第52卷第1期测绘学报Vol.52,No.12023年1月ActaGeodaeticaetCartographicaSinicaJanuary,2023引文格式:赵爽,王振杰,聂志喜,等.顾及声速结构时域变化的海底基准站高精度定位方法[J].测绘学报,2023,52(1):41-50.DOI:10.11947/j.AGCS.2023.20210326.ZHAOShuang,WANGZhenjie,NIEZhixi,etal.Precisepositioningmethodforseafloorgeodeticstationsbasedonthetemporalvariationofsoundspeedstructure[J].ActaGeodaeticaetCartographicaSinica,2023,52(1):41-50.DOI:10.11947/j.AGCS.2023.20210326.顾及声速结构时域变化的海底基准站高精度定位方法赵爽1,王振杰2,聂志喜2,贺凯飞2,刘慧敏3,孙振21.中国测绘科学研究院,北京100036;2.中国石油大学(华东)海洋空间与信息学院,山东青岛266580;3.中国地质调查局青岛海洋地质研究所,山东青岛266071PrecisepositioningmethodforseafloorgeodeticstationsbasedonthetemporalvariationofsoundspeedstructureZHAOShuang1,WANGZhenjie2,NIEZhixi2,HEKaifei2,LIUHuimin3,SUNZhen21.ChineseAcademyofSurveyingandMapping,Beijing100036,China;2.CollegeofOceanographyandSpaceInformatics,ChinaUniversityofPetroleum,Qingdao266580,China;3.QingdaoInstituteofMarineGeology,ChinaGeologicalSurvey,Qingdao266071,ChinaAbstract:Atpresent,GNSS-Acoustic(GNSS-A)combinedtechnologyiswidelyusedinpositioningforseafloorgeodeticstations.Basedonsoundvelocityprofiles(SVPs)data,theequalgradientacousticray-tracingmethodisappliedinhigh-precisionpositioninversion.However,becauseofthediscretenessoftheSVPsusedintheforementionedmethod,itignoresthecontinuousvariationofsoundvelocitystructureintimedomain,whichworsensthepositioningaccuracy.Inthispaper,thetime-domainvariationofsoundspeedstructure(SSS)hasbeenconsidered,andthecubicB-splinefunctionisappliedtocharacterizetheperturbedsoundvelocity.Basedontheray-tracingtheory,aninversionmodelof“stepwiseiteration&progressivecorrections”forbothpositioningandsoundspeedinformationisproposed,whichconductsthegradualcorrectionofseafloorgeodeticstationcoordinatesanddisturbedsoundvelocity.Thepracticaldatawereusedtotesttheeffectivenessofourmethod.Theresultsshowthattherootmeansquare(RMS)errorsoftheresidualvaluesofthetradi...
