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- 2018
GPS卫星钟差改正数实时预报算法
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Abstract:
实时卫星钟差（satellite clock bias，SCB）的获取是实时精密单点定位（real-time precise point positioning，RTPPP）需要解决的关键问题。给出了国际GNSS服务（International GNSS Service，IGS）所提供的实时服务（real-time service，RTS）钟差产品的修复方法，分析了IGS02、IGS03实时数据流中GPS卫星钟差改正数的稳定性及其精度。同时，从原理上推导证明了钟差一次差分数据符合一次多项式模型，并结合对GPS卫星钟差改正数的分析提出了一种基于一次差分的钟差改正数预报算法，通过与一次多项式模型、二次多项式模型以及灰色模型的预报精度进行对比试验，结果表明，该钟差改正数预报算法预报精度有明显提高，预报30 s的精度达到0.06 ns，可满足实时精密单点定位的要求
| [1] | Han S C, Kwon J H, Jekeli C. Accurate Absolute GPS Positioning Through Satellite Clock Error Estimation[J].<em>Journal of Geodesy</em>, 2001, 75(1):33-43 |
| [2] | Li Li, Kuang Cuilin, Zhu Jianjun, et al. Real-time Estimation of Precise Satellites Clock Bias Based on IGU Predicted Orbit[J]. <em>Journal of Geodesy and Geodynamics</em>, 2011, 31(2):111-116(李黎,匡翠林,朱建军,等. 基于IGU预报轨道实时估计精密卫星钟差[J]. 大地测量与地球动力学, 2011, 31(2):111-116) |
| [3] | Yin Qianqian, Lou Yidong, Yi Wenting. Comparison and Analysis of IGS Real-time Products[J]. <em>Journal of Geodesy and Geodynamics</em>, 2012, 32(6):123-128(尹倩倩,楼益栋,易文婷. IGS实时产品比较与分析[J]. 大地测量与地球动力学, 2012, 32(6):123-128) |
| [4] | Tomasz H, Jaroslaw B. IGS RTS Precise Orbits and Clocks Verification and Quality Degradation[J]. <em>GPS Solution</em>, 2015, 19:93-105 |
| [5] | Lou Yidong, Shi Chuang, Zhou Xiaoqing, et al. Realization and Analysis of GPS Precise Clock Pro-ducts[J]. <em>Geomatics and Information Science of Wuhan University</em>, 2009,34(1):88-91(楼益栋,施闯,周小青,等.GPS精密卫星钟差估计与分析[J].武汉大学学报·信息科学版,2009,34(1):88-91) |
| [6] | Davis J, Bhattarai S, Ziebart M. Development of a Kalman Filter Based GPS Satellite Clock Time-Offset Prediction Algorithm[C]. European Frequency and Time Forum (EFTF), Gothenburg, Sweden,2012 |
| [7] | Cui Xianqiang, Jiao Wenhai. Grey System Model for the Satellite Clock Error Predicting[J]. <em>Geomatics and Information Science of Wuhan University</em>, 2005,30(5):447-450(崔先强,焦文海.灰色系统模型在卫星钟差预报中的应用[J].武汉大学学报·信息科学版,2005,30(5):447-450) |
| [8] | Gao Chengfa, Shen Xuefeng, Wang Denghui, et al. Precise Clock Error Estimation of GPS Satellite Based on Regional Reference Network[J]. <em>Journal of Navigation and Positioning</em>, 2013,1(1):40-46(高成发,沈雪峰,汪登辉,等.基于区域CORS的实时精密卫星钟差估计研究[J].导航定位学报, 2013, 1(1):40-46) |
| [9] | Heo Y J, Cho J, Heo M B. Improving Prediction Accuracy of GPS Satellite Clocks with Periodic Va-riation Behavior[J].<em>Measurement Science and Technology</em>, 2010, 21(7):3001-3008 |
| [10] | Zhang X, Li X, Guo F. Satellite Clock Estimation at 1 Hz for Realtime Kinematic PPP Applications[J]. <em>GPS Solution</em>, 2011, 15(4):315-324 |
| [11] | Wang Shengli,Wang Qing, Gao Wang,et al. Quality Analysis of IGS Real-time Products and Its Application in Real-time Precise Point Positioning[J]. <em>Journal of Southeast University(Natural Science Edition)</em>, 2013,43(Ⅱ):365-369(王胜利,王庆,高旺,等. IGS实时产品质量分析及其在实时精密单点定位中的应用[J].东南大学学报(自然科学版),2013,43(Ⅱ):365-369) |
| [12] | Xia Yan, Gao Chengfa, Pan Shuguo, et al. Determination of Real-time Precise Satellite Clock Offset Based on Multiple Reference Station Using Regional CORS[J]. <em>Journal of Southeast University (Natural Science Edition)</em>,2013,43(Ⅱ):434-439(夏炎,高成发,潘树国,等.基于区域CORS多基站联合解算的精密卫星钟差实时估计[J].东南大学学报(自然科学版),2013,43(Ⅱ):434-439) |
| [13] | Ge M R, Chen J P, Dou？a J, et al. A Computatio-nally Efficient Approach for Estimating High-rate Satellite Clock Corrections in Real Time[J]. <em>GPS Solution</em>, 2012, 16(1):9-17 |
