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75 results about "Radiation-Total" patented technology
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Method for remote sensing estimation of net primary productivity of plants
InactiveCN106446564AImprove estimation accuracyAvoid difficultiesImage enhancementImage analysisLongitudePrimary production
Owner:SOUTH CHINA AGRI UNIV
Radiographic imaging apparatus and control method for the same
ActiveUS20140072103A1Radiation diagnosis data transmissionMaterial analysis by transmitting radiationSoft x rayExposure control
An X-ray imaging apparatus includes an FPD and short-circuited pixels. The FPD has pixels arranged in arrays for detecting an X-ray image. The short-circuited pixels detect a radiation dose of X-rays in the FPD. The X-ray imaging apparatus is changed over between first and second operating modes. The first operating mode is selected in case of combining with an X-ray generating apparatus with communication compatibility, and performs an exposure control for controlling a total radiation dose according to a detection signal from the short-circuited pixels. The second operating mode is selected in case of combining with an X-ray generating apparatus with communication incompatibility, and performs control of start synchronization for synchronizing operation of the FPD with the emission start of X-rays according to a detection signal from the short-circuited pixels. Thus, control of the X-ray imaging apparatus is changed over appropriately.
Owner:FUJIFILM CORP
Method for forecasting photovoltaic power generation quantity
The invention provides a method for forecasting a photovoltaic power generation quantity. The method comprises the following steps of: screening and classifying historic power generation quantity data of a photovoltaic power station, excavating the historical data of the photovoltaic power station and reprocessing weather data to obtain a total radiation quantity of the photovoltaic power station; and normalizing the type of the weather, the temperature, the rainfall, the humidity, the season and the total radiation quantity as an input of a forecasting model and calculating through a nerve network so as to forecast the power generation quantity of the photovoltaic power station within 12 hours or 4 hours.
Owner:云南电力试验研究院(集团)有限公司
MCM / HIC circuit total dose irradiation testing method based on low energy X ray
InactiveCN101413988AConducive to anti-radiation reinforcement designReduced dose rateElectronic circuit testingElectricityRadiation-Total
The invention discloses a total dose irradiation test method for an MCM / HIC circuit based on low-energy X-ray. The method comprises the following steps: firstly analyzing the MCM / HIC circuit to determine irradiation sensitive components in the MCM / HIC circuit, then irradiating one or a plurality of sensitive components by an irradiation fixture in the operating state of the MCM / HIC circuit to determine the radiation resistance of the sensitive components in the operating state of the circuit, and finally performing total dose irradiation on the whole MCM / HIC circuit and testing electrical parameters of the MCM / HIC circuit in an on-line monitoring manner. The technology of the invention can be used for achieving anti-radiation total dose level test evaluation on a multi-chip hybrid integrated circuit, thus evaluating the radiation resistance of the whole circuit, and studying the radiation resistance of the sensitive components in the circuit, which is good for the partial anti-radiation reinforcement design of a circuit.
Owner:信息产业部电子第五研究所
Asphalt ultraviolet ray ageing indoor test method
InactiveCN101852717AComprehensive analysis of agingReveal the law of changeWeather/light/corrosion resistanceRadiation-TotalUltraviolet
The invention provides an asphalt ultraviolet ray ageing indoor test method. An ultraviolet ray ageing simulation system is utilized to simulate radiation intensity of strengthened ultraviolet ray under the natural condition in the man-made environment, outdoor ultraviolet ray radiation total effective time is converted into indoor ultraviolet ray radiation total effective time, so that the radiation intensity of ultraviolet ray reaches more than ten times that of the outdoor condition, test result can be obtained in a short time period, ultraviolet ray indoor test is ensured to well simulate the ultraviolet ray outdoor environment, thus having significance for completely analyzing asphalt ultraviolet ray ageing degree, disclosing changing rule in asphalt ultraviolet ray ageing process, researching asphalt ageing principle and determining asphalt ultraviolet ray ageing resistant evaluation indexes in a strong ultraviolet ray area. The test method is reasonable in design, and test operation is simple, convenient and feasible.
