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.
45results about How to "Reduce the difficulty of engineering realization" 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
Three-port micro-strip power divider with arbitrary power division ratio and phase position output characteristics
InactiveCN103390786AAdjust characteristic impedanceReduce design difficultyCoupling devicesMicrowaveMiniaturization
The invention discloses a three-port micro-strip power divider with arbitrary power division ratio and phase position output characteristics, and relates to the technical field of microwave. The micro-strip power divider is provided with an input port, a first output port and a second output port, and comprises eight transmission lines; a lumped element is connected in series with the transmission line between the input port and the first output port; a lumped element is connected in parallel with the transmission line between the input port and the second output port; the transmission line between the input port and the first output port and the transmission line between the input port and the second output port are isolated from each other through an isolating element. Through the arrangement of the appropriate lumped elements on the transmission lines, the characteristic impedance of the transmission lines can be designed flexibly, so that the arbitrary power division ratio and the phase position output characteristics of the two output ports are achieved, the difficult problem of the construction of the power divider with large power division ratio is solved, and in addition, the high isolation between the small circuit and the output ports is achieved. The three-port micro-strip power divider can be used in an antenna feed network and other functional circuit modules in a radio frequency communication system.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Reflecting surface antenna double-beam forming design method
ActiveCN106450788AConducive to compact designGood compatibilityAntennas earthing switches associationDesign methodsPlane wave
The invention provides a reflecting surface antenna double-beam forming design method. Through creatively introducing a double-beam covering area shape characteristic analyzing step in a designing process, a targeted initial beam acquiring manner and a corresponding antenna structure configuration strategy are made. Based on searching of a reflection plane scattered field focusing point under planar wave excitation according to a conjugate field matching theory, a rotation rule in long axis direction of a longitudinal movement beam of feed sources at two sides of a focusing point is utilized, and wave beam covering matching design is performed. Through feed source position adjustment, axial torsion of the whole reflection surface antenna system is performed, thereby improving beam covering matching property of double beams and performance of a restraining area, and furthermore improving gain of a double-beam coverage area after optimization. According to the reflecting surface antenna double-beam forming design method, according to a wave beam shape characteristic relationship, antenna layout and the like, and design principles such as a wave beam shape is adjusted according to the feed source position. A design order, a parameter selecting principle and technical details in double-beam design are described, and gain improvement of the double-beam coverage area is realized.
Owner:XIAN INSTITUE OF SPACE RADIO TECH
Active phased array radar antenna subarray division method
InactiveCN106772256ARun fastImprove clustering effectWave based measurement systemsAntenna arraysCluster algorithmCanopy clustering algorithm
The invention discloses an active phased array radar antenna subarray division method. The method includes the steps of firstly, acquiring an array element distribution form, an array element distance and an array element number, and calculating a coordinate vector; secondly, acquiring a weighted vector; thirdly, calculating the weighted vector through a genetic algorithm to obtain an initialization clustering center; fourthly, performing clustering division on the initialization clustering center to obtain an active phased array radar antenna subarray division form, and calculating the fitness evaluation function of the active phased array radar antenna subarray division form; fifthly, presetting a threshold, and judging whether the fitness evaluation function exceeds the threshold or not; if not, terminating. The active phased array radar antenna subarray division method has the advantages that the method fuses the genetic algorithm and a fuzzy C-means clustering algorithm, the advantages of the two algorithms brought into full play, and a genetic clustering algorithm is provided.
Owner:LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
Big specific capacity buoyancy force adjustment and emergency self-rescue integrated device and submersible machine
InactiveCN107618643ASufficient subsea tractionSimple structureUnderwater vesselsUnderwater equipmentElectricityEngineering
The invention discloses a big specific capacity buoyancy force adjustment and emergency self-rescue integrated device and a submersible machine. The integrated device includes a water chamber (1), atleast one machine pump valve assembly (3), a detection module and a control module (2); one port of the machine pump valve assembly (3) is communicated with a sea connection port of the submersible machine, and the other port is communicated with the water chamber (1) to achieve injection and discharging of sea water; the detection module and a machine pump assembly (8) are electrically connectedwith the control module (2) separately; the detection module sends detected signals to the control module (2), and the control module (2) controls the machine pump valve assembly (3) to be switched onor switched off to achieve buoyancy force adjustment according to the signals. The big specific capacity buoyancy force adjustment and emergency self-rescue integrated device and the submersible machine have the advantages that not only can the normal buoyancy force adjustment operation capability of the amphibious submersible machine be ensured, but also it can be ensured that the submersible machine can safely float up to be recycled under an emergency situation.
