Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
204 results about "Space power" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Inflatable fresnel lens solar concentrator for space power
InactiveUS6111190AImprove toleranceReduce quality problemsSolar heating energyCosmonautic vehiclesSpace powerEngineering
A novel, high-efficiency, extremely light-weight, inflatable refractive solar concentrator for space power is described. It consists of a flexible Fresnel lens, flexible sides, and a back surface, together enclosing a volume of space which can be filled with low pressure gas to deploy the concentrator on orbit. The back surface supports the energy receiver / converter located in the focal region of the Fresnel lens. The back surface can also serve as the waste heat radiator. Prior to deployment, the deflated flexible lens and sides are folded against the back surface to form a flat, low-volume package for efficient launch into space. The inflatable concentrator can be configured to provide either a line focus or a point focus of sunlight. The new inflatable concentrator approach will provide significant advantages over the prior art in two different space power areas: photovoltaic concentrator arrays and high-temperature solar thermal conversion systems. Photovoltaic concentrator arrays using the new inflatable lens will be much lighter than prior space concentrator arrays. In addition, for photovoltaic concentrator arrays, the new inflatable lens will eliminate the need for a fragile glass superstrate to support the lens, substantially improving robustness of the lens. Solar thermal concentrator arrays using the new inflatable lens will be much lighter than prior art space concentrators which used parabolic mirrors. In addition, for solar thermal applications in space, the new inflatable lens will eliminate the need for high surface accuracy, which has been a significant problem for prior art concentrators.
Owner:ENTECH INC +1
Integrated millimeter wave active phased-array antenna
ActiveCN103457015AWith structural strengthHave structural requirementsAntenna supports/mountingsRadiating elements structural formsControl signalSpace power
The invention provides an integrated millimeter wave active phased-array antenna. The integrated millimeter wave active phased-array antenna is reliable in performance, ensures that the number of chips can be reduced, and reduces cost. According to the technical scheme, an antenna bearing layer is integrally connected to a feed network through an antenna array surface and a TR assembly; micro-strip patches of the antenna array surface are arranged below the antenna bearing layer according to a rectangular grid array and are connected with power amplifier chips of the TR assembly according to a 8*8 array scale, and every four power amplifier chips are connected with a four-channel integrated phase shifter to constitute a 2*2 sub-array circuit to be integrally connected with the feed network downwards; a radio frequency signal is input to a power dividing network through the feed network and is disseminated into four paths of radio frequency signals through a plurality of four-channel integrated phase shifters, and the radio frequency signals are input into corresponding power amplifier chips, are transmitted to the micro-strip patches and are transmitted; sixteen four-channel integrated phase shifters and sixty-four power amplifier chips are controlled by control signals through a low-frequency signal network to finish radio frequency signal space power synthesis and beam scanning.
Owner:10TH RES INST OF CETC
Rotor and electrical generator
InactiveUS7482720B2Economically fabricatedImproved size to weightMagnetic circuit rotating partsOptical signalSpace powerTension member
A rotor for an electrical generator and a generator incorporating such a rotor, the rotor consisting of a central hub, a radially spaced concentric rim portion with rotor magnetic elements mounted upon it, and a plurality of elongate tension members extending generally between the hub and the rim, maintained substantially in tension so as to maintain the rim substantially in compression. The hub is rotatably driven by an axially spaced power drive means such as a wind or marine current turbine.
Owner:GOLIATH WIND
MMAOP framework applicable to terahertz radar and communication system
InactiveCN103901404AEasy to detectHigh Resolution Imaging CapabilityWave based measurement systemsTransmissionSpace powerSynthesis methods
The invention relates to a MMAOP framework applicable to a terahertz radar and communication system. The implementation mode that a multiplier, a mixer, an array, the quasi-optics and a parabolic antenna are combined is adopted for the MMAOP framework, an all-solid high-power terahertz radiation source is obtained, and meanwhile the MMAOP framework is applicable to the terahertz radar and communication system. A receiving link and a transmitting link of the framework are both obtained in an all-solid mode, and thus the MMAOP framework is good in repeatability and can be integrated and be smaller conveniently. According to the framework, the output power of the terahertz source is raised with an array space power synthesis method, and thus the expansibility is good; a small array can be adopted first to acquire medium output power, as the technology improves, the number of arrays is gradually increased, the output power of a single array element is raised, and thus the radiation power is raised.
