CAJ | 학술논문

为了分析北斗卫星导航系统导航定位服务能力，基于2013年国际 GNSS 服务组织（International GNSS Service，IGS）多 GNSS 试验（Multi－GNSS Experiment，M－GEX）、荷兰辉固公司（Furgo）、武汉大学北斗试验跟踪网（BeiDou Experiment Tracking System，BETS）和国际激光服务组织（International Laser Ranging Service，ILRS）等4个跟踪网观测数据，首先进行卫星精密定轨及精度评定，然后采用与事后精密轨道比较、激光检核等方式进行广播星历轨道精度评定，最后分析广播星历轨道对用户定位的影响。结果表明：基于载波相位观测数据的北斗地球静止卫星（Geostationary Earth Orbit，GEO）卫星精密定轨中切向分量存在1～4 m 级的常偏量误差，而基于时间比对和平滑伪距观测数据的广播星历切向分量没有这一现象；北斗卫星精密定轨径向、法向精度分别可以达到0．1 m 和0．2 m；广播星历径向、法向精度分别为0．5 m 和1 m 左右，轨道引起的用户测距误差（User Range Error，URE）平均为0．57 m。
위료분석북두위성도항계통도항정위복무능력，기우2013년국제 GNSS 복무조직（International GNSS Service，IGS）다 GNSS 시험（Multi－GNSS Experiment，M－GEX）、하란휘고공사（Furgo）、무한대학북두시험근종망（BeiDou Experiment Tracking System，BETS）화국제격광복무조직（International Laser Ranging Service，ILRS）등4개근종망관측수거，수선진행위성정밀정궤급정도평정，연후채용여사후정밀궤도비교、격광검핵등방식진행엄파성력궤도정도평정，최후분석엄파성력궤도대용호정위적영향。결과표명：기우재파상위관측수거적북두지구정지위성（Geostationary Earth Orbit，GEO）위성정밀정궤중절향분량존재1～4 m 급적상편량오차，이기우시간비대화평활위거관측수거적엄파성력절향분량몰유저일현상；북두위성정밀정궤경향、법향정도분별가이체도0．1 m 화0．2 m；엄파성력경향、법향정도분별위0．5 m 화1 m 좌우，궤도인기적용호측거오차（User Range Error，URE）평균위0．57 m。
Navigation and position ability of BeiDou navigation satellite system was presented using the data collected by IGS M-GEX,Furgo,WHU BETS and ILRS tracking networks in 2013.Firstly,BDS precise orbit determination was processed and as-sessed with PANDA software which was developed by Wuhan University.Then,RMS of broadcast ephemeris orbit was analyzed by different methods,such as comparison with precise orbit,SLR residual,etc.Finally,URE of broadcast ephemeris orbit was discussed.The experiment results show that along-direction has constant error,the quantity of which is 1-4 m,in GEO precise orbit using carrier-phase observation,but not in broadcast ephemeris using carrier-phase smoothed code observation;RMS in ra-dial-direction and cross-direction are 0.1 m and 0.2 m,respectively.Meanwhile,radial-direction and cross-direction in broadcast ephemeris are 0.5 m and 1 m,respectively,and URE of broadcast ephemeris orbit is 0.57 m.