| 一种改进的混合差分实时GPS卫星钟差估计算法及其实现 |
| |
| 引用本文： | 陈永昌,袁运斌,艾青松,查九平,赵传宝.一种改进的混合差分实时GPS卫星钟差估计算法及其实现[J].大地测量与地球动力学,2019,39(4):399-403. |
| |
| 作者姓名： | 陈永昌 袁运斌 艾青松 查九平 赵传宝 |
| |
| 作者单位： | 中科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室,武汉市徐东大街340号,430077;中国科学院大学,北京市玉泉路19号甲,100049;中科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室,武汉市徐东大街340号,430077 |
| |
| 基金项目： | 国家重点研发计划;国家自然科学基金;国家自然科学基金 |
| |
| 摘 要： | 提出一种改进的混合差分算法,实现实时GPS卫星钟差估计。算法实现过程主要采用4个解算步骤,最终生成播发至用户的实时钟差产品。利用全球分布的68个测站实时数据流进行GPS卫星实时钟差解算,并对2018-01-14～01-19的实时GPS卫星钟差产品采用2种方法进行检核:1)与IGS快速钟差产品比较;2)运用实时动态PPP结果检核。结果显示,基于改进的混合差分算法,利用实时数据流实现的GPS实时卫星钟差产品具备STD为0.15 ns、RMS为0.63 ns的精度,可提供实时cm级定位服务。
|
| 关 键 词： | GPS 混合差分 实时卫星钟差 算法实现 PPP |
A Modified Mixed-Differenced Method for Real-Time GPS Satellite Clock Offset Estimation and Its Realization |
| |
| CHEN Yongchang,YUAN Yunbin,AI Qingsong,ZHA Jiuping,ZHAO Chuanbao.A Modified Mixed-Differenced Method for Real-Time GPS Satellite Clock Offset Estimation and Its Realization[J].Journal of Geodesy and Geodynamics,2019,39(4):399-403. |
| |
| Authors: | CHEN Yongchang YUAN Yunbin AI Qingsong ZHA Jiuping ZHAO Chuanbao |
| |
| Institution: | (State Key Laboratory of Geodesy and Earth’s Dynamics,Institute of Geodesy and Geophysics,CAS,340 Xudong Street,Wuhan 430077,China;University of Chinese Academy of Sciences,A19 Yuquan Road,Beijing 100049,China) |
| |
| Abstract: | As the service capabilities of the GPS system has improved steadily, and with the increasing demand for real-time positioning service, real-time satellite clock products are gaining more attention by experts and scholars in relevant fields. In this paper, we implement real-time GPS satellite clock offset estimation based on a modified mixed-differenced algorithm. The realization of this method consists of four steps, which can generate final real-time satellite clock offset products for users. The real-time clock product of GPS satellites is solved using real-time stream data from 68 globally distributed stations. For the generated real-time GPS satellite clock products from Jan 14 to Jan 19, 2018, two ways are used to evaluate the products: first, comparing with the IGS rapid clock offset products; and second, applying the products in real-time kinematic PPP. We verify that the real-time clock product based on the modified mixed-differenced algorithm can reach accuracy of about STD 0.15 ns, RMS 0.63 ns. It can provide real-time centimeter-level positioning service. |
| |
| Keywords: | GPS mixed-differenced real-time clock offset algorithm implementation PPP |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《大地测量与地球动力学》浏览原始摘要信息 |
| 点击此处可从《大地测量与地球动力学》下载免费的PDF全文 |
|