Owner:INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
Linear lamp
A linear light fixture, including a longitudinal base adapted to mount on a flat surface, spaced power connectors with electrical contacts secured to the base, and a reflector secured to the base and extending longitudinally in the direction of the surface when the base is mounted to a surface. A replaceable light emitting element includes a rigid circuit board having a front surface and a back surface, a plurality of LEDs mounted on the front surface of the circuit board, a heat sink mounted to the back surface of the circuit board and adapted to conduct heat from the circuit board and LEDs, and first and second circuit board connectors projecting from one of the circuit board sides. The circuit board connectors are spaced apart so as to simultaneously snap-fit in the first and second power connectors, respectively, to selectively provide power to the circuit board through the electrical contacts.
Owner:LIGHTOLOGY
Far-field narrow-band DOA estimation method based on covariance matrix sparse representation
InactiveCN103983944AIncrease the amount of calculationImprove estimation accuracyRadio wave finder detailsAlgorithmSpace power
The invention provides a far-field narrow-band DOA estimation method based on covariance matrix sparse representation. Based on the sparsity on a space domain in the wave arrival direction, a covariance matrix is changed into a sparse representation model, under a module with a matched gridding, a sparse space power spectrum is solved through an optimization minimization method, and the point, corresponding to a support set of the power spectrum, on the gridding is the wave arrival direction angle obtained through estimation. For the condition that the actual wave arrival direction angle is not on the gridding, namely under a model with the mismatched gridding, a first-order Taylor expansion method is adopted to approach the guide vector of the actual wave arrival direction angle, and then the point, obtained through estimation, on the gridding is corrected through a least-square method to achieve higher estimation accuracy. The far-field narrow-band DOA estimation method based on covariance matrix sparse representation can achieve high-accuracy DOA estimation performance on the rough gridding.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
A beamspace multicast transmission method for large-scale MIMO with optimal energy efficiency
ActiveCN109104225AAvoid expectingImprove efficiencyRadio transmissionHigh level techniquesSpace powerMulticast communication
The invention provides a large-scale MIMO beam space multicast transmission method with optimal energy efficiency, which mainly comprises the following steps: a cell base station configures a large-scale antenna array, generates a large-scale beam set by beam shaping to cover the whole cell, and carries out multicast communication with a user on the generated beam. The base station estimates the statistical channel state information of each user according to the received user uplink detection signal, and performs optimal beam space power allocation according to the statistical channel state information. Among them, the proposed energy-efficient beamspace power allocation algorithm mainly utilizes Dinkelbach transform and deterministic equivalence principle, and obtains the global optimal energy-efficient beamspace multicast power allocation matrix by iteratively solving a series of convex optimization problems. And with the movement of users, the statistical channel state information between the base station and each user changes. The base station obtains the statistical channel state information according to different application scenarios, and dynamically implements the optimal energy-efficient multicast power allocation in the beam space.
Owner:SOUTHEAST UNIV
Robust adaptive beam formation method
ActiveCN108181507AImprove robustnessImprove performanceSpectral/fourier analysisStationary noiseSpace power
A robust adaptive beam formation method disclosed by the present invention comprises a step 1 of utilizing a Capon space power spectrum to estimate the average noise power in an angle area only containing the stationary noise, and obtaining a corresponding noise covariance matrix; a step 2 of adopting the Capon space power spectrum to collect all interference information located in an interferencesignal angle area, rejecting a noise component, and reconstructing an interference covariance matrix; then reconstructing an interference and noise covariance matrix according to the noise covariancematrix and the interference covariance matrix; a step 3 of correcting a steering vector of a desired signal of a beam former according to the reconstructed interference and noise covariance matrix, calculating an optimal weight vector, and forming a robust adaptive beam. The method can obtain the more accurate interference and noise covariance matrix and the steering vector of the desired signal,so that the robustness of the adaptive beam formation method on various array error conditions is improved further.
