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Numerical Simulation Experiment Of Tropical Cyclone Observations Of Geostationary Microwave Satellite

Posted on:2019-04-11Degree:MasterType:Thesis
Country:ChinaCandidate:W DuFull Text:PDF
GTID:2428330545963342Subject:Electromagnetic field and microwave technology
Abstract/Summary:PDF Full Text Request
At present,geostationary orbit meteorological satellites are mainly dependent on infrared visible light.The microwave radiometer on geostationary orbit is still a blank in the world.Therefore,the advantages of all-weather and all-weather observations on the atmosphere in the gyro-stationary orbit microwave atmosphere detection become a kind of Trends are helpful for improving the accuracy of weather forecasts in the future.Although the widely used polar-orbiting meteorological satellites have high spatial resolution and rich channel information,the long scanning cycle has limited their early-warning capabilities in severe weather.Compared with polar-orbiting satellites,geostationary-orbiting microwave sensors can obtain large-area continuous-time observations with respect to geostationary,and therefore have great advantages in real-time forecasting of rapidly changing weather(such as typhoons and rainfall),and can obtain more and closer targets.The data set of the scene.In addition,the infrared detector cannot observe the temperature structure,atmospheric humidity structure,and precipitation parameters of the cloud,but the geostationary orbit can just make up for this defect,and the stationary orbit millimeter wave atmospheric sounder can also penetrate the cloud to obtain the internal structure of the cloud.Information can effectively monitor large-scale precipitation structures and their changes.Because the international stationary orbit microwave radiometer is still blank,it is unable to obtain effective target scene data.Therefore,a target modeling method is used to obtain the simulated bright temperature of the target scene as a stationary orbit microwave by combining the instrument information such as orbit height and elevation angle.Radiometer input,and in principle can verify the stationary orbit microwave radiometer.Therefore,accelerating the target modeling and simulation system is a necessary and a challenge.In order to solve the problem of the efficiency of the target modeling and simulation system,this paper adopts a pipelined method to replace the original traditional sequential method.The paper shows the significance of microwave radiometer simulation and its target modeling at the beginning of the paper.The working principles and prerequisites of the flow system and server cluster are introduced.It is pointed out that the target modeling system satisfies the conditions of the flow process and the system is suitable for this purpose.It adopts streamlining to build,and points out that each module of RTTOV is related to each other independently,so it can also be regarded as several different independently completed jobs to submit to different server nodes.After completing the comparison of the efficiency of the traditional sequential method and the streamlining target modeling system,it is pointed out that the speed of the parallel method using streamlining is three times that of the traditional method.And using the optimized method to achieve the target modeling system.Then introduced the working principle of the Win SCP tool,complete the use of Win SCP tools to complete the data transmission system of brightness temperature data generation system and bright temperature data display system.Eventually,parameters such as start and end time of the input in the matlab GUI terminal can be obtained,and then the target modeling system and the display module can be called to obtain a bright temperature display.Finally,the bright temperature display of the earth disk is given.
Keywords/Search Tags:flowing operation, parallel executing, synthetic aperture, geostarionary orbit
PDF Full Text Request
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