1、西安電子科技大學碩士學位論文Ka頻段雨衰特性的測量和模型研究姓名：肖璐申請學位級別：碩士專業(yè)：檢測技術與自動化裝置指導教師：李小平20100501AbstractAbstractInthisthesis，thecharacteristicsofKabandanditsdevelopmentandapplicationathomeandabroadareintroducedThephysiealpropertyofrainandtheim

2、pactmechanismofradiopropagationbyrainareexpounded；theconceptofraindropsizedistribution，itsmeasuringmethodsandtheformulaofdifferentdistributionsarestatedThecomputationalmethodofspecificattenuationisintroducedandseventypes

3、ofthemostprevalentrainattenuationmodels(CraneGlobalmodel，Assis—EinloflImprovedmodel，SAMmodel，DAHmodel，ITU—Rmodel，UKmodelandChinamodel)aresummedup，alongwiththeircharacteristics，parametersandcomputationalprocedureThemeasur

4、ingsystem’Sstructureaboutthecharacteristicsofrainattenuationandtheexperimentalschemearepresentedindetails，togetherwithdifferentmodules’functionexperimentalparametersandthedetecting，recordingandtheprimaryprocessingmethods

5、ofexperimentaldataThespecificattenuationunderdifferentparametersandraindropsizedistributionsissimulatedinMatlabprograms，discussedandanalyzedwimchartsMeanwhilebaseontheITURmodelandcombingwitllthegeographicinformationabout

6、Xi’aninearthspacecommunicationlink，thespecificattenuationtheequivalentpathwaylengthandtherainattenuationaresimulatedandcalculatedinMatlabprogrammesvarying誦ththeworkingfrequencyrainrateandtheantennaelevationangleTheexperi

7、mentalraindropsizedistributionareanalyzedandcompared、析ththetheoreticaldistribution；theatmosphereattenuationmodelisintroducedandrainattenuationiscalculatedbyusingexperimentaldatainMatlabprogrammesandcompared、析tlltheoretic