GPS接收機(jī)天線相位中心偏差檢測技術(shù)研究.pdf

1、中南大學(xué)碩士學(xué)位論文GPS接收機(jī)天線相位中心偏差檢測技術(shù)研究姓名：陳桂珍申請學(xué)位級別：碩士專業(yè)：大地測量學(xué)與測量工程指導(dǎo)教師：張學(xué)莊20060501ABSTRACTPhasecenteroffsetsofGPSreceiveingantennasareasignificanterrorsourceinGPSpositioningAGPSgeodeticsolutionforabaselineprovidesthevectorbetwee

2、nthephasec：entersoftheantenllaSateitheroftbebaselineHowevertherealphasecenterisnotastablepointForanygivenGPSantennathephasecenterwillchangewiththechangingdirectionofthvsignalfromasatelliteThesephasecentervariations(PCVs)

3、canrangefromafewmillimeterstoservalcentimetersCalibratingtheantennaphasecenterisparticularlyimportanttohighprecisionGPSapplicationsNotonlyreceiverantennaoffsetsbutalSOelevationdependentandevenazimuthdependentvariationsof

4、theantennaphasecenterhavetobetakenintoaccountforhighprecisionGPSapplicationsToday，threemajorGPSantennacalibrationmethodsareavailable：therelativefieldcalibrationsusingtheGPSdamcollectedonshortbaselines。theabsolute觸dcalibr

5、ations，wheretheGPSantennaisrotatedandtiltedbyarobot’andcalibrationmeasurementsinananechoicchamberAthome。therelativefieldcallbmtio璐havebeenwidelyusedtotestthephasecentreoftheGPSalKe蜘aaAndtherearefewpeopletostudyOQautomati

6、ccalibrationsContraposingt0thesituationtheauthorofthispaperwillmainlystudythetestoftheGPSantennaphasecenterThemajorcompletedresearchesinclude：(1)，ThecharaaeristicsofGPSantennacalibrationmethodsexistedpresentlyhasbeencomp

7、aredandsummarizedinthispaper(2)，Bysummarizingthedataprogressingapproachesofthedomesticrelativefieldcalibrations，planegeometrymethodissupplementedThroughexperimentalanalysis。leastsquaremethodisproposedtOcalculatetheoffset

8、softheantennaphasecellter(3)、Based011thefactthattherelativefieldealibratio地ofourcountryneedmanualworktheautomatedfieldcalibrationsystemiscreativelypresentedinthispaperFurthermore，thefeasibilityofthesystemhasbeencarriedou