The Impact Analysis of P1C1 Code Bias on Convergence of PPP
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摘要: 本文分析卫星端差分码偏差(DCB)产生的原理,根据伪距观测方程推导了精密单点定位(PPP)的DCB改正公式。采用MGEX参考站数据及精密产品进行PPP解算,详细分析了P1C1码偏差对定位参数收敛时间的影响。结果表明,改正DCB对于提高PPP收敛速度效果明显,其中静态PPP收敛时间平均缩短10 min,动态PPP平均缩短20 min,改正P1C1-DCB对PPP精度影响一般在毫米级水平。Abstract: This paper analyzed the satellite differential code bias (DCB) generated principle. Deduced the DCB correction formula of PPP. With multiGNSS experiment data and precise clock/orbit/dcb products, this paper undertakes a thorough evaluation of DCB’s influence on convergence of PPP. The results show the convergence time obviously reduced when corrected P1C1 DCB, in which the static PPP convergence time is reduced by an average of 10 minutes, dynamic PPP average reduced by an average of 20 minutes, correct P1C1 DCB on PPP accuracy is generally in millimeter level.
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Key words:
- PPP /
- covergence time /
- DCB
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[1] ICD G. Global Positioning Systems Directorate System Engineering & Integration Interface Specification ISGPS200G, in Navstar GPS space segment/navigation user interface[R]. Washington, DC, USA, 2013. [2] MONTENBRUCK O, HAUSCHILD A, STEIGENBERGER P. Differential code bias estimation using multiGNSS observations and Global Ionosphere Maps[J]. Navigation, 2014, 61(3): 191-201. [3] Montenbruck O, Hauschild A. Code biases in multiGNSS point positioning[C]//Proceedings of the 2013 International Technical Meeting of the Institude of Navigation, San Diego, California. 2013. [4] 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. [5] GUO F, ZHANG X, WANG J. Timing group delay and differential code bias corrections for BeiDou positioning[J]. Journal of Geodesy, 2015, 89(5):427-445. [6] 王宁波,袁运斌,张宝成,等.GPS民用广播星历中ISC参数精度分析及其对导航定位的影响[J].测绘学报,2016,45(8):919-928. [7] 章红平,施闯,唐卫明,等.地基GPS区域电离层多项式模型与硬件延迟统一解算分析[J]. 武汉大学学报(信息科学版),2008,33(8):805-809. [8] RAY J. C1P1 biases for Leica and Trimble 5700 receivers[EB/OL]. http://igscb.jpl.nasa.gov/mial/igsmail, Masachusetts,2002 [9] 张小红,左翔,李盼,等. BDS/GPS精密单点定位收敛时间与定位精度的比较[J]. 测绘学报,2015,44(3):250-256. [10] 张小红. 动态精度单点定位 (PPP) 的精度分析[J]. 全球定位系统, 2006, 31(1): 7-11. [11] 王峥,周剑.基于Kalman滤波的大规模GNSS网参数估计方法[J]. 测绘通报,2017(1):18-21. [12] 赵磊,张守建. GPS卫星P1C1码间偏差对动态PPP影响分析[J]. 大地测量与地球动力学, 2016, 36(2):143-145. [13] 曾添,隋立芬, 鲍亚东,等. BDS卫星端差分码偏差对定位的影响及改正模型研究[J]. 大地测量与地球动力学, 2017, 37(1):53-57.
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