Owner:HOHAI UNIV
Low-frequency mechanical antenna based on electromechanical coupling and signal processing method
ActiveCN111478872APrecise control of carrier phaseReduce intensityMultiple carrier systemsControl theoryElectromechanical coupling
The invention discloses a low-frequency mechanical antenna based on electromechanical coupling and a signal processing method, and mainly solves the problems of poor stability and low modulation efficiency of a traditional mechanical antenna system in the prior art. According to the technical scheme, the method comprises the following steps: the spherical permanent magnet is fixed by the cylindrical fixing sleeve sleeved with the motor spindle in the same diameter through the high-speed bearing, so that the operation stability is ensured; a high-speed servo motor is used for driving a spherical permanent magnet to rotate and radiating same-frequency electromagnetic waves outwards; the spherical permanent magnet is arranged in a magnetic shielding case of a signal loader, amplitude modulation information on a low-frequency magnetic field is loaded by changing the magnetic conductivity of a shielding case, a modulation signal is filtered and amplified by the signal collector, and then synchronization and demodulation are realized in the signal processor. According to the invention, the stability of a mechanical antenna rotation system is improved, a coding and modulation method adapting to a mechanical antenna modulation signal is provided, the signal processing efficiency of the antenna is effectively improved, engineering realization in information transmission application is facilitated, and the method can be used for a low-frequency wireless communication system.
Owner:XIDIAN UNIV
Detector signal readout channel multiplexing method
ActiveCN105182396AReduced Temporal Resolution RequirementsLow costTime-division multiplexTomographyImage resolutionTime-division multiplexing
Owner:RAYCAN TECH CO LTD SU ZHOU
Multi-antenna space-based AIC receiver
ActiveCN106899316AAchieve separationRealize demodulationRadio transmissionFrequency conversionRadio frequency signal
The invention discloses a multi-antenna space-based AIC receiver, and the receiver comprises an antenna array, a radio frequency front end, and a digital processing unit. The antenna array comprises a plurality of monopole antennas, and receives an AIS signal of a marine ship. The radio frequency front end comprises a plurality of radio frequency receiving channels, and completes the amplification filtering and frequency conversion of a radio frequency signal. The digital processing unit employs a blind separation and differential demodulation method to complete the separation and demodulation of multi-time-slot collision signals. The receiver is advantageous in that the number of multi-time-slot collision signals is large; the demodulation method is simple; the receiver can effectively monitor a high-ship-density sea area; the receiver exerts no special requirements for the array shape and aperture, and is especially suitable for a small-satellite platform.
Owner:NO 8511 RES INST OF CASIC
Novel steering mechanism capable of realizing partial steer-by-wire function and control method thereof
ActiveCN110155154AImplementing Decoupled Steering ModeAdjust the angular transmission ratioMechanical steering gearsMechanical steeringSteering columnSteering wheel
The invention discloses a novel steering mechanism capable of realizing partial steer-by-wire function. The novel steering mechanism comprises a steering wheel, an electromagnetic contracting brake, asun gear, a plurality of planetary gears, a gear ring, a planetary carrier, a worm and a decoupling driving mechanism, wherein the steering wheel is fixedly connected with a steering column; the electromagnetic contracting brake is coaxially and fixedly connected with the steering column; the sun gear is coaxially and fixedly connected with the electromagnetic contracting brake; the planetary gears are circumferentially and uniformly arranged on the outer side of the sun gear and are in meshed transmission with the sun gear; the gear ring is arranged concentric with the sun gear, the inner ring is in meshed transmission with the planetary gears, and the outer ring is provided with worm gear teeth; the planetary carrier is rotationally connected with gear shafts of the planetary gears in the circumferential direction, and a tubular column structure vertically extends from the center of one side, away from the steering wheel, of the planetary carrier and is used for being connected witha steering gear; the worm is in meshed transmission with the worm gear teeth of the outer ring of the gear ring; and the decoupling driving mechanism is connected with the worm and is used for driving the worm to rotate. A control method of the novel steering mechanism capable of realizing the partial steer-by-wire function is further provided.