Owner:UNIV OF SCI & TECH OF CHINA
Electrified railway power grid system without negative sequence or spaced power supply networks in whole process
InactiveCN104210385ADoes not cause negative sequence currentIncrease mechanical smoothnessRail devicesPropulsion using ac induction motorsDouble phaseSpace power
Owner:JILIN UNIV
Power dividing horn antenna for space power synthesis and array thereof
InactiveCN101183747ANo fencingRadiation does not produceWaveguide hornsAntenna arraysSpace powerHorn antenna
The invention discloses a power-dividing horn antenna and an array thereof for space power synthesis. The power-dividing horn antenna is composed of a power distribution radiation port, a matching transition section, and a waveguide feeder sequentially seamlessly connected; the power distribution radiation port is composed of a hollow rectangular waveguide and a waveguide feeder. It consists of a shaped metal wedge located in the middle of the wide side of the hollow rectangle, and the shaped metal wedge divides the aperture of the hollow rectangular waveguide into two identical parts. The power splitting horn antenna array used for spatial power combining is composed of at least two power splitting horn antennas closely arranged. When the power splitting horn is used alone, due to the improved electromagnetic field distribution on the aperture, it can obtain higher gain than the ordinary horn antenna of the same aperture. The power splitting horn antenna array avoids grating lobes when the size of the antenna array is increased, effectively Increase the caliber of the space power combining antenna, increase the gain of the space power combining antenna, and improve the efficiency of power combining.
Owner:SOUTH CHINA UNIV OF TECH
Novel broadband radial curve gradient ridge space power distribution/synthesizer
ActiveCN105304998AAchieve broadband frequency coverageIncrease output powerCoupling devicesCircular discElectrical conductor
The invention provides a novel broadband radial curve gradient ridge space power distribution / synthesizer. The novel broadband radial curve gradient ridge space power distribution / synthesizer comprises coaxial curve impedance conversion structures, N paths of impedance gradient radial ridge arrays and rectangular waveguide arrays; each path of impedance gradient radial ridges comprise curve impedance gradient structures and gradient rectangular coaxial internal conductors; the rectangular internal conductors are connected with standard coaxial internal conductors, and signal transmission is realized in non-standard rectangular waveguide; electromagnetic signals are input by the standard coaxial internal conductors, then the signals enter an expanded waveguide disk through the curve gradient coaxial internal conductors, and the signals are distributed into N paths of the coaxial internal conductors at the same amplitude and phase by the radial curve gradient ridge arrays and the coaxial conversion structures; the distributed signals are output by the standard coaxial internal conductors for realizing the distribution and syntheses of the N paths of signals. The power distribution / synthesizer is wide in working frequency bandwidth, high in output power, low in power consumption, high in amplitude-phase consistency, large in the number of the power distribution / synthesis paths, compact in structure and convenient to apply.
Owner:THE 41ST INST OF CHINA ELECTRONICS TECH GRP
Space power synthetic antenna of curve array feed source bifocal parabolic reflecting surface
InactiveCN102104200AHigh Surface Utilization EfficiencyHigh gainWaveguide hornsAntenna arraysSpace powerFluence
The invention relates to a space power synthetic antenna of a curve array feed source bifocal parabolic reflecting surface, comprising a reflecting surface and a feed source array. The reflecting surface of the antenna is a bifocal parabolic reflecting surface formed by a parabola with a shorter focal length on the horizontal plane along another parabola with a longer focal length on the verticalsurface, the feed source array is a parabola curve feed source array formed by aligning a plurality of horn antennae on a parabola which is formed by translating the parabola with the longer focal length to the focus of the parabola with the shorter focal length, the phase of each horn antenna is set according to the Huygens-Fresnel principle, and each horn antenna achieves the maximum in-phase synthesis in the maximum radiation direction. Radiation generated by the space power synthesis of the feed source array irradiates the bifocal parabolic reflecting surface which reflects electromagnetic waves to form a needed wave beam so as to improve the antenna gain. The antenna is simple in structure and has high gain.
Owner:SOUTH CHINA UNIV OF TECH
MIMO (multi-input multi-output) radar waveform synthesis method based on space-time joint optimization
ActiveCN103018732AReduce complexityGood autocorrelation characteristics in time domainWave based measurement systemsMulti inputTime domain
The invention discloses an MIMO (multi-input multi-output) radar waveform synthesis method based on space-time joint optimization. The method mainly solves the problem that existing methods are poor in autocorrelation property of air domain composite signals under the condition of guarantee of space power distribution of transmitted waveforms. The method includes the steps: determining a correlation matrix of a transmitted waveform according to actual demands; generating an initial constant modulus waveform matrix; determining an interested observation azimuth angle, namely an azimuth angle needing improvement of the autocorrelation property; designing a constant modulus waveform phase matrix by means of sequential quadratic programming; and synthesizing a constant modulus waveform matrix according to the phase matrix. The air domain property of the transmitted waveforms and the time domain autocorrelation property of specific direction signals are considered during waveform design, the synthesized waveforms are in expected space power distribution and have fine time domain autocorrelation property in the interested direction, and the method can be used for waveform design of MIMO radar in stages of target detection and tracking.
