GPS/GALILEO偏航姿态异常对动态PPP的影响及其改正模型

doi:10.11947/j.AGCS.2018.20170695

测绘学报 ›› 2018, Vol. 47 ›› Issue (12): 1599-1608.doi: 10.11947/j.AGCS.2018.20170695

GPS/GALILEO偏航姿态异常对动态PPP的影响及其改正模型

刘天骏¹, 王坚², 曹新运³, 匡开发³, 范曹明⁴

1. 中国矿业大学国土环境与灾害监测国家测绘地理信息局重点实验室, 江苏徐州 221116;
2. 北京建筑大学测绘与城市空间信息学院, 北京 100044;
3. 武汉大学测绘学院, 湖北武汉 430079;
4. 山东科技大学测绘科学与工程学院, 山东青岛 266590

收稿日期:2017-12-13 修回日期:2018-09-06 出版日期:2018-12-20 发布日期:2018-12-24
通讯作者: 王坚 E-mail:wjiancumt@163.com
作者简介:刘天骏(1994-),男,硕士生,研究方向为GNSS精密定位。E-mail:tjliu_cumt@126.com
基金资助:
国家重点研发计划（2016YFC0803103）

The Impact of Yaw Attitude of Eclipsing GPS/GALILEO Satellites on Kinematic PPP Solutions and Their Correction Models

LIU Tianjun¹, WANG Jian², CAO Xinyun³, KUANG Kaifa³, FAN Caoming⁴

1. NASG Key Laboratory of Land Environment and Disaster Monitoring, China University of Mining and Technology, Xuzhou 221116, China;
2. School of Geomatics and Urban Spatial Information, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
3. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
4. College of Geomatics, Shandong University of Science and Technology, Qingdao 266590, China

Received:2017-12-13 Revised:2018-09-06 Online:2018-12-20 Published:2018-12-24
Supported by:
The National Key Research and Development Program of China (No. 2016YFC0803103)

摘要/Abstract

摘要：

当GPS、GALILEO卫星运行至与太阳、地球近似共线时，卫星很难维持名义姿态，将出现一段时间的偏航姿态异常。本文基于不同分析中心所提供的精密轨道和钟差产品，在卫星偏航姿态异常时期，设计不同姿态改正策略，选取全球分布的7个MGEX站10 d实测数据，分析了GPS、GALILEO卫星的天线相位中心改正、相位缠绕改正对观测值残差及动态PPP定位结果的影响。研究表明，在卫星偏航姿态异常时期，采用名义偏航姿态对GPS、GALILEO卫星观测值残差的影响可分别达到8和11 cm，在此期间，GPS/GALILEO卫星采用模型偏航姿态，与采用名义偏航姿态相比，动态PPP的E、N、U 3个方向的定位精度可分别提高13.30%、15.77%和12.98%，相较于剔除卫星策略，采用模型偏航姿态的动态PPP定位精度在E、N、U方向可分别提高5.399%、4.430%、5.992%。

关键词: 偏航姿态, 相位缠绕, 天线相位中心偏差, 动态PPP

Abstract:

When GPS/GALILEO satellite runs to the position where it is approximately collinear with the sun and the earth, it is difficult for the satellite to keep nominal attitude, so it will show abnormal yaw attitude for a period of time. Based on the precision orbit and clock correction products offered by different analysis centers, we design different attitude correction strategies for satellite that is in abnormal yaw attitude period, select 10-day measured data from 7 MGEX stations distributed globally, and analyze the influence of antenna phase center offset and phase wind-up of GPS/GALILEO satellite on residuals of observations and kinematic PPP positioning result in this paper. The research results show that when the satellite is in abnormal yaw attitude period, adopting nominal yaw attitude can have an impact up to 8 cm and 11 cm on the residuals of GPS/GALILEO satellite observations. GPS/GALILEO satellite is in model yaw attitude during the period and its positioning accuracy of kinematic PPP positioning results in three directions of E, N and U shows an increasing rate of 13.30%, 15.77% and 12.98%, respectively in comparison with that in nominal yaw attitude. Comparing with satellite deletion strategy, the accuracy of kinematic PPP positioning results in three directions of E, N and U when the satellite is in model yaw attitude shows an increasing rate of 5.399%, 4.430% and 5.992%, respectively.

Key words: yaw attitude, phase wind-up, antenna phase center offset, kinematic PPP

中图分类号:

P228

刘天骏, 王坚, 曹新运, 匡开发, 范曹明. GPS/GALILEO偏航姿态异常对动态PPP的影响及其改正模型[J]. 测绘学报, 2018, 47(12): 1599-1608.

LIU Tianjun, WANG Jian, CAO Xinyun, KUANG Kaifa, FAN Caoming. The Impact of Yaw Attitude of Eclipsing GPS/GALILEO Satellites on Kinematic PPP Solutions and Their Correction Models[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(12): 1599-1608.

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GPS/GALILEO偏航姿态异常对动态PPP的影响及其改正模型

The Impact of Yaw Attitude of Eclipsing GPS/GALILEO Satellites on Kinematic PPP Solutions and Their Correction Models

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