Owner:JILIN UNIV
Landform correction meter wave radar height measurement method based on broadcast automatic mutual supervisory signals
InactiveCN105954746AHigh measurement accuracyCompensation approximationRadio wave reradiation/reflectionElevation angleRadar
The invention discloses a terrain correction meter-wave radar altimetry method based on broadcasting automatic mutual monitoring signals, which mainly solves the problem of low precision in angle measurement and measurement in the prior art. Its implementation steps are: 1. Set up meter-wave altimetry radar and broadcast automatic mutual surveillance signal ADS‑B equipment; 2. Collect radar data, ADS‑B data and radar terminal data; 3. Obtain target elevation angle from ADS‑B data and Calculate the terrain search area; 4. Calculate the estimated value of the elevation angle according to the result of 3 and calculate the absolute error of the measured angle; 5. Obtain the value of the terrain parameter from the minimum absolute error of the measured angle, and smooth it, and then do data fitting to establish the terrain parameter Table; 6. Calculate the target elevation angle and height according to the terrain parameter table. The invention can not only compensate the height measuring error caused by terrain undulations, but also compensate the error caused by the height measuring approximate model, improve the angle measuring and measuring high precision, and can be used for three-coordinate positioning and tracking of airspace targets.
Owner:XIDIAN UNIV
Aircraft attitude control method based on nonlinear feedback and differential tracking
ActiveCN107491080AReduce the numberSolve the difficulty of settingAttitude controlDifferentiatorAttitude control
The invention relates to an aircraft attitude control method based on nonlinear feedback and differential tracking. The nonlinear feedback based on a time-optimal control integrated function is used as an attitude controller, while a rapidity control index is raised by more than 3 times and a control precision index is raised by more than 50%, compared with the background technology, the difficulty of project implementation is greatly reduced, and 4 control parameters are still maintained. An integral chain differentiator is used to design an uncertainty compensator, while the anti-interference ability of the controller is maintained, only one control parameter is needed, but a compensator used by the background technology needs 7 parameters. The whole control scheme needs 5 parameters, the control parameters are reduced by more than 50% compared with the background technology, and the difficulty of parameter setting is greatly reduced. A firefly algorithm is used to carry out the optimization tuning of the controller parameters, the number of setting iterations is reduced by more than 10 times compared with background technology, which has high engineering applicability.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Detector signal readout channel multiplexing method
ActiveCN105816194AHighly integratedReduce complexityComputerised tomographsTomographyElectrical resistance and conductanceMultiplexing
An array detector signal readout channel multiplexing method comprises the steps of dividing array detectors into M groups; each group includes at least two detectors; readout channels are converted into M rows and N columns to readout signals in a rank coding manner, namely the ath row signal and the bth column signal are correspondingly output when the detector at the ath row and the bth column outputs a signal; the signals read out from the row and the column are respectively accessed to different positions of two transmission lines; and determining the source row and column number of the signal according to time difference when the signal reaches two end points of each transmission line, and marking the source detector where the signal is generated according to two groups of time differences of the row and column signals. Application of multiple electronics channels is prevented, and cost and engineering implementation difficulty of an electronics system are reduced; and due to the fact that application of a resistor weighting network is prevented during the channel multiplexing process, the amplitude of the signal cannot be largely changed due to different access points of the signal after multiplexing, and requirements on dynamic ranges of a rear-end readout circuit are reduced.
Owner:RAYCAN TECH CO LTD SU ZHOU
Planar array antenna and array method thereof
InactiveCN106935985AReduce the amount of operationReduce the difficulty of engineering realizationAntenna arrays manufacturePolarised antenna unit combinationsPhysicsAntenna polarization
The invention relates to the field of the array antenna technology, particularly to a planar array antenna and an array method thereof. The antenna comprises four array modules; each array module is formed by array combination of a plurality of wire units; and the four array modules are arranged in four quadrants of a rectangular coordinate system. In the same quadrant, each two adjacent rows of antenna units deviate at a certain distance along a horizontal direction and each two adjacent columns of antenna units deviate at a certain distance along a longitudinal direction, so that all antenna units in the same quadrant are arranged in a quadrangle array manner; and the array modules in each two adjacent quadrants are arranged symmetrically relative to a coordinate axis between the adjacent two quadrants. All modules in the four quadrants are arranged symmetrically, so that the engineering implementation efficiency can be reduced; the antenna units in the antenna array only make translation instead of rotation, so that the original polarization characteristics of the antenna units are kept and thus antenna polarization synthesis can be realized.