Owner:SHANGHAI TONGJI CONSTR QUALITY INSPECTION STATION
Building cooling and heating load calculation method
ActiveCN109977447AAccurate calculationQuick calculationDesign optimisation/simulationSpecial data processing applicationsRadiation-TotalCalculation methods
The embodiment of the invention provides a method for calculating the cooling and heating load of a building. The method comprises the steps that the total heat obtaining amount and the total heat transfer amount of each calculation time step length are obtained; wherein the total heating amount comprises the total indoor heating amount and the total room solar radiation total heating amount; wherein the total heat transfer amount comprises heat transfer amount of a room through an enclosure structure and room ventilation heat exchange amount; and according to the total indoor heating amount,the total room solar radiation heating amount, the heat transfer amount of the room through an enclosure structure and the ventilation and heat exchange amount of the room, a cooling load and a heating load are calculated respectively. According to the method for calculating the building cooling and heating load, the building cooling and heating load can be accurately and rapidly calculated.
Owner:CHINA ACAD OF BUILDING RES
Array antenna total radiation power measurement method and device and computer storage medium
PendingCN112083234AReduce pointsImprove test efficiencyTransmission monitoringAntenna radiation diagramsRadiation-TotalComputational physics
The embodiment of the invention provides an array antenna total radiation power measurement method and device, and a computer storage medium, and the method enables the number of sampling points to bereduced in the measurement process of the total radiation power of an array antenna through the partitioning of the to-be-measured array antenna, and can greatly improve the testing efficiency in some implementation processes.
Owner:ZTE CORP
Omni-directional equivalent source sound source identification method based on solid ball array
The invention discloses an omni-directional equivalent source sound source identification method based on a solid ball array. The method includes the steps that 1, sound field radiation total sound pressure measured by the solid ball array is acquired; 2, the equivalent source intensity q is calculated on the basis of an iterative weighting algorithm, wherein the solving formula is shown in the description, in the formula, W refers to a weighting matrix which is a reversible matrix with non-zero diagonal elements, and lambda is a regularization parameter; S3, the sound pressure at any positionis reconstructed. The method has the advantages that the sound source positioning precision and the sound field rebuilding performance are excellent at medium and low frequency and large measuring distances.
Owner:CHONGQING UNIV
Method for testing antenna omnidirectional radiation total power by using GTEM closet
InactiveCN101477154AReduce test errorEasy to operateElectromagentic field characteristicsRadiation-TotalGTEM cell
The invention discloses a method for testing total power of omnidirectional radiation of an antenna by a GTEM cell, which comprises the steps of: placing an antenna of equipment to be tested on a three-dimensional non-metallic turntable in the GTEM cell first, determining the corresponding relation between various axes of local coordinates of the antenna of the equipment to be tested and various axes of coordinates of the GTEM cell, returning the reflection power of the antenna through a circulator, compensating the output power of a port of the GTEM cell by the reflection power of the antenna, and then calculating the total radiation power of the antenna of the equipment to be tested in a free space by a linear method or a TOP method. The method has simple operation and improves the accuracy of the test.
Owner:BEIJING UNIV OF POSTS & TELECOMM
Line box for aerospace craft star sensor
ActiveCN102752987AReduce in quantityEasy processing and installationSupport structure mountingRadiation-TotalComputer module
The invention discloses a line box for an aerospace craft star sensor. The line box comprises multiple circuit boards with different functions and is characterized by also comprising a frame, a cover plate and a driftbolt. The circuit boards and a power board are fixed in the frame to form a module; the modules have the same appearance size and are mutually overlapped in a direction vertical to the module board to form a whole; the circuit board with a power supply function is mounted below all modules; data transmission connectors matched with each other are arranged between the circuit boards of adjacent two modules, and the circuit boards are inserted together after the assembly; the cover plate is mounted on the top module; and after the assembly, the driftbolt penetrates through the overlapped modules in a direction vertical to the circuit board to fix all the modules together. The line box disclosed by the invention has enough strength and rigidity, good heat radiation, certain resistance against the radiation total dose, compact structure, low weight and good expandability, and is convenient to mount and easy for realization of batch production of the products.
Owner:BEIJING INST OF CONTROL ENG
Distributed fiberoptic sensors
InactiveUS20030025072A1More shapeThin optical fiberRadiation pyrometryMaterial analysis by observing effect on chemical indicatorDosimeterRadiation sensor
A distributed fiberoptic radiation sensor is described which may employ one or more radiation sensor elements distributed in a single optical fiber. Such optical fibers may be placed on surfaces, or even within parts, to unobtrusively measure radiation in precise and even difficult to reach locations. Different sensor elements may respond to different radiation types and wavelength ranges, with each sensor element causing a different wavelength of light to be emitted or absorbed within the fiber. By employing an appropriate combination of detection methods at the ends of the fiber, the distributed sensor may provide type and calorimetric discrimination of radiation incident on one or more distinguishable locations. The radiation information thus detected may be integrated, if desired, to obtain corresponding real-time dose information. With such integration, the device becomes a distributed real-time dosimeter. In another embodiment, the particular radiation sensors distributively employed may undergo permanent change in absorption characteristics. Such a device infers a total radiation dose over a particular period by measuring a change in optical response between the beginning and the end of the particular period.
