模糊度固定的北斗卫星多系统融合精密轨道确定
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摘要
利用全球分布的IGS和MGEX站多模观测数据,研究了北斗卫星多系统融合双差动力学精密定轨方法,提出了适应北斗系统的双差模糊度固定策略。结合实测数据,对比了单系统与多系统融合、模糊度固定解与浮点解的定轨效果。结果表明:相比单系统定轨,多系统融合定轨能有效改进IGSO和MEO卫星轨道精度,但对于GEO卫星,多系统融合定轨并无优势;利用改进的模糊度固定策略对IGSO和MEO卫星双差模糊度进行固定,有效提高了长基线模糊度固定率,整体固定成功率由40%提高到60%以上;模糊度固定对定轨精度改进作用明显,IGSO和MEO卫星三维定轨精度分别提高了48%和36%,达到0.048 m和0.066 m。
Using the global distributed IGS and Multi-GNSS experiment(MGEX)data,a method of multiGNSS integrated double-difference precise orbit determination(POD)of BeiDou navigation satellites is studied.Then a specific double-difference ambiguity fixing strategy for BDS is proposed.The orbit determination precision of using single system and multi-GNSS,as well as ambiguity-fixed solution and ambiguity-free solution,are compared based on real observation data.The results show that,compared with single system processing,the multi-GNSS integrated method can effectively improve the orbit precision of IGSO and MEO,but except for GEO.The result of IGSO and MEO ambiguity fixing by the proposed strategy is well.The ambiguity fixing success rate has been improved significantly,especially for long baselines.The ambiguity fixed success rateimproves form40% to 60% or more on the whole.Ambiguity fixing shows a positive contribution to orbit accuracy of IGSO and MEO from the overlapping RMS with that of the free solution for comparison.The3 D-RMS of IGSO could reach0.048 m,and that of MEO could reach0.066 m.
Using the global distributed IGS and Multi-GNSS experiment(MGEX)data,a method of multiGNSS integrated double-difference precise orbit determination(POD)of BeiDou navigation satellites is studied.Then a specific double-difference ambiguity fixing strategy for BDS is proposed.The orbit determination precision of using single system and multi-GNSS,as well as ambiguity-fixed solution and ambiguity-free solution,are compared based on real observation data.The results show that,compared with single system processing,the multi-GNSS integrated method can effectively improve the orbit precision of IGSO and MEO,but except for GEO.The result of IGSO and MEO ambiguity fixing by the proposed strategy is well.The ambiguity fixing success rate has been improved significantly,especially for long baselines.The ambiguity fixed success rateimproves form40% to 60% or more on the whole.Ambiguity fixing shows a positive contribution to orbit accuracy of IGSO and MEO from the overlapping RMS with that of the free solution for comparison.The3 D-RMS of IGSO could reach0.048 m,and that of MEO could reach0.066 m.
引文
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[18]杜兰.GEO卫星精密定轨技术研究[D].郑州:解放军信息工程大学,2006:1-6.DU Lan.A Study on the Precise Orbit Determination of Geostationary Satellites[D].Zhengzhou:The PLA Information Engineering University,2006:1-6.
[19]文援兰,柳其许,朱俊,等.测控站布局对区域卫星导航系统的影响[J].国防科技大学学报,2007,29(1):1-6.WEN Yuanlan,LIU Qixu,ZHU Jun,et al.The Effect of TT&C Deployment on the Regional Satellite Navigation System[J].Journal of National University of Defense Technology,2007,29(1):1-6.
[20]刘伟平,郝金明,田英国,等.北斗卫星导航系统双差动力法精密定轨及其精度分析[J].测绘学报,2016,45(2):131-139.DOI:10.11947/j.AGCS.2016.20150190.LIU Weiping,HAO Jinming,TIAN Yingguo,et al.Solution Method and Precision Analysis of Double-difference Dynamic Precise Orbit Determination of BeiDou Navigation Satellite System[J].Acta Geodaetica et Cartographica Sinica,2016,45(2):131-139.DOI:10.11947/j.AGCS.2016.20150190.