Owner:CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
Super-resolution thermal infrared imager and method for acquiring high-resolution infrared image
ActiveCN102661801AImproved resolution performanceQuality improvementTelevision system detailsColor television detailsImaging qualityImaging equipment
The invention relates to a super-resolution thermal infrared imager and a method for acquiring a high-resolution infrared image. The thermal infrared imager comprises an encoding assembly arranged at the most front end, an infrared optical system and a surface array infrared detector focal plane are sequentially arranged at the back of the encoding assembly along the direction of an optical shaft, and a refrigerator is used for refrigerating the surface array infrared detector focal plane and the infrared optical system to enable the both to keep a low-temperature working state. The method for acquiring the high-resolution infrared image comprises the following steps of: converging encoded infrared radiation, transmitting an analog electric signal converted by an infrared radiation signal, converting the analog electric signal, saving an infrared image signal and the like, finally fusing multiple groups of infrared image signals to form the high-resolution infrared image. The super-resolution thermal infrared imager and the method have the advantages of no optical scanning component, improved a resolution performance of the thermal infrared imager, the reliability and the stability of the thermal imager and the image quality of a whole imaging device, light weight, low realization difficulty and low manufacturing and using costs.
Owner:HUAZHONG UNIV OF SCI & TECH +1
Method of identifying fully-polarized active false target
ActiveCN106338715AEffective distinctionEfficient identificationWave based measurement systemsRadarFrequency filtering
The invention provides a method of identifying a fully-polarized active false target based on a frequency diversity system. According to the technical scheme, the method comprises the following steps: after signals received by a channel H and a channel V of radar are synchronously sampled, 2M sub pulse echo signals are separated through digital variable-frequency filtering; then, 2M channels of data are output after matched filtering; and non-coherent integration and target detection are performed, the polarization characteristics of each detection result are extracted, and whether a target is true or false is identified. Based on a frequency diversity system, a radar target and the interference of a fully-polarized active false target can be effectively distinguished and identified by emitting multi-frequency signals and making use of the important characteristic that the polarization scattering property of a radar target is sensitive to the excitation frequency.
Owner:NAT UNIV OF DEFENSE TECH
Crawler type walking mechanism capable of continuously maintaining adsorption capacity based on passive sucker
ActiveCN109466649ASimple structureReduce the difficulty of engineering realizationEndless track vehiclesMeasuring equipmentEngineering
The invention provides a crawler type walking mechanism capable of continuously maintaining adsorption capacity based on a passive sucker, which is free from limitation on vacuum air source equipmentand does not need overlong pipelines and wires. The method for achieving continuous and reliable adsorption on a working surface by utilizing the lever principle achieves reliable and safe walking onthe working surface with load. The mechanism has the advantages of simple structure, low engineering achievement difficulty, wide application range, strong practicability and the like. The mechanism can be conveniently matched and combined with other functional modules (such as cleaning and measuring equipment) to form equipment with different purposes.
Owner:厦门朴蜂智能科技有限公司
Negative-pressure absorption safety device of aerial exterior wall operation robot
The invention discloses a negative-pressure absorption safety device of an aerial exterior wall operation robot. The device comprises an absorption plate and a centrifugal fan; one side of the absorption plate is an absorption surface; a groove is formed in the side, with the absorption surface, of the absorption plate; a ventilation hole is formed in the groove; the centrifugal fan is mounted onthe absorption plate, and is connected with the ventilation hole; and a Teflon contact sheet is arranged on the edge of the absorption surface. The negative-pressure absorption safety device can effectively improve the wind resistance of the aerial exterior wall operation robot, has the advantages of simple structure and convenience to apply, and effectively solves the defects of higher cost and difficult use of an aerial exterior wall operation robot in the prior art.
