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ID:37842343
大小:2.79 MB
页数:7页
时间:2019-06-01
《航空重力GPS测速多粗差探测方法_郑凯》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第45卷第6期测绘学报Vol.45,No.62016年6月ActaGeodaeticaetCartographicaSinicaJune,2016引文格式:郑凯,刘站科,肖学年,等.航空重力GPS测速多粗差探测方法[J].测绘学报,2016,45(6):663-669.DOI:10.11947/j.AGCS.2016.20150481.ZHENGKai,LIUZhanke,XIAOXuenian,etal.MethodofMulti-dimensionalGrossErrorsSnoopingofGPSVelocityEstimationinAir
2、borneGravimetry[J].ActaGeodaeticaetCartographicaSinica,2016,45(6):663-669.DOI:10.11947/j.AGCS.2016.20150481.航空重力GPS测速多粗差探测方法郑凯1,刘站科1,2,肖学年2,张小红11.武汉大学测绘学院,湖北武汉430079;2.国家测绘地理信息局第一大地测量队,陕西西安710054MethodofMulti-dimensionalGrossErrorsSnoopingofGPSVelocityEstimationinAirborneGravi
3、metry1,LIUZhanke1,2,XIAOXuenian2,ZHANGXiaohong1ZHENGKai1.SchoolofGeodesyandGeomatics,WuhanUniversity,Wuhan430079,China;2.TheFirstGeodeticSurveyingBrigadeofNationalAdministrationofSurveying,MappingandGeoinformation,Xi’an710054,ChinaAbstract:Precisionvelocityplaysanimportantrole
4、inairbornegravimetry.Sincetheaircraftinastateofstableflight,wecouldestablishastrictstateequationwithconstantaccelerationmodelforit,thenobtainedpredictedvelocitywhichwasusedforconstructingaprioriresidualQtodetectthegrosserrors.TheoreticalresearchshowedthatQwasinfluencedbytheacc
5、uracyofpredictedvelocityandthemeasurementerrors.AccordingtothestatisticalfeaturesofQcombinedwithIGGⅢprinciple,wecouldlowerthecontributionoftheobservationthatcontainedthegrosserrors.Statictestingwasusedforanalyzingthecharacteristicofmeasurementerrorsaswellastheaccuracyofpredict
6、edvelocityunderthesimulatedidealflightenvironmentwheretheaccelerationwasapproximatetoaconstant,theresultsalsoshowedtherelationshipbetweenthesamplingrateandtheabilityofdetectinggrosserrors.Boththestaticandkinematictestsdemonstratethatnewmethodcanwelldetectthegrosserrorsmallerth
7、an1cycle.Keywords:airbornegravimetry;constantaccelerationmodel;GPSvelocityestimation;IGGⅢscheme;detectionformulti-dimensionalgrosserrorFoundationsupport:TheSpecialScientificResearchFundforPublicWelfareProfessionofChina(No.201512002);NationalNaturalScienceFoundationofChina(No.4
8、1474025)摘要:GPS速度测量在航空重力测量中具有重要的作用。根据飞机平稳飞行的状态,建立了严密的状态方程,利用常加
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