Owner:XIDIAN UNIV
Space power divider/combiner
The invention discloses a space power divider / combiner. A disc-shaped air column lens adopts a metal disc-shaped parallel plate waveguide comprising an upper metal disc layer and a lower metal disc layer; upper and lower inner surfaces of the metal disc-shaped parallel plate waveguide adopt arc surfaces; a long side of a standard rectangular waveguide is perpendicular to the metal discs of the disc-shaped air column lens; a transition waveguide is in a horn mouth shape; one end of the transition waveguide is connected with the standard rectangular waveguide; the other end of the transition waveguide is intersected with the disc-shaped air column lens; an output end surface of a U-shaped output array is rectangular; an input end surface of the U-shaped output array adopts a semicircular arc surface matched with the disc-shaped air column lens; and a plurality of parallel metal baffles which are perpendicular to the metal discs of the disc-shaped air column lens are arranged in the U-shaped output array. The space power divider / combiner has high output power, wide frequency band and high combined efficiency, and has the advantages that the structure is simple, the processing accuracy requirement is low, the manufacture cost is low, the expansibility is high, heat emission is easy to realize, and the like.
Owner:ZHEJIANG UNIV
Millimeter wave radial waveguide space power allocation/synthesizer
The invention discloses a millimeter wave radial waveguide space power allocation / synthesizer which comprises an upper cavity, a middle cavity and a lower cavity which are assembled sequentially from top to bottom. A standard waveguide cavity is formed in the upper cavity, one end of the standard waveguide cavity is located in the center of the upper cavity, and the other end of the standard waveguide cavity is located in the edge of the upper cavity. A plurality of radial waveguide cavities which are evenly distributed are formed in the lower cavity, and the center of the lower cavity is provided with a multistage ladder matching pin. The center of the middle cavity is provided with a circular hole. The free end of the multistage ladder matching pin penetrates through the circular hole and is located in the standard waveguide cavity in the center of the upper cavity. A gap is reserved between the multistage ladder matching pin and the circular hole. According to the millimeter wave radial waveguide space power allocation / synthesizer, the operation bandwidth of the radial waveguide power allocation / synthesizer is broadened through the multistage ladder matching pin, and the synthetic efficiency in multiplex synthesis is greatly improved compared with that of a traditional technology.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Millimeter wave space power divider and millimeter wave space power combiner
ActiveCN107134626AIncrease output powerHigh synthesis efficiencyCoupling devicesCircular discFisheye lens
The invention discloses a millimeter wave space power divider and a millimeter wave space power combiner. The millimeter wave space power divider comprises a standard rectangular waveguide, a transition waveguide, an air lens and an output array, wherein the air lens comprises two metal semicircular discs which are symmetrically arranged in the vertical direction, the metal semicircular discs reserves a required part and removes a part to which signals cannot reach according to the principle of an improved Maxwell fisheye lens so as to present a semicircular disc shape, the lower surface of the metal semicircular disc located at the upper layer and the upper surface of the metal semicircular disc located at the lower layer are concave arc-shaped surfaces with the same size, a smooth curve of each concave arc-shaped surface is decided by the principle of the improved Maxwell fisheye lens, and the concave arc-shaped surfaces of the two metal semicircular discs respectively form an improved Maxwell fisheye lens. The millimeter wave space power divider has the advantages of high output power, wide frequency band, simple assembly, small structural size, low cost and ability of realizing miniaturization.
Owner:NINGBO UNIV
Single-face double-ridge spreading waveguide space power distribution synthesizer
Provided is a single-face double-ridge spreading waveguide space power distribution synthesizer based on a micro-strip probe array. The synthesizer is provided with a spreading waveguide space power distribution synthesis structure with the characteristics of low loss and wide frequency band. A spreading waveguide is mainly composed of a coaxial step-shaped impedance conversion structure and eight paths of single-face double-ridge rectangular waveguides with high consistency and high-power distribution synthesis efficiency, single-path power amplification of each path of rectangular waveguide can be achieved on a micro-strip circuit through a waveguide-micro-strip probe array conversion structure, and final power synthesis is finished in spreading waveguides. According to the technology, a gain amplification circuit and a power amplification circuit of a power amplifier are arranged outside spreading waveguides, the heat dissipation problem is effectively solved, and system power capacity is greatly improved. The applicable frequency range of the technology can cover a plurality of frequency bands of microwave millimeter waves, an output power can be flexibly adjusted according to bandwidth requirements of different frequency bands through specific power devices.