Owner:厦门朴蜂智能科技有限公司
Modular series combined converter based on multi-phase permanent magnet generator
PendingCN110401366AHigh degree of integration and modularizationIncrease the output voltageAc-dc conversionCooling/ventilation/heating modificationsDc circuit breakerComputer module
The invention relates to a modular series combined converter based on a multi-phase permanent magnet generator. The modular series combined converter comprises n three-phase windings, the alternatingcurrent output by any one of the three-phase windings passes through precharge modules, filters, standard rectifier modules and braking modules of the converter in order and then outputs a direct current, and the direct current is connected with a DC distribution board or a DC circuit breaker; the n groups of the same precharge modules, the n groups of the same filters, the n groups of the same standard rectifier modules and the n groups of the braking modules are respectively arranged in the independent 4 cabinets, and each cabinet comprises a set of cooling system. The modular series combined converter is high in integration modularization degree, high in output voltage and small in engineering implementation difficulty, is used for achieving the controllable electric energy conversion between the AC output of the multi-phase high-speed permanent magnet generator directly connected with a prime mover and a medium voltage DC grid.
Owner:中国船舶重工集团公司第七0四研究所
Spiral resonant ring ultra-wideband simultaneous switching noise suppression power distribution network
InactiveCN105515564AImprove practicalitySimple structureVoltage/current interference eliminationUltra-widebandRealizability
The invention discloses a spiral resonant ring ultra-wideband simultaneous switching noise suppression power distribution network, and aims to provide a power distribution network having the advantages of simple structure, high engineering realizability, no need of slotting a power supply plane, no need of any periodical electromagnetic band gap structure and large simultaneous switching noise suppression depth. The technical scheme for realizing the power distribution network is characterized in that a printed circuit board (PCB) structure is adopted for the power distribution network; local isolating structures are positioned in areas where a noise source input circuit and a noise sensitive circuit on a power supply plane structure are positioned respectively, and etched with spiral resonant rings; the spiral resonant rings are etched on the power supply plane according to a power supply plane distribution structure in order to isolate simultaneous switching noise between a power supply and a ground plane; and an attenuation band is formed in a band frequency band through the resonant effects of the spiral resonant rings in conjunction with coupling resonance among the power supply plane, a ground plane metal layer and a dielectric layer, so that a transmission path of the simultaneous switching noise is blocked; surface waves are suppressed; and the simultaneous switching noise is suppressed.
Owner:10TH RES INST OF CETC
Spatial solar power station for energy distribution collection conversion and beam centralized control emission
ActiveCN109831145ASmall sizeLight in massPV power plantsCircuit arrangementsPower stationEngineering
The invention relates to a spatial solar power station for energy distribution collection conversion and beam centralized control emission in the field of space technology. The solar power station comprises a plurality of independent and identical energy collection conversion devices and a beam centralized control emission device which are all placed on a spacecraft platform. The energy collectionconversion devices are evenly distributed on a circle centered on the beam centralized control emission device, are fixed in relative positions to form a co-located satellite group. The solar power station having a large overall size is converted into multiple groups of identical devices which collect and convert spatial solar power in a distributed manner, are independent of each other, and do not affect each other. Each individual device is small in size and light in weight. The spatial solar power station is not required to be assembled and spliced in orbit, thereby reducing the requirements for carrying and greatly reducing the difficulty in engineering realization.
Owner:SHANGHAI SATELLITE ENG INST
A Three-Port Microstrip Power Splitter with Arbitrary Power Split Ratio and Phase Output Characteristics
InactiveCN103390786BAdjust characteristic impedanceReduce design difficultyCoupling devicesMicrowavePower diode
The invention discloses a three-port micro-strip power divider with arbitrary power division ratio and phase position output characteristics, and relates to the technical field of microwave. The micro-strip power divider is provided with an input port, a first output port and a second output port, and comprises eight transmission lines; a lumped element is connected in series with the transmission line between the input port and the first output port; a lumped element is connected in parallel with the transmission line between the input port and the second output port; the transmission line between the input port and the first output port and the transmission line between the input port and the second output port are isolated from each other through an isolating element. Through the arrangement of the appropriate lumped elements on the transmission lines, the characteristic impedance of the transmission lines can be designed flexibly, so that the arbitrary power division ratio and the phase position output characteristics of the two output ports are achieved, the difficult problem of the construction of the power divider with large power division ratio is solved, and in addition, the high isolation between the small circuit and the output ports is achieved. The three-port micro-strip power divider can be used in an antenna feed network and other functional circuit modules in a radio frequency communication system.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
A wind turbine subsynchronous oscillation suppression method and suppression system
ActiveCN106356874BNo additional costImprove accuracyPower oscillations reduction/preventionClosed loopEngineering
The invention discloses a synchronous oscillation inhibiting method of a wind turbine generator and an inhibiting system. The synchronous oscillation inhibiting method is realized on the basis of a wind power converter; a secondary synchronous oscillation inhibitor based on a secondary synchronous locking phase is added in an original power generation control; a damping component is generated by means of a synchronous coordinate system, and acted on a DQ axis current closed loop; current is dynamically adjusted, electric damping of the unit is enhanced, and thereby happening of secondary synchronous oscillation is inhibited. According to the method, the secondary synchronous oscillation signal is extracted from the electrical quantities, and the method can be adapted to the oscillation frequency and is strong in project practicability.