Owner:HRL LAB
Total dose radiation test method and device for nano field effect transistor
ActiveCN111693838AReduce volatilityTrue reactionIndividual semiconductor device testingRadiation-TotalNuclear engineering
The invention relates to a total dose radiation test method and device for a nano field effect transistor, and the test method comprises the following steps: providing a field effect transistor devicewith statistical significance, carrying out the first electrical parameter test, and obtaining a first threshold voltage; performing radiation processing on the field effect transistor for a plurality of times until a preset total radiation dose is reached, and performing a second electrical parameter test after each radiation processing; performing bias processing on the field effect transistorafter radiation processing to the total radiation dose, and then performing a third electrical parameter test to acquire a third threshold voltage; and judging whether the field effect transistor device meets the product requirement or not according to the defect distribution value obtained by data processing. The test method provides an analysis method for the nano field effect transistor, and effectively solves the problems that the fluctuation amplitude is large due to the quantum effect and the fluctuation effect of the nano field effect transistor, and the traditional technology cannot accurately analyze.
Owner:CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST
Short-term solar radiation prediction method and device based on CNN-LSTM
ActiveCN111260154AHigh precisionEnsure Optimal SchedulingForecastingNeural architecturesRadiation-TotalAtmospheric sciences
The invention discloses a short-term solar radiation prediction method based on CNN-LSTM, and the method comprises the steps: (1) taking a target site and an adjacent site as sample sites, and collecting the meteorological parameters and radiation data of the sample sites; (2) forming a two-dimensional matrix based on meteorological parameters of all sample stations, and reconstructing spatial features; (3) reconstructing time characteristics based on the historical solar radiation sequences of all the sample stations; and (4) respectively taking the spatial features and the time features as inputs of the CNN part and the LSTM part of the CNN-LSTM hybrid model, and predicting the total solar radiation of the target station. The invention further discloses a short-term solar radiation prediction device based on the CNN-LSTM. The method and the device are based on meteorological parameters and radiation data of a target site and peripheral sites. According to the method, the spatial features and the time features are reconstructed and input into the CNN-LSTM hybrid model to predict the solar radiation of the target station, so that the precision of solar radiation prediction is improved, and the optimal scheduling and safe and stable operation of a power system are guaranteed.
Owner:HOHAI UNIV
High efficiency multiplexing
ActiveCN110662944AImprove reflectivityImprove performanceRadiation pyrometryTime-of-flight spectrometersMultiplexingRadiation-Total
In a method for measuring radiation, the radiation is temporally and / or spatially separated by a modulator to direct at least N different combinations of radiation incident on each region into at least two and fewer than N distinct directions. The total intensity of radiation in each direction is measured with a detector for each modulator configuration and the detector outputs are analyzed statistically to obtain information relating to the spectral properties of the radiation. In this way substantially all of the energy received at the entrance aperture of a measurement device is encoded into multiple outputs and the multiplexed output is received by a small number of detectors.
Owner:10103560 CANADA LTD
Method and system for testing the radiation performance of wireless terminal based on data mode
ActiveUS8401506B2Increase authenticityEasy to useResistance/reactance/impedenceRadio transmissionHuman bodyRadiation-Total
Owner:EIGHT DEER VENTURES LLC
Method and apparatus for estimating the dry mass flow rate of a biological material
ActiveUS20130036831A1Accurately determinedEstimates are accurate and reliableMaterial analysis using wave/particle radiationVolume measurement and fluid deliveryTime rangeElectromagnetic radiation
A method and an apparatus for measuring dry mass flow rate for a biological material.—The method steps include conveying the biological material through a measuring station, scanning the biological material with electromagnetic radiation of at least two different energy levels, determining the amount of radiation transmitted through the biological material at said two energy levels, and summing, for each of sad two energy levels, the radiation transmission values over a time frame to summed radiation transmission values. Further, a wet dry mass flow rate is estimated based on the summed radiation transmission values for said two energy level. The moisture content of the biological material is estimated based on the amounts of radiation transmitted through the biological material. The estimated wet dry mass flow rate is scaled in accordance with the estimated moisture content of the biological material, thereby providing an estimate of the dry mass flow rate.