Owner:CHINA ELECTRONIS TECH INSTR CO LTD
Arrival direction estimation method based on minimum mutual entropy spectrum analysis
ActiveCN103713276APower Spectral Density AccurateHigh spatial spectral resolutionDirection/deviation determination systemsSpace powerPeak value
The invention discloses an arrival direction estimation method based on minimum mutual entropy spectrum analysis. The method comprises steps that: a signal is emitted by an emission energy transducer; echo of an emitted sound signal is received by a reception hydrophone array; modeling of a plane wave model is carried out for the received echo signal, and processing is carried out by utilizing the minimum mutual entropy spectrum estimation method to acquired a space power spectrum estimation value; analysis on the space power spectrum estimation value is carried out, and a corresponding abscissa of the peak value is an estimation angle of the object. According to the arrival direction estimation method, through one-time data sampling employing the array with relatively a few array elements, a spectrum analysis result with high resolution can be acquired. A cepstrum method is further employed, a convergence speed of a minimum mutual entropy spectrum analysis algorithm can be improved through reverse FFT transformation. Compared with a routine space spectrum estimation method, the arrival direction estimation method provided by the invention has advantages of higher resolution and smaller operand, and real-time processing on the array signal can be carried out. The algorithm is independent of the pre-estimated source number, and relatively good tolerance, relatively high resolution and an extremely low sidelobe level are realized.
Owner:ZHEJIANG UNIV
A flexible solar wing elastic stretching rod repetitive unfolding and retracting mechanism
ActiveCN109094821AReduce weightHigh specific powerCosmonautic vehiclesCosmonautic power supply systemsSpace powerBar pressing
The invention relates to a flexible solar wing elastic stretching rod repetitive unfolding and retracting mechanism, which relates to the field of aerospace space mechanism. The invention solves the problems of large folding envelope, heavy weight and low specific power of the prior rigid and semi-rigid solar wing which adopts the unilateral deployment mode. The two force transmission devices of the invention are fixed on the mounting base side by side, A deployment bar is arranged on both sides of the flexible solar blanket, A flexible solar blanket is connected to the deployment lever by a rope, At that end of the flexible solar blanket is wound up on a solar blanket take-up roll, At that end of the unwrap bar is wound up on the unwrapping bar take-up drum, A distal end of that deployment bar is press against the deployment bar retracting roll by a deployment bar pressing device, Four unfolding bar guides correspond to four unfolding bars one by one. An initial driving device is arranged inside the inner guide cylinder of the unfolding bar guide. An initial pressing and releasing device is installed at one end of the force transmission device of the unfolding roller, and an electric recovery driving device is installed at the other end of the force transmission device of the unfolding roller. A space power supply for a spacecraft is provided.
Owner:HARBIN INST OF TECH
Distance measuring method for power line
InactiveCN101592484AGuaranteed stabilityEnsure safetyOptical rangefindersPicture interpretationSpace powerImage pair
The invention discloses a distance measuring method for a power line, which comprises the following steps: (1) acquiring sequence images of the power line and a crossover object under the power line to form a stereoscopic image pair; (2) extracting an image space power line in the stereoscopic image pair; (3) determining spatial coordinates of a power line point; (4) using a plumb line track method to search whether the crossover object exists in a certain distance under the power line point, and calculating the coordinates of the crossover object when the crossover object exits; and (5) according to the coordinates of the crossover object and the power line point, calculating the vertical distance of the crossover object and the power line point. The method can accurately identify the power line in the image and measure the spatial coordinates of the power line, automatically judge whether the crossover object exists in the safe distance under the power line, measure the vertical distance between the power line and the crossover object at the lower part in real time, discover the potential safety hazard, and ensure the smoothness and safety of a power supply line.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER +2
Terahertz quasi-optical frequency multiplier
ActiveCN102904528AAchieving coherent superpositionReduce volumeOscillations generatorsSpace powerHarmonic
The invention provides a terahertz quasi-optical frequency multiplier, comprising a first blocking capacitor, a filter, a frequency multiplying antenna and a quasi-optical device, wherein the frequency multiplying antenna comprises an antenna and a nonlinear device, an input signal passes through the first blocking capacitor and the filter and then is loaded on the frequency multiplying antenna, and each harmonic component of the input signal is restrained by the filter after the input signal passes through the filter; the nonlinear device of the frequency multiplying antenna generates harmonic components to the input signal loaded on the frequency multiplying antenna; the antenna of the frequency multiplying antenna radiates required output signals; and the output signals are endowed with better directivity by virtue of the quasi-optical device. The terahertz quasi-optical frequency multiplier is small in size and light in weight, can easily implement space power synthesis and can serve as an efficient odd frequency multiplier.