Owner:NARI TECH CO LTD +4
Electromagnetic levitation structure for maglev train
ActiveCN112140898BSmall currentReduce difficultySliding/levitation railway systemsElectric propulsionSuction forceLevitation
The invention provides an electromagnetic levitation structure for a maglev train. The electromagnetic levitation structure includes a plurality of superconducting levitation frames and a plurality of normal conduction levitation frames arranged at intervals at the bottom of the car body of the maglev train, wherein: the superconducting levitation frame includes The superconducting magnet, the low-temperature Dewar and the first support structure are used to provide the suspension suction force between the magnetic levitation train body and the suspension track; the normal conduction suspension frame includes the normal conduction magnet, the iron core and the second support structure, which are used for The suspension air gap between the car body of the magnetic levitation train and the suspension track is adjusted. In the hybrid electromagnetic levitation structure of superconductivity and normal conduction proposed by the electromagnetic levitation structure used for maglev trains provided by the present invention, the superconducting magnet provides the main magnetic field for suspension, and the constant conduction magnet provides the magnetic field for adjusting the air gap, which has a large levitation air gap Moreover, the advantage of low suspension loss can reduce the requirements for smoothness of the track, which is conducive to line construction and line cost reduction, and is also conducive to the static floating of the maglev train and the simplification of the electromagnet cooling system.
Owner:CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
Synthesis gas washing system adapting to severe working conditions and working method thereof
PendingCN110591766AImprove removal effectReduce the amount of solidsGas dust removalCycloneCyclonic separation
The invention discloses a synthesis gas washing system adapting to severe working conditions and a working method thereof, and relates to the technical field of synthesis gas washing. The system comprises a gasification furnace, a black water treatment system, a first-stage venturi scrubber, a cyclone separator, a second-stage venturi scrubber, a scrubbing tower and a water pump; the water pump communicates with the second-stage venturi scrubber through a second washing water inlet pipe, communicates with the first-stage venturi scrubber through a first washing water connecting pipe, and communicates with the gasification furnace through a gasification furnace chilling water pipe. Black water with high solid content and black water with low solid content are shunted; the solid content of black water entering the washing tower is obviously reduced; the problems of blockage and abrasion of a chilling water system in the starting, stopping and normal operation processes are effectively relieved, the reliability of the chilling water flow quantity and the stability of the liquid level of a chilling chamber are improved, the fault stopping probability possibly caused by the problems isreduced, and the first-stage wetting and cyclone separation equipment is low in engineering implementation difficulty and high in reliability.
Owner:空气化工产品(上海)气化技术有限公司
A dual-beamforming design method for reflector antennas
ActiveCN106450788BConducive to compact designGood compatibilityAntennas earthing switches associationRegular patternLong axis
Owner:XIAN INSTITUE OF SPACE RADIO TECH
A Discrimination Method of Fully Polarized Active False Targets
ActiveCN106338715BEffective distinctionEfficient identificationWave based measurement systemsFrequency filteringRadar
Owner:NAT UNIV OF DEFENSE TECH
Fast adaptive beamforming algorithm based on block matrix
ActiveCN112711013AEasy to handleReduce computational complexityWave based measurement systemsComplex mathematical operationsComputation complexityDimensionality reduction
The invention discloses a fast adaptive beamforming algorithm based on a block matrix. The algorithm mainly involves matrix block processing; a high-dimensional matrix is split into a low-dimensional matrix; overlapped parts in the operation process of the low-dimensional matrix are sorted and combined by using the particularity of adaptive signal processing and a recursive processing method, so that computation complexity can be reduced. According to the algorithm, a data covariance matrix does not need to be inversed, meanwhile, the dimension of the involved matrix is only half of that of an original matrix, so that the engineering implementation difficulty is reduced, a large number of operation resources are saved through dimension reduction operation; the method has a remarkable processing effect for large-scale array signals; and it is verified that the calculation efficiency of the algorithm of the invention is improved by 20% or above compared with a conventional self-adaptive algorithm.
