure has the advantages of being low in loss, wide in scanning angle, good in directional diagram conformality, simple in structure and low in implementation cost.
Owner:TIANDI CHANGZHOU AUTOMATION +1

Arrangement structure of ranging photosensitive receiving array and DTOF ranging sensor

ActiveCN222653110USolve the problem of insufficient distance measurement accuracygood precisionElectromagnetic wave reradiationSquare arrayLight spot
The utility model discloses an arrangement structure of a distance measuring photosensitive receiving array and a DTOF distance measuring sensor, which comprises a surface array and a linear array, and is characterized in that the linear array is arranged on one side of the surface array, and the surface array is a square array or a circle. According to the utility model, through the arrangement of the arrangement structure of the surface array and the linear array and the use of the gray-scale map output for receiving the light spots of the linear array, the problem that the existing DTOF distance measurement is insufficient in near precision can be effectively solved, and the advantages of TOF distance measurement and triangulation distance measurement are combined, so that the overall system is excellent in precision.
Owner:SHENZHEN YUBU TECH CO LTD

A method and system for testing stray light of an AR optical waveguide

ActiveCN118329391BImage enhancementImage analysisSquare arrayWaveguide
The present invention provides a method and system for testing stray light of an AR optical waveguide. The method is applied to a scenario with a square array pattern card and an optical engine to detect an optical waveguide display with poor brightness uniformity. Specifically, a full-white pattern is projected onto the waveguide display, and a self-developed algorithm extracts uniformity compensation parameters. Then, the compensation parameters are applied to the square array pattern card used for stray light detection to calculate the stray light, so as to achieve the purpose of actually measuring the stray light after performing brightness uniformity processing on an optical waveguide product with poor brightness uniformity.
Owner:CETHIK GRP

A transient electromagnetic pulse transmitting array antenna with high synthesis efficiency and optimization method

The present invention relates to a transient electromagnetic pulse transmitting array antenna with high synthesis efficiency and an optimization method, belonging to the field of antenna technology. By using a Vivaldi antenna unit array, the number and spacing of the array antennas are optimized to make the array aperture nearly square, the path difference of the multi-path radiation pulses small, and the synthetic peak electric field in the far-field radiation field high. The antenna uses a dielectric substrate with a low dielectric constant, which reduces the transmission and radiation loss of transient electromagnetic pulses, thereby improving the synthesis efficiency. Compared with linear, rectangular or triangular array arrangements, with a nearly square array aperture, in the far-field radiation, the phase difference caused by the path difference of each antenna unit is smaller, the synthetic electric field is larger, and the synthesis efficiency is higher.
Owner:CNGC INST NO 206 OF CHINA ARMS IND GRP +1

A control method for multi-modal data acquisition for in situ pathology analysis of tumors

The application discloses a control method for multi-modal data acquisition of tumor in-situ pathological analysis, which is executed by a main controller, integrates a system of SC laser, DUV laser, multiplexing beam combiner, endoscopic fiber bundle, FAST fiber bundle and corresponding spectrometer, and realizes automatic acquisition and fusion of three kinds of spectral data. The method comprises the following steps: S1, controlling the SC laser to irradiate a detection point, and controlling the SC spectrometer to receive a reflected light signal and generate a first spectral data set; S2, controlling the DUV laser to irradiate the detection point, and controlling the DUV spectrometer to receive excited Raman and fluorescence signals and generate a second spectral data set; S3, controlling the polarized excitation light to irradiate the detection point, and controlling the SC spectrometer to receive the fluorescence signal and generate a third spectral data set; and S4, based on the first three kinds of data sets, reconstructing single-column signals at a near end of the FAST fiber bundle according to a far end square array arrangement to generate hyperspectral image data of the detection point. The method realizes automatic acquisition of in-vivo, in-situ and multi-dimensional chemical information.
Owner:HANGZHOU INST FOR ADVANCED STUDY UCAS +3

Broadband metasurface antenna applied to Wi-Fi 6E / 7

The invention discloses a broadband metasurface antenna applied to Wi-Fi (Wireless Fidelity) 6E / 7. Comprising two dielectric substrates and three metal layers. The two dielectric substrates are Rogers 4003C, and the three metal layers are a radiation patch, a metal grounding plate and a microstrip line in sequence from top to bottom. The radiation patches are 4 * 3 square arrays, a cross groove is etched in the central radiation patch, the square patches are cut off along diagonal lines at the front edge patch and the rear edge patch, the centers of the left edge patch and the right edge patch are cut off along the transverse direction, and meanwhile the fan-shaped patches are placed at the four corners and cut off along the diagonal direction. A transverse groove is etched in the center of the metal grounding plate, and meanwhile a Y-shaped 50-ohm microstrip line is printed at the bottom of the lower substrate. According to the invention, it can be ensured that the antenna has a high gain, and at the same time, the antenna has a wide bandwidth covering the frequency bands of 5 GHz (5.15-5.825 GHz) and 6 GHz (5.925 GHz-7.125 GHz).
Owner:NANJING UNIV OF POSTS & TELECOMM

A method for scene holographic imaging based on ultrasound

ActiveCN115291225BAcoustic wave reradiationSquare arrayPoint cloud
The present invention discloses a method for scene holographic imaging based on ultrasound, which uses a plurality of ultrasound transmitting probes arranged in a two-dimensional array to form a transmitting array, and transmits ultrasound signals in turn in time division, and receives them after being reflected by an object by a receiving array arranged in a two-dimensional array. According to the delay of the reflected signal, the position of the reconstruction surface is determined, and the echo signal from the reflection point on the specific reconstruction surface to each transmitting probe is solved by a compressed sensing reconstruction algorithm to solve the sparse reconstruction optimization problem, and obtain multiple sets of optimized target reflection point positions and signal strength data, and obtain target point cloud images. And by changing the position and superimposing multiple sets of target reflection point positions and signal strength data, point cloud data is obtained, and the above point cloud data is fitted to obtain the position and shape of the target, forming a holographic imaging of the target, and the method can realize ultrasonic holographic imaging of near-field targets.
Owner:CHINA TOBACCO SICHUAN IND CO LTD +1

Multi-modal data acquisition control method for tumor in-situ pathological analysis

According to the multi-modal data acquisition control method for tumor in-situ pathological analysis, a main controller is used for executing, an SC laser, a DUV laser, a multiplexing beam combiner, an endoscopic optical fiber bundle, a FAST optical fiber bundle and a system of a corresponding spectrograph are integrated, and automatic acquisition and fusion of three kinds of spectral data are achieved. The method comprises the following steps: S1, controlling an SC laser to irradiate a detection point, receiving a reflected light signal by an SC spectrograph, and generating a first spectral data set; s2, controlling the DUV laser to irradiate the detection point, and receiving excited Raman and fluorescence signals by a DUV spectrometer to generate a second spectral data set; s3, controlling the polarized exciting light to irradiate the detection point, receiving a fluorescence signal by the SC spectrograph, and generating a third spectral data set; and S4, on the basis of the first three types of data sets, FAST optical fiber bundle near-end single-row signals are arranged and reconstructed according to a far-end square array, and hyperspectral image data of the detection points are generated. According to the method, automatic acquisition of in-vivo, in-situ and multi-dimensional chemical information is realized.
Owner:HANGZHOU INST FOR ADVANCED STUDY UCAS +3