Owner:杭州太睿康科技有限公司
Electrochemical cell
ActiveUS20110024295A1Improve conductivityImprove the immunityFuel cells groupingWater management in fuel cellsElectrical batterySpace power
An electrochemical cell having two or more diffusion bonded layers, which demonstrates a high degree of ruggedness, reliability, efficiency and attitude insensitiveness, is provided. The novel cell structure simplifies construction and operation of these cells. Also provided is a method for passive water removal from these cells. The inventive cell, as well as stacks made using these cells, is suitable for use in applications such as commercial space power systems, long endurance aircraft, undersea power systems, remote backup power systems, and regenerative fuel cells.
Owner:INFINITY FUEL CELL & HYDROGEN
Plane space power distribution/synthesis magnifier
The invention relates to a plane space power distribution / synthesis magnifier which comprises a substrate and at least one group of power distribution / synthesis devices, wherein the power distribution / synthesis devices are arranged on the plane of the substrate, a plurality of levels of steps are arranged on the output ends of microstrip power distributors of the power distribution / synthesis devices, one output terminal is introduced on each level of steps and is connected with the microstrip line of the magnifier by an arc-shaped microstrip line of 90 degrees, a plurality of levels of steps are arranged on the input end of a microstrip power synthesis device, and one input terminal is introduced on each level of steps and is connected with the microstrip line of the magnifier by the arc-shaped microstrip line of 90 degrees. The invention has simple structure and easy processing and is beneficial for integrating with other components and parts in a circuit. The magnifier is placed at the side edge of a main signal channel by introducing the arc-shaped microstrip line of 90 degrees, a chain type structure is formed, a distance between signal channels can be adjusted according to actual conditions, and a sufficient space is provided for placing a magnifier chip and other bias elements.
Owner:SOUTH CHINA UNIV OF TECH
Rotor and electric generator
InactiveCN1539191AMagnetic circuit rotating partsMagnetic circuit stationary partsSpace powerEngineering
Owner:格莱斯风能公司
One-time corrosion process for multi-junction gallium arsenide solar batteries
ActiveCN104393115ASolve the problem of cumbersome corrosion stepsImprove corrosion accuracyFinal product manufacturePhotovoltaic energy generationResistElectricity
The invention belongs to the field of new energy and space power supplies and relates to a one-time corrosion process for multi-junction gallium arsenide solar batteries. Partition grooves / scribing grooves are produced through a single corrosion liquid by one-time corrosion. The process comprises a photo-resist protection process and a one-time corrosion process. Partition groove corrosion is a key process for producing integrated bypass diodes. The process is characterized in that graphs are produced through a photo-resist masking process, and the substrate layer is corroded through the single corrosion liquid by one-time corrosion; front epitaxial layer and back substrate materials can be corroded simultaneously through one-time corrosion; the partition grooves and scribing grooves are produced by one-time corrosion simultaneously; solar batteries can be protected against space damage such as 'hot spot' and the like by the bypass diodes produced through processes of one-time corrosion, electrode evaporation, alloy and the like. The scribing grooves are produced by one-time corrosion and are cut directly, so that the battery electric performance caused by the edge mechanical damage due to direct cutting of the scribing grooves can be prevented.