Owner:THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
Space solar power plant with energy distribution collection conversion and beam centralized control launch
The invention relates to a spatial solar power station for energy distribution collection conversion and beam centralized control emission in the field of space technology. The solar power station comprises a plurality of independent and identical energy collection conversion devices and a beam centralized control emission device which are all placed on a spacecraft platform. The energy collectionconversion devices are evenly distributed on a circle centered on the beam centralized control emission device, are fixed in relative positions to form a co-located satellite group. The solar power station having a large overall size is converted into multiple groups of identical devices which collect and convert spatial solar power in a distributed manner, are independent of each other, and do not affect each other. Each individual device is small in size and light in weight. The spatial solar power station is not required to be assembled and spliced in orbit, thereby reducing the requirements for carrying and greatly reducing the difficulty in engineering realization.
Owner:SHANGHAI SATELLITE ENG INST
Noise frequency modulation signal identification method
ActiveCN112543159AAccurate identificationSolve the indistinguishable digital signalModulation type identificationPhase-modulated carrier systemsTime domainTelecommunications
The invention provides a noise frequency modulation signal identification method, and belongs to the technical field of communication. According to the method, the intrinsic characteristics of noise frequency modulation are extracted and judged by utilizing the characteristics of the noise frequency modulation in frequency spectrum and energy distribution, so that the purpose of accurately identifying the noise frequency modulation signal is achieved. Specifically, digital MPSK modulation signal judgment, digital MASK modulation signal judgment, digital MFSK modulation signal judgment and analog modulation judgment are sequentially carried out, and the residual frequency hopping signals are recursively sorted by utilizing the exclusiveness of two frequency hopping signals in the same period. Features are extracted through a signal time domain and a signal frequency domain, parameter estimation is carried out by means of spectral lines and frequency spectrums, noise frequency modulationsignal recognition is carried out according to a priority step-by-step confirmation method, and the method has the advantages of being simple in algorithm, small in calculated amount, easy in featureextraction and low in engineering implementation difficulty.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
multi-antenna space-based ais receiver
ActiveCN106899316BAchieve separationRealize demodulationRadio transmissionFrequency conversionRadio frequency signal
The invention discloses a multi-antenna space-based AIC receiver, and the receiver comprises an antenna array, a radio frequency front end, and a digital processing unit. The antenna array comprises a plurality of monopole antennas, and receives an AIS signal of a marine ship. The radio frequency front end comprises a plurality of radio frequency receiving channels, and completes the amplification filtering and frequency conversion of a radio frequency signal. The digital processing unit employs a blind separation and differential demodulation method to complete the separation and demodulation of multi-time-slot collision signals. The receiver is advantageous in that the number of multi-time-slot collision signals is large; the demodulation method is simple; the receiver can effectively monitor a high-ship-density sea area; the receiver exerts no special requirements for the array shape and aperture, and is especially suitable for a small-satellite platform.
Owner:NO 8511 RES INST OF CASIC
Optical trap system for point source transmittance test
ActiveCN107830992ACompact structureLow costTransmissivity measurementsTesting optical propertiesTransmittanceField of view
The embodiment of the invention discloses an optical trap system for point source transmittance test. The optical trap system adopts four scattering surfaces to form a test environment, and two scattering surfaces are arranged on the side of the test environment to form a cavity. A predetermined scattering surface is provided with a light opening, and the bottom edge of an isosceles triangle prismscattering surface is closely attached to the predetermined scattering surface, so that the scattering surfaces cover the object-side field of view of a system to be tested. According to the opticaltrap system provided by the embodiment of the invention, stray light in the background environment returns to the imaging field of view of the system to be tested after at least six internal wall reflections; the system has a good stray light suppression effect, so that the test accuracy is up to 10 to 10 levels; the optical trap system has the advantages of compact structure, easy engineering realization and low cost.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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