第11卷第1期导航定位学报Vol.11,No.12023年2月JournalofNavigationandPositioningFeb.,2023引文格式:刘太宗,何秀凤,贾东振,等.观测值域恒星日滤波方法在高铁路基变形监测中的应用[J].导航定位学报,2023,11(1):39-47.(LIUTaizong,HEXiufeng,JIADongzhen,etal.Applicationofsiderealfilteringinobservationdomainindeformationmonitoringofhighspeedrailwaysubgrade[J].JournalofNavigationandPositioning,2023,11(1):39-47.)DOI:10.16547/j.cnki.10-1096.20230106.观测值域恒星日滤波方法在高铁路基变形监测中的应用刘太宗,何秀凤,贾东振,詹伟(河海大学地球科学与工程学院,南京211100)摘要:针对高铁环境下对多路径误差削弱方法分析不足的问题,提出一种高铁路基变形监测方法:利用哈佳铁路路基实测北斗卫星导航系统(BDS)观测数据,采用双差、单差和非差观测值域恒星日滤波方法,提取变形监测中多路径相关的周期性误差,以消除多路径误差对变形监测结果的影响。实验结果表明:3种方法在东方向上的定位精度分别提高了26.90%、36.82%和27.41%,北方向提高了37.31%、46.10%和37.50%,高程方向提高了40.41%、42.52%和40.20%;单差方法对多路径效应改正的效果最好,更适用于高铁路基变形监测中多路径效应的削弱。关键词:北斗卫星导航系统;变形监测;多路径误差;观测值域;恒星日滤波中图分类号:P228文献标志码:A文章编号:2095-4999(2023)01-0039-09ApplicationofsiderealfilteringinobservationdomainindeformationmonitoringofhighspeedrailwaysubgradeLIUTaizong,HEXiufeng,JIADongzhen,ZHANWei(SchoolofEarthSciencesandEngineering,HohaiUniversity,Nanjing211100,China)Abstract:Aimingattheproblemofinsufficientanalysisonmultipatherrorreductionmethodsunderhigh-speedrailenvironments,thepaperproposedadeformationmonitoringmethodofhigh-speedrailwaysubgrade:theBeiDounavigationsatellitesystem(BDS)observationdataofHa-jiarailwaysubgradewereusedtoextractthemultipathdependentperiodicerrorsindeformationmonitoringbythemethodsofdouble-difference,single-differenceandnon-differencesiderealfilteringinobservationdomain,inordertomitigatetheinfluenceofmultipatherrorsondeformationmonitoringresults.Experimentalresultshowedthat:thepositioningaccuracyofthethreemethodswouldincreaseby26.90%,...