| 精密单点定位估计GPS卫星的P1-C1码偏差及稳定性分析 |
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| 引用本文： | 唐龙,张小红,吕翠仙,高攀.精密单点定位估计GPS卫星的P1-C1码偏差及稳定性分析[J].全球定位系统,2011,36(2):1-5. |
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| 作者姓名： | 唐龙 张小红 吕翠仙 高攀 |
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| 作者单位： | 武汉大学测绘学院,湖北,武汉,430079 |
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| 基金项目： | 国家自然科学基金项目(40874017和41074024) |
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| 摘 要： | 给出了利用精密单点定位（PPP）技术估计GPS卫星P1-C1码偏差的数学模型，并以BRUS、GODE、SHAO和NIST四个跟踪站2010年10月份一个月的观测数据为例，采用PPP方法计算了所有GPS卫星的P1-C1码偏差，并与欧洲定轨中心提供的P1-C1码偏差进行了比较，结果表明：四个站估计的P1-C1码偏差精度均可达到几个厘米。一个月的计算结果表明：卫星的P1-C1码偏差在一个月内变化平缓。
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| 关 键 词： | PPP GPS卫星 P1-C1码偏差 稳定性 |
Estimate of GPS P1-C1 DCB with PPP and the Analysis of its Stability |
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| TANG Long,ZHANG Xiao-hong,LV Cui-xian,GAO Pan.Estimate of GPS P1-C1 DCB with PPP and the Analysis of its Stability[J].Gnss World of China,2011,36(2):1-5. |
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| Authors: | TANG Long ZHANG Xiao-hong LV Cui-xian GAO Pan |
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| Institution: | TANG Long,ZHANG Xiao-hong,LV Cui-xian,GAO Pan(School of Geodesy and Geomatics,Wuhan University,Wuhan Hubei 430079,China) |
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| Abstract: | Mathematical model of GPS P1-C1 DCB(Differential Code Bias) values estimated with PPP technology is introduced in this paper.Taking four tracking stations of BRUS,GODE,SHAO and NIST for example,with the observation data of October,2010,P1-C1 DCB of all GPS satellites are calculated.Compared to P1-C1 DCB products provided by CODE,results show that accuracy of estimated P1-C1 DCB is around several cm.In addition,according to the results,P1-C1 DCB changes slowly within a month. |
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| Keywords: | PPP GPS satellites P1-C1 DCB stability |
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