Owner:MANTEX IP AB
High efficiency multiplexing
ActiveUS10585044B2Extension of timeImprove Noise PerformanceRadiation pyrometryTime-of-flight spectrometersMultiplexingRadiation-Total
Owner:10103560 CANADA LTD
Method for preparing safe and nutritional soybean milk
ActiveCN105935084AImprove inactivation efficiencyFacilitate conductionMilk substitutesFood scienceStopped workRadiation-Total
The invention relates to a method for preparing safe and nutritional soybean milk; a motor, a crushing cutter, a heating device and a cup body are provided; the method at least includes the following several stages: (1) a crushing stage including a step of adopting the motor to drive the crushing cutter to rotatingly crush a material and a step of allowing the motor to stop working; and (2) a heating stage including a step of adopting the heating device to heat a liquid in the cup body and a step of allowing the heating device to stop heating. In the method for preparing the safe and nutritional soybean milk, the radiation total heat of the heating device is Q, the soybean milk preparing total amount is V, and the ratio of Q to V is 300-800 kJ / L. Therefore, urease and trypsin inhibitors in the soybean milk can be fully inactivated, and thus the soybean milk is allowed to be more nutritional and safer.
Owner:JOYOUNG CO LTD +1
Super-radiation cooling coating structure and manufacturing method thereof
ActiveCN110117427AReduce the temperatureMitigate the heat island effectClimate change adaptationReflecting/signal paintsElectricityRadiation-Total
The invention discloses a super-radiation cooling coating structure. A city building is covered with the super-radiation cooling coating structure, and the super-radiation cooling coating structure comprises a coupling agent layer, a solar spectrum radiation total reflection layer and an infrared emission layer from inside to outside. The sunlight is reflected through the solar spectrum radiationtotal reflection layer, absorption of energy in the sunlight is reduced, and the heat of the building is radiated outwards through the infrared emission layer. In the two ways, the temperature of thebuilding is lowered, the heat island effect of a city is eased, the consumption of electricity for city refrigeration is reduced, and the situation that harmful smoke is generated due to the heat island effect, and the health of urban residents is harmed is avoided.
Owner:SOUTHWEST COMM CONSTR GRP +2
Photovoltaic power prediction method based on solar radiation climate characteristic recognition
PendingCN111815021AImprove accuracyAvoid situations with large power prediction errorsForecastingInformation technology support systemRadiation-TotalPhotovoltaic arrays
The invention relates to a photovoltaic power prediction method based on solar radiation climate characteristic recognition, which comprises the following steps: 1) defining a weather type index SCF,and classifying and dividing weather state data corresponding to different times according to the weather type index SCF; 2) respectively selecting a slope radiation model for each type of weather state data to predict slope incident total radiation; 3) constructing a photovoltaic cell model to predict the direct-current power generation power of the photovoltaic array; and 4) constructing an inverter model, and calculating according to the photovoltaic array direct-current power generation power prediction value to obtain photovoltaic array alternating-current power generation power, therebyfinishing photovoltaic power prediction. Compared with the prior art, the method has the advantages of flexible application scene, weather type recognition, accuracy improvement, power prediction error reduction and the like.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER
Numerical weather forecast total radiation system error classification calculation method
ActiveCN112418346AImprove accuracyCorrection errorCharacter and pattern recognitionNeural architecturesRadiation-TotalFeature extraction
The invention discloses a numerical weather forecast total radiation system error classification calculation method. The method comprises steps of preprocessing historical power sample data of a photovoltaic power station, including power sequence missing measurement processing and power sequence smoothing processing; feature extraction being carried out from the photovoltaic daily output amplitude and the fluctuation condition, and corresponding daily power sequence features being constructed; constructing an input vector matrix based on a self-organizing neural network, and performing normalization processing; determining a forecast weather type according to the forecast day numerical forecast data; and calculating a numerical weather forecast total radiation system error. Compared withthe prior art, changes of all meteorological data are integrated from the perspective of power characteristics, and the classification result is more suitable for photovoltaic power station historicaldata classification compared with multi-meteorological-factor clustering and has higher accuracy; the influence of NWP misinformation on system error calculation is avoided, and the obtained NWP total radiation system error is more accurate.