[21]DACH R,LUTZ S,WALSER P,et al.Bernese GNSS Software Version 5.2[M].Bern:University of Bern,2015.
[22]刘经南,邓辰龙,唐卫明.GNSS整周模糊度确认理论方法研究进展[J].武汉大学学报(信息科学版),2014,39(9):1009-1016.LIU Jingnan,DENG Chenlong,TANG Weiming.Review of GNSS Ambiguity Validation Theory[J].Geomatics and Information Science of Wuhan University,2014,39(9):1009-1016.
[23]HE Lina,GE Maorong,WANG Jiexian,et al.Experimental Study on the Precise Orbit Determination of the BeiDou Navigation Satellite System[J].Sensors,2013,13(3):2911-2928.
[24]GE Maorong,ZHANG Hongping,JIA Xiaolin,et al.What is Achievable with the Current Compass Constellation?[J].GPS World,2012,23(1):29-34.
[25]LIU Yang,LOU Yidong,SHI Chuang,et al.BeiDou Regional Navigation System Network Solution and Precision Analysis[M]∥SUN Jiadong,JIAO Wenhai,WU Haitao,et al.China Satellite Navigation Conference(CSNC)2013 Proceedings.Berlin Heidelberg:Springer,2013:173-186.
[2]刘伟平,郝金明,魏伟,等.两种北斗卫星精密定轨方法的对比[J].大地测量与地球动力学,2016,36(3):211-215.LIU Weiping,HAO Jinming,WEI Wei,et al.Comparison of Two Methods of Precise Orbit Determination of BeiDou Satellites[J].Journal of Geodesy and Geodynamics,2016,36(3):211-215.
[3]STEIGENBERGER P,HUGENTOBLER U,HAUSCHILD A,et al.Orbit and Clock Analysis of Compass GEO and IGSO Satellites[J].Journal of Geodesy,2013,87(6):515-525.
[4]GE Maorong,ZHANG Hongping,JIA Xiaolin,et al.What is Achievable with the Current Compass Constellation[J].GPS World,2012,23(1):29-34.
[5]ZH OU Shanshi,HU Xiaogong,W U Bin,et al.Orbit Determination and Time Synchronization for a GEO/IGSO Satellite Navigation Constellation with Regional Tracking Network[J].Science China Physics,Mechanics and Astronomy,2011,54(6):1089-1097.
[6]ZHU Jun,WANG Jiasong,ZENG Guang,et al.Precise Orbit Determination of BeiDou Regional Navigation Satellite System Via Double-difference Observations[M]∥SUN Jiadong,JIAO Wenhai,WU Haitao,et al.China Satellite Navigation Conference(CSNC)2013 Proceedings.Berlin Heidelberg:Springer,2013:77-88.
[7]ZHAO Qile,GUO Jing,LI Min,et al.Initial Results of Precise Orbit and Clock Determination for COMPASS Navigation Satellite System[J].Journal of Geodesy,2013,87(5):475-486.
[8]施闯,赵齐乐,李敏,等.北斗卫星导航系统的精密定轨与定位研究[J].中国科学:地球科学,2012,42(6):854-861.SHI Chuang,ZHAO Qile,LI Min,et al.Precise Orbit Determination of BeiDou Satellites with Precise Positioning[J].Science China Earth Sciences,2012,55(7):1079-1086.
[9]MAO Yue,DU Yu,SONG Xiaoyong,et al.GEO and IGSO Joint Precise Orbit Determination[J].Science China Physics,Mechanics and Astronomy,2011,54(6):1009-1013.
[10]LI Min,ZHAO Qile,SHI Chuang,et al.Precise Orbit Determination of BeiDou Satellites Based on BeiDou/GPS Data[C]∥第三届中国卫星导航学术年会电子文集——S03精密定轨与精密定位.北京:第三届中国卫星导航学术年会,2012:1-10.
[11]李敏.多模GNSS融合精密定轨理论及其应用研究[D].武汉:武汉大学,2011:30-58.LI Min.Research on Multi-GNSS Precise Orbit Determination Theory and Application[D].Wuhan:Wuhan University,2011:30-58.