Owner:SHANGHAI INST OF SPACE POWER SOURCES
Method for estimating elevation angle of intelligent antenna multi-subarray system
ActiveCN101615943AEstimates are accurateEasy to implementSpatial transmit diversityMulti-channel direction-finding systems using radio wavesElevation angleSpace power
The invention discloses a method for estimating an elevation angle of an intelligent antenna multi-subarray system, comprising the following steps: each antenna subarray estimates a channel of a received user terminal signal, computes a space covariance matrix of the received user terminal signal and then determines all maximal values of a space power spectrum of the received user terminal signal according to the space covariance matrix; taking one maximal value of the maximal values of the space power spectrum, which is greater than a threshold value, as an effective value, and determining the elevation angle of the signal sent by a user terminal by the effective value; and reporting the elevation angle determined by the antenna subarray with maximal average single-channel receiving power to a network side. The invention is easy to realize, and an elevation value of the reported elevation angle is more accurate.
Owner:ZTE CORP
Power frequency digital notch device and method based on frequency track
ActiveCN102176667AAccurate collectionReduce distractionsDigital technique networkUltrasound attenuationSignal on
The invention relates to the technical field of digital notch, in particular relates to a power frequency digital notch device and method based on frequency track. The power frequency digital notch method based on the frequency track comprises the following steps: singly collecting power frequency signals and adaptively regulating, analyzing and comparing; and if a comparison result exceeds a set threshold, regulating the coefficient of a power frequency notch filter, and notching a human signal so as to obtain a filtering result, and outputting the filtering result. According to the method, the space power frequency signal can be correctly acquired in real time, the notch is timely traced, the interference of the power frequency signal on a useful signal is effectively attenuated, and the problems that digital notch attenuation amplitude is in lack because of frequency fluctuation of power frequency and the like are solved. In a clinic application, through the device and the method, a wave form is smooth, which is beneficial to correct diagnosis, thereby avoiding misdiagnosis.
Owner:EDAN INSTR
Method for extracting dimension characteristics of underwater target based on space similarity
InactiveCN103278810AIn line with intuitive understandingImprove reliabilityWave based measurement systemsSpace powerVisual recognition
The invention provides a method for extracting the dimension characteristics of an underwater target based on space similarity. The method comprises the following steps of calculating the conventional beamforming space power spectrum of a distribution source based on ripple signals of the underwater target, utilizing point target space power spectra obtained by a space similarity theory and a classic theory to perform space similarity measurement, and finishing classification and recognition according to previously established space measurement threshold standards so as to extract the dimension characteristics of the underwater target. The method for extracting the dimension characteristics has the advantages that the influence of irradiation angles, base arrays and target distance parameters on the dimension characteristics is considered so as to conform with the visual recognition of the eyes to the dimensional target; three space similarity measurement methods are adopted in the process of extracting the dimension characteristics of the target, the defects of a single method are overcome, and the extracting and recognition reliability of the dimension characteristics of the underwater target is improved; and the conventional beamforming (CBF) method is used for calculating the space power spectrum of the distribution source target, and the space similarity calculation methods are relatively simpler and favorable to engineering realization.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Robust beam forming method based on steering vector and space power estimation
ActiveCN109450499AAccurate estimateImprove performanceSpatial transmit diversityTransmission monitoringCorrelation coefficientSpace power
The invention provides a robust beam forming method based on a steering vector and space power estimation, so as to improve the robustness of random errors on an incoming wave direction and to realizeaccurate signal steering vector estimation under the condition of interference in a main lobe of a beam. The invention provides a signal plus interference covariance matrix reconstruction algorithm,which introduces a correlation coefficient to serve as a signal subspace selection criterion, reconstructs a sampling covariance matrix signal plus interference subspace, and performs alternate projection in combination with a covariance matrix containing a signal subspace and obtained by signal angle interval discrete sampling, so as to perform the accurate signal steering vector estimation and to design a robust adaptive beam former under the condition of interference in the main lobe of the beam.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Stretched Fresnel Lens Solar Concentrator for Space Power, with Cords, Fibers, or Wires Strengthening the Stretched Lens
This invention includes a flexible Fresnel lens assembly which can be efficiently stowed into a small volume, and then deployed with a mechanism, including structural elements, that provides tensioning at the ends of the lens assembly to position and support the lens assembly in proper position relative to a photovoltaic receiver, onto which the lens assembly focuses sunlight for conversion into electricity. The flexible stretched lens assembly includes a transparent prismatic polymer film, comprising a refractive optical element, attached to flexible cords, fibers, or wires that carry the bulk of the tension load in the stretched lens assembly when it is deployed in its final functional position. This present invention represents a critical and mission-enabling improvement to an earlier stretched lens array invention described in U.S. Pat. No. 6,075,200 (Reference 1).
Owner:ONEILL MARK JOSEPH
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com