基于BDS/GPS观测的北斗硬件延迟解算
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摘要
研究了联合BDS/GPS观测数据基于球冠谐函数的中国区域电离层建模,并精确估计了北斗卫星和接收机DCB。联合解算得到的GPS卫星DCB相对CODE精度优于0.2 ns,GPS接收机DCB相对CODE精度优于1 ns;联合解算得到的中国区域上空VTEC相对CODE事后产品的精度可达2~3 TECU。
The regional ionosphere modelling is reseached to esitimate the BDS differential code bias based on the spherical cap harmonic methods in this paper. Using GPS/BDS combined obervations,the estimated GPS differential code bias and ionospheric parameters are more accurate,in which the GPS satellite differential code bias is better than 0.2 ns and GPS receiver differential code bias is better than 1 ns compared with the CODE post-processing values. Meanwhile,compared with that of the estimated ionospheric models with the CODE post-processing model,estimated VTEC over China continent reaches about 2 ~ 3 TECU.
The regional ionosphere modelling is reseached to esitimate the BDS differential code bias based on the spherical cap harmonic methods in this paper. Using GPS/BDS combined obervations,the estimated GPS differential code bias and ionospheric parameters are more accurate,in which the GPS satellite differential code bias is better than 0.2 ns and GPS receiver differential code bias is better than 1 ns compared with the CODE post-processing values. Meanwhile,compared with that of the estimated ionospheric models with the CODE post-processing model,estimated VTEC over China continent reaches about 2 ~ 3 TECU.
引文
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[8]伍吉仓,张泽峰,陈俊平.基于单站相位数据的接收机硬件延迟估算方法[J].大地测量与地球动力学,2016,36(3):235-238.WU J C,ZHANG Z F,CHEN J P.Methods for estimation of single station differential code biases by GPS phase observations[J].Journal of Geodesy and Geodynamics,2016,36(3):235-238.
[9]曾添,隋立芬,肖国锐,等.BDS卫星端DCB不同表达对单点定位精度的影响[J].测绘科学技术学报,2016,33(4):362-367.ZENG T,SUI L F,XIAO G R,et al.The influence on singlereceiver positioning accuracy of the different expressions of BDS satellite differential code bias[J].Journal of Geomatics Science and Technology,2016,33(4):362-367.
[10]吴晓莉,平劲松,刘利,等.区域卫星导航系统硬件延迟解算[J].武汉大学学报(信息科学版),2011,36(10):1218-1221.WU X L,PING J S,LIU L,et al.Hardware delay solution of regional satellite navigation system[J].Geomatics and Information Science of Wuhan University,2011,36(10):1218-1221.
[11]赵传华,秘金钟,党亚民,等.电离层内插模型的分析[J].测绘科学技术学报,2013,30(2):140-143.ZHAO C H,BEI J Z,DANG Y M,et al.Analysis on ionosphere interpolation models[J].Journal of Geomatics Science and Technology,2013,30(2):140-143.
[12]HSINES G V.Computer programs for spherical cap harmonic analysis of potential and general fields[J].Computers&Geosciences,1988,14(4):413-447.
[13]柳景斌,王泽民,王海军,等.利用球冠谐分析方法和GPS数据建立中国区域电离层TEC模型[J].武汉大学学报(信息科学版),2008,33(8):792-795.LIU J B,WANG Z M,WANG H J,et al.Modeling regional ionosphere using GPS measurements over China by spherical cap harmonic analysis methodology[J].Geomatics and Information Science of Wuhan University,2008,33(8):792-795.
[2]许才军,陈永奇,刘焱雄.确定卫星与接收机信号延迟偏差的新方法及其应用[J].测绘学报,1999,28(2):162-171.XU C J,CHEN Y Q,LIU Y X.A new algorithm of estimate instrumental biases and its application to DGPS reference staions in Hong Kong area[J].Acta Geodaetica et Cartographica Sinica,1999,28(2):162-171.
[3]袁运斌,欧吉坤.GPS观测数据中的仪器偏差对确定电离层延迟的影响及处理方法[J].测绘学报,1999,28(2):110-114.YUAN Y B,OU J K.The effects of instrumental bias in GPS observations on determining ionospheric delays and the methods of its alibration[J].Acta Geodaetica et Cartographica Sinica,1999,28(2):110-114.
[4]常青,张东和,肖佐,等.GPS系统硬件延迟修正方法[J].科学通报,2000(15):1676-1680.CHANG Q,ZHANG D H,XIAO Z,et al.A method of GPS differential code bias delay correction[J].Chinese Science Bulletin,2000(15):1676-1680.
[5]张瑞.多模GNSS实时电离层精化建模及其应用研究[D].武汉:武汉大学,2013:46-54.ZHANG R.Theory and method on multimode GNSS real-time refinement ionospheric modeling and its application[D].Wuhan:Wuhan University,2013:46-54.
[6]谢益炳,陈俊平,伍吉仓.一种确定单站接收机码间偏差的新算法[J].大地测量与地球动力学,2013,33(4):142-145.XIE Y B,CHEN J P,WU J C.A new algorithm for determining single receiver DCB[J].Journal of Geodesy and Geodynamics,2013,33(4):142-145.
[7]谢益炳,陈俊平,伍吉仓,等.不同约束条件对电离层电子含量和硬件延迟的影响[J].武汉大学学报(信息科学版),2014,39(7):799-803.XIE Y B,CHEN J P,WU J C,et al.Ionospheric electron content and hardware delay analysis based on different constraints[J].Geomatics and Information Science of Wuhan University,2014,39(7):799-803.
[8]伍吉仓,张泽峰,陈俊平.基于单站相位数据的接收机硬件延迟估算方法[J].大地测量与地球动力学,2016,36(3):235-238.WU J C,ZHANG Z F,CHEN J P.Methods for estimation of single station differential code biases by GPS phase observations[J].Journal of Geodesy and Geodynamics,2016,36(3):235-238.
[9]曾添,隋立芬,肖国锐,等.BDS卫星端DCB不同表达对单点定位精度的影响[J].测绘科学技术学报,2016,33(4):362-367.ZENG T,SUI L F,XIAO G R,et al.The influence on singlereceiver positioning accuracy of the different expressions of BDS satellite differential code bias[J].Journal of Geomatics Science and Technology,2016,33(4):362-367.
[10]吴晓莉,平劲松,刘利,等.区域卫星导航系统硬件延迟解算[J].武汉大学学报(信息科学版),2011,36(10):1218-1221.WU X L,PING J S,LIU L,et al.Hardware delay solution of regional satellite navigation system[J].Geomatics and Information Science of Wuhan University,2011,36(10):1218-1221.
[11]赵传华,秘金钟,党亚民,等.电离层内插模型的分析[J].测绘科学技术学报,2013,30(2):140-143.ZHAO C H,BEI J Z,DANG Y M,et al.Analysis on ionosphere interpolation models[J].Journal of Geomatics Science and Technology,2013,30(2):140-143.
[12]HSINES G V.Computer programs for spherical cap harmonic analysis of potential and general fields[J].Computers&Geosciences,1988,14(4):413-447.
[13]柳景斌,王泽民,王海军,等.利用球冠谐分析方法和GPS数据建立中国区域电离层TEC模型[J].武汉大学学报(信息科学版),2008,33(8):792-795.LIU J B,WANG Z M,WANG H J,et al.Modeling regional ionosphere using GPS measurements over China by spherical cap harmonic analysis methodology[J].Geomatics and Information Science of Wuhan University,2008,33(8):792-795.