Swarm卫星天线相位中心校正及其对精密定轨的影响

doi:10.11947/j.AGCS.2016.20160132

测绘学报 ›› 2016, Vol. 45 ›› Issue (12): 1406-1412.doi: 10.11947/j.AGCS.2016.20160132

Swarm卫星天线相位中心校正及其对精密定轨的影响

田英国^1,2, 郝金明^1,2

1. 信息工程大学导航与空天目标工程学院, 河南郑州 450001;
2. 北斗导航应用技术河南省协同创新中心, 河南郑州 450001

收稿日期:2016-03-29 修回日期:2016-09-29 出版日期:2016-12-20 发布日期:2017-01-02
作者简介:田英国(1987-),男,博士生,研究方向为低轨卫星精密定轨。E-mail:tianyg1987@sina.com

Swarm Satellite Antenna Phase Center Correction and Its Influence on the Precision Orbit Determination

TIAN Yingguo^1,2, HAO Jinming^1,2

1. Institution of Navigation and Aerospace Engineering, Information Engineering University, Zhengzhou 450001, China;
2. BeiDou Navigation Technology Collaborative Innovation Center of Henan, Zhengzhou 450001, China

Received:2016-03-29 Revised:2016-09-29 Online:2016-12-20 Published:2017-01-02

摘要/Abstract

摘要： 接收机天线相位中心偏差是星载GPS精密定轨必须考虑的误差源，而PCV一般需要多天观测数据进行联合估计，其估计方法及效率显得尤为重要。本文针对传统PCV综合方法计算效率较低、需要存储多天的法方程以及先验信息等问题，提出了一种改进的PCV综合方法。该方法通过递推的方式，既不需要存储多天的法方程及先验信息，又能够及时提供PCV信息，进而提高了PCV值获取的效率，为实现Swarm卫星PCV的快速求解提供了一种新的途径。最后，利用星载GPS数据进行了Swarm卫星精密定轨。试验结果表明：采用改进的PCV综合方法，能够提高PCV综合效率，降低所需存储空间；通过与外部精密轨道比较表明，进行PCV改正后，Swarm卫星的径向、切向和法向定轨精度均有不同程度的提高，尤其是对法向精度改善最为明显，平均提高约23.3 mm；进行PCV改正后，Swarm卫星各个方向的定轨精度均优于2 cm。

关键词: 星载GPS, Swarm卫星, 精密定轨, 天线相位中心变化, 精度分析

Abstract: Receiver antenna phase center bias is a source of error must be considered in precise orbit determination using GPS. And PCV generally need multi-day observations data for joint estimation, so the estimation methods and its efficiency are particularly important. For the traditional PCV estimation method imperfect, such as the low computational efficiency, need to store days of normal equations and a priori information, this paper proposes an improved PCV synthesis method. By recursive way, the method doesn't need to store multi-day normal equations and the priori information about orbit, provide timely information PCV, then improve the efficiency of obtaining the PCV value, and provides a new way to achieve the Swarm satellite PCV solution. By the Swarm satellite precise orbit determination (POD), the result shows that the rapid PCV synthesis method can improve the efficiency of PCV synthesis, reducing the need for storage space. By comparing with external precision orbit, the result show that after the PCV correction, radial, tangential and normal precision of Swarm satellite orbit is improved, especially the normal precision most obviously, the average of about 23.3 mm; after the PCV correction, Swarm satellite orbit precision of all directions was superior to 2 cm.

Key words: spaceborne GPS, Swarm satellite, precise orbit determination, antennas phase center variation, precision analysis

中图分类号:

P228

田英国, 郝金明. Swarm卫星天线相位中心校正及其对精密定轨的影响[J]. 测绘学报, 2016, 45(12): 1406-1412.

TIAN Yingguo, HAO Jinming. Swarm Satellite Antenna Phase Center Correction and Its Influence on the Precision Orbit Determination[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(12): 1406-1412.

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Swarm卫星天线相位中心校正及其对精密定轨的影响

Swarm Satellite Antenna Phase Center Correction and Its Influence on the Precision Orbit Determination

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