Owner:TIANJIN UNIV
On-orbit absolute radiation calibration method and system for satellite remote sensor
ActiveCN113091892ARealize high-precision quantitative inversionImprove calibration accuracyPhotometrySolar simulatorSatellite remote sensing
The invention provides an on-orbit satellite absolute radiation calibration method and system for a satellite remote sensor. The method comprises the steps of: calculating the total radiation flux of sunlight entering a sunlight cone and then entering an on-satellite calibrator according to simulation software; adjusting a solar simulator in a laboratory by adopting a simulation device, so that light sources in an incident integrating sphere have the same total radiation flux; measuring the radiance of the light beam which is dodged by the integrating sphere and expanded by the beam expanding system, and converting the radiance into reflectivity; and substituting the reflectivity and the remote sensor radiation output count value DN into a radiation calibration formula, and calculating the absolute radiation calibration coefficient of the remote sensor on the on-orbit satellite. The invention provides a novel on-orbit satellite absolute radiometric calibration method, which takes sunlight entering a sunlight cone of an on-satellite calibration system and further entering an on-satellite calibrator as a radiometric calibration light source, and has the advantages of high calibration frequency and high calibration precision, and the influence of self radiation performance attenuation, atmospheric condition change and atmospheric radiation transmission model precision of the on-satellite calibration device is avoided.
Owner:SHANGHAI SATELLITE ENG INST
Preparation process of conductive agent of lithium ion battery based on modified graphene
ActiveCN109671951AImprove electrical conductionReduce van der Waals forcesCell electrodesSecondary cellsMass ratioRare earth
The invention discloses a preparation process of a conductive agent of a lithium ion battery based on modified grapheme. The process comprises the following steps of: the step 1, performing activatingtreatment of the 55-60 parts of grapheme, mixing the grapheme with aluminum-based rare earth liquid according to the mass ratio of 1:(1.2-1.8) to be transmitted into a high-pressure reactor, and employing a radiation source with 60Cor to perform radiation processing, wherein the radiation total dose is 4.0-5.0Gy, and the radiation time is 40-50 min; and employing deionized water to wash the mixture after the reaction is finished and performing surface modification processing for standby application. The grapheme is activated to allow the activate to be more fully combined with the aluminum-based rare earth liquid, the aluminum-based rare earth liquid takes Al as a matrix, rare earth metal elements of SC, Y and Tm are added to form a compound, and the compound is prepared with concentratedhydrochloric acid to form rare-earth salts so as to improve the conductive conduction of grapheme, and the two are stable in performance after high-pressure radiation.
Owner:深圳添科材料科技有限公司
Method for determining total dose resistant capacity of device by combining ground and on-orbit environments
ActiveCN107677898AThe results of the total dose resistance assessment are trueAccurately Obtain Radiation Sensitivity ParametersTesting electric installations on transportEnvironmental/reliability testsRadiation-TotalTest dose
The invention relates to a method for determining the total dose resistant capacity of a device by combining ground and on-orbit environments. The method comprises the steps of determining on-orbit ionization radiation total dose environmental parameters of the device, determining a performance test dose point of a ground irradiation test of the device and a dose rate of the irradiation test according to the on-orbit ionization radiation total dose parameters, determining an ionization radiation total dose sensitive parameter of the device through the ground irradiation test, conducting an on-orbit test on the device, detecting variations of the sensitive parameter of the device and the ionization radiation total dose value borne by the device in real time, and thus determining the ionization radiation total dose resistant capacity of the device. The method determines the ionization radiation total dose resistant capacity of the device is determined by combining the ground irradiationtest and the on-orbit environment, and has the characteristic of being more accurate.
Owner:CHINA ACADEMY OF SPACE TECHNOLOGY
Scanning type beam limiting collimation mechanism of X ray source, and control method of scanning type beam limiting collimation mechanism of X ray source
PendingCN111407303AReduce instantaneous radiation doseReduce total radiation doseTomographyDiaphragms for radiation diagnosticsRadiation-TotalRadiation Dosages
Owner:SHANTOU INST OF UITRASONIC INSTR CO LTD
Remote sensing satellite high-resolution camera in-orbit absolute radiometric calibration method and device
PendingCN112595344AHigh precisionGuaranteed Absolute Radiometric Calibration AccuracyImage enhancementImage analysisCamera imageRadiation-Total
The invention discloses a remote sensing satellite high-resolution camera in-orbit absolute radiation calibration method and device. The method comprises the steps of: setting five levels of targets in a preset experiment field region, and uniformly selecting a plurality of sampling points on each target; collecting and measuring the surface reflectance of each sampling point in a preset time period before and after a satellite passes through the five levels of targets through a ground spectrometer; according to the surface reflectance of each sampling point and the acquired other parameters (atmospheric characteristic data, solar diffusion radiation, total radiation data and the like) of a radiation transmission model, determining the entrance pupil radiance of each target in the preset time period before and after imaging of a satellite camera; and calculating to obtain an absolute radiometric calibration coefficient according to the acquired remote sensing satellite high-resolutioncamera image data, the entrance pupil radiance of each target and a preset linear equation model. The technical problem that in the prior art, the requirement for in-orbit absolute radiometric calibration of a high-resolution camera of a high-resolution remote sensing satellite cannot be met is solved.
Owner:SPACE STAR TECH CO LTD
Method for reversing aerogel extinction coefficient from aerogel glass experiment data
ActiveCN106814048AVerify accuracyScattering properties measurementsTransmissivity measurementsRadiation-TotalExtinction
The invention relates to a method for reversing aerogel extinction coefficient from aerogel glass experiment data and provides a method for calculating optical performance of aerogel. An aerogel glass optical model is rebuilt through an interface energy balance method, hourly radiation transmittance under each extinction coefficient is solved by combining hourly sun height angle, transmitted radiation total energy is solved according to experiment data, and squares of differences of hourly transmittance energy and the experiment data are summed; the aerogel extinction coefficient and the transmitted radiation total energy have a function relationship in one-to-one correspondence, so that the extinction coefficient with minimum errors is solved through a golden section method and is the extinction coefficient of aerogel under sunlight; a calculation result is proved to be still accurate and reliable at other time.
Owner:HUNAN UNIV
Anomaly detection method and device for total radiometer and total radiometer
PendingCN112505739AGuaranteed reliabilityImprove accuracyX/gamma/cosmic radiation measurmentRadiation-TotalRadiometer
The invention provides an anomaly detection method and device for a total radiometer and the total radiometer. The method comprises the steps of acquiring the current temperature, the current relativehumidity and the last desiccant replacement time in a cavity of the total radiometer; determining the current absolute humidity in the cavity of the total radiometer according to the current temperature and the current relative humidity in cavity of the total radiometer; determining an anomaly moment according to a relationship between the current absolute humidity and a preset humidity threshold; and determining an anomaly detection result according to a preset desiccant action time threshold, the last desiccant replacement time and the anomaly moment. According to the anomaly detection method provided by the scheme, the reason causing the anomaly of the total radiation meter can be analyzed according to the time difference between the anomaly moment and the last desiccant replacement time and the preset desiccant action time threshold, and the anomaly detection result is determined, so that the accuracy of the anomaly detection result is improved, the anomaly detection efficiency isimproved, and a foundation is laid for guaranteeing the reliability of the total radiometer.
Owner:航天新气象科技有限公司
Delivery device and method for its operation
A system of marked medical containers comprises at least two containers having different properties in at least one respect, and at least one machine-readable marking on each of the containers, each marking being designed to allow discrimination between the difference in properties. Each marking allows discrimination between the difference by having at least one area with different absorbence or reflectance when irradiated with radiation in non-visible frequency ranges. A specific container comprises a syringe cartridge type container for use with a preparation delivery device.
Owner:PHARMACIA & UPJOHN CO
Equivalent method for calculating a radiation near field of circular-aperture antenna
ActiveCN112464459AAvoid restrictionsEngineering applicabilityDesign optimisation/simulationSpecial data processing applicationsMagnetic currentRadiation-Total
The invention discloses an equivalent method for calculating a radiation near field of a circular-aperture antenna, and the method comprises the following steps: 1, setting a plurality of sampling points on an aperture surface of the circular-aperture antenna at certain intervals; 2, calculating a corresponding equivalent magnetic current according to the field distribution at each sampling point;3, calculating a radiation field of the equivalent magnetic current at each sampling point in space; 4, superposing the radiation fields of the sampling points to obtain a radiation total field of equivalent magnetic current on the aperture surface; and 5, calculating a field intensity correction coefficient. The invention is suitable for circular aperture antennas, and can also be popularized and applied to antennas with other shapes and apertures; and the limitation that a geometric model or geometric parameters cannot be obtained is overcome, and engineering applicability is achieved.
Owner:CHINA SHIP DEV & DESIGN CENT
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