第52卷第1期测绘学报Vol.52,No.12023年1月ActaGeodaeticaetCartographicaSinicaJanuary,2023引文格式:王笑蕾,牛紫瑾,何秀凤,等.沿海沉降变化GNSS定位及GNSS-IR组合监测[J].测绘学报,2023,52(1):32-40.DOI:10.11947/j.AGCS.2023.20210414.WANGXiaolei,NIUZijin,HEXiufeng,etal.MonitoringofcoastalsedimentationchangesbasedonGNSSandGNSS-IR[J].ActaGeodaeticaetCartographicaSinica,2023,52(1):32-40.DOI:10.11947/j.AGCS.2023.20210414.沿海沉降变化GNSS定位及GNSS-IR组合监测王笑蕾,牛紫瑾,何秀凤,李润川河海大学地球科学与工程学院,江苏南京211100MonitoringofcoastalsedimentationchangesbasedonGNSSandGNSS-IRWANGXiaolei,NIUZijin,HEXiufeng,LIRunchuanSchoolofEarthSciencesandEngineering,HohaiUniversity,Nanjing211100,ChinaAbstract:CoastalsettlementmonitoringusuallyusestheGlobalNavigationSatelliteSystem(GNSS)positioningtechnologytomeasureatpresent.However,itonlyreflectsthesedimentsettlementbelowthestationbase,andthesettlementinformationabovethestationbasecannotbeobtained.Incoastalareas,sedimentsaccumulaterapidly,andsettlementchangesgreatlyundercompactionandalluvium.Therefore,itisnecessarytomonitorthesettlementabovethebaseinordertoobtaintheoverallcoastalsettlementinformation.WiththecontinuousdevelopmentofGNSS,anewGNSSinteractivereflectometry(GNSS-IR)technologyhasbeenprovedtobeabletousemultipatheffectforreflectorheightmonitoring.BecausethebaseofGNSSstationisdeepandthebaselengthremainsunchanged,thegroundheightchangeobtainedbyGNSS-IRtechnologycanreflectthesettlementabovethebase.Therefore,thepaperuseGNSS-IRtechnologytomeasurethesubsidencechangesabovethebase;Atthesametime,thesettlementbelowthebasechangeisobtainedbyusingGNSSpositioningtechnology,andthenthetotalsettlementchangeisobtainedbyusingGNSS-IRandGNSSpositioningtechnology.TheMississippiRiverDeltawithlargesedimentthicknessisselectedasthetestarea,andthedataofFSHS,GRISandMSINstationsareselectedforanalysis.TheresultsshowthatGNSS-IRcanbeusedtomeasurethesettlementrateabovethebase,andthecorrectedtotalsettlementrateisequivalenttotherelativesealevelriserate,whichcanbette...