[12]MONTENBRUCK O,HAUSCHILD A,STEIGENBERGER P,et al.Initial Assessment of the COMPASS/BeiDou-2Regional Navigation Satellite System[J].GPS Solutions,2013,17(2):211-222.
[13]刘伟平,郝金明,李建文,等.多GNSS融合的北斗卫星精密定轨[J].测绘学报,2014,43(11):1132-1138,1143.DOI:10.13485/j.cnki.11-2089.2014.0186.LIU Weiping,HAO Jinming,LI Jianwen,et al.MultiGNSS Joint Precise Orbit Determination of BeiDou Navigation Satellite System[J].Acta Geodaetica et Cartographica Sinica,2014,43(11):1132-1138,1143.DOI:10.13485/j.cnki.11-2089.2014.0186.
[14]STEIGENBERGER P,HUGENTOBLER U,HAUSCHILD A,et al.Orbit and Clock Analysis of Compass GEO and IGSO Satellites[J].Journal of Geodesy,2013,87(6):515-525.
[15]MERBART L.Am biguity Resolution Techniques in Geodetic and Geodynamic Applications of the Global Positioning System[D].Berne:University of Berne,1995.
[16]GE Maorong,GENDT G,DICK G,et al.Im proving Carrier-phase Ambiguity Resolution in Global GPS Network Solutions[J].Journal of Geodesy,2005,79(1/3):103-110.
[17]GE Maorong,GENDT G,ROTHACHER M,et al.Resolution of GPS Carrier-phase Ambiguities in Precise Point Positioning(PPP)with Daily Observations[J].Journal of Geodesy,2008,82(7):389-399.
[18]杜兰.GEO卫星精密定轨技术研究[D].郑州:解放军信息工程大学,2006:1-6.DU Lan.A Study on the Precise Orbit Determination of Geostationary Satellites[D].Zhengzhou:The PLA Information Engineering University,2006:1-6.
[19]文援兰,柳其许,朱俊,等.测控站布局对区域卫星导航系统的影响[J].国防科技大学学报,2007,29(1):1-6.WEN Yuanlan,LIU Qixu,ZHU Jun,et al.The Effect of TT&C Deployment on the Regional Satellite Navigation System[J].Journal of National University of Defense Technology,2007,29(1):1-6.
[20]刘伟平,郝金明,田英国,等.北斗卫星导航系统双差动力法精密定轨及其精度分析[J].测绘学报,2016,45(2):131-139.DOI:10.11947/j.AGCS.2016.20150190.LIU Weiping,HAO Jinming,TIAN Yingguo,et al.Solution Method and Precision Analysis of Double-difference Dynamic Precise Orbit Determination of BeiDou Navigation Satellite System[J].Acta Geodaetica et Cartographica Sinica,2016,45(2):131-139.DOI:10.11947/j.AGCS.2016.20150190.
[21]DACH R,LUTZ S,WALSER P,et al.Bernese GNSS Software Version 5.2[M].Bern:University of Bern,2015.
[22]刘经南,邓辰龙,唐卫明.GNSS整周模糊度确认理论方法研究进展[J].武汉大学学报(信息科学版),2014,39(9):1009-1016.LIU Jingnan,DENG Chenlong,TANG Weiming.Review of GNSS Ambiguity Validation Theory[J].Geomatics and Information Science of Wuhan University,2014,39(9):1009-1016.
[23]HE Lina,GE Maorong,WANG Jiexian,et al.Experimental Study on the Precise Orbit Determination of the BeiDou Navigation Satellite System[J].Sensors,2013,13(3):2911-2928.
[24]GE Maorong,ZHANG Hongping,JIA Xiaolin,et al.What is Achievable with the Current Compass Constellation?[J].GPS World,2012,23(1):29-34.
[25]LIU Yang,LOU Yidong,SHI Chuang,et al.BeiDou Regional Navigation System Network Solution and Precision Analysis[M]∥SUN Jiadong,JIAO Wenhai,WU Haitao,et al.China Satellite Navigation Conference(CSNC)2013 Proceedings.Berlin Heidelberg:Springer,2013:173-186.