不同卫星天线参数对BDS定轨定位精度的影响

doi:10.11947/j.AGCS.2019.20180226

测绘学报 ›› 2019, Vol. 48 ›› Issue (7): 908-918.doi: 10.11947/j.AGCS.2019.20180226

不同卫星天线参数对BDS定轨定位精度的影响

胡一帆¹, 张帅²

1. 北京合众思状科技股份有限公司, 北京 100176;
2. 上海市政工程设计研究总院(集团)有限公司, 上海 200082

收稿日期:2018-06-10 修回日期:2019-03-23 出版日期:2019-07-20 发布日期:2019-07-26
作者简介:胡一帆(1991-),男,硕士,工程师,研究方向为GNSS精密定轨定位。
基金资助:
十三五国家重点研发计划"智能农机装备"重点专项（2017YFD0700401）

The impacts of different satellite antenna parameters on BDS precise orbit determination and precise point positioning accuracy

HU Yifan¹, ZHANG Shuai²

1. Beijing UniStrong Science and Technology Co., Ltd, Beijing 100176, China;
2. Shanghai Municipal Engineering Design Institute(GROUP) CO., Ltd, Shanghai 200082, China

Received:2018-06-10 Revised:2019-03-23 Online:2019-07-20 Published:2019-07-26
Supported by:
The National High-Tech Research and Development "Plan Research of Agricultural Machinery Positioning and Navigation Technology Device" (No. 2017YFD0700401)

摘要/Abstract

摘要： 论证了BDS精密单点定位时卫星天线参数与卫星轨道、钟差产品保持一致的必要性。基于4组不同卫星天线参数BDS精密定轨RTN 3方向内符合精度，GEO卫星均在9.3、18.6、11.5 cm左右，IGSO卫星均在1.7、4.2、2.7 cm左右，MEO卫星均在2.1、5.1、4.8 cm左右，在R方向的差异小于5 mm，在TN方向的差异最大为2.4 cm；定轨结果与GFZ的事后精密产品比较，RTN 3方向外符合精度差异较明显，排除GEO卫星因定轨策略与GFZ差异较大的因素，IGSO和MEO外符合精度ESA和WHU相近，RTN 3方向均在10 cm以内，各分量上优于IGS和EST 1~10 cm，其中TN方向差异最显著。在保持BDS PPP使用的卫星天线参数与卫星轨道、钟差产品一致的前提下，4组卫星天线参数定位精度相近，其中静态定位最后一个历元水平和高程方向坐标偏差均在5 cm以内，动态定位收敛后坐标偏差RMS水平方向在10 cm以内、高程方向在15 cm以内；使用ESA和WHU天线参数动态定位平均收敛时间在46 min左右，IGS和EST天线参数动态定位平均收敛时间在56 min左右，略差于基于GFZ事后产品的收敛时间，其平均收敛时间在34 min左右。

关键词: 卫星天线参数, BDS卫星精密定轨, BDS精密单点定位, 轨道精度, 定位精度, 收敛时间

Abstract: The necessity that the satellite antenna parameters used in BDS PPP should be consistent with the satellite orbit and clock products is demonstrated. Based on four groups of satellite antenna parameters BDS precise orbit inner accuracy in RTN three-way, GEO satellites are all around 9.3、18.6、11.5 cm, IGSO satellites are around 1.7、4.2、2.7 cm, MEO satellites are about 2.1、5.1、4.8 cm, the difference of the orbit determination accuracy in the R direction is less than 5 mm, and the maximum difference in the TN direction is 2.4 cm. Compared with the GFZ's post precision products, the outer accuracy of RTN is significantly different, excluding the factors of the difference orbit determination strategy with GFZ in GEO, the IGSO and MEO orbit precision are similar between ESA and WHU, and the RTN is within 10 cm in all directions, which are better than IGS and EST from 1 cm to 10 cm in three components, where TN direction have the most significant difference. While keeping the satellite antenna parameters used by BDS PPP consistent with the satellite orbit and clock products, the positioning accuracy of the four satellite antenna parameters are similar, in which the last epoch coordinate bias of static PPP is within 5 cm, the RMS of kinematic PPP coordinate bias is within 10 cm in horizontal direction after convergence, and within 15 cm in vertical direction. The average convergence time of kinematic PPP based on ESA and WHU antenna parameters was about 46 min, while the average convergence time based on IGS and EST antenna parameters was about 56 min, slightly worse than the convergence time based on GFZ post-products, and its average convergence time was about 34 min.

Key words: satellite antenna parameters, BDS precise orbit determination, BDS precise point positioning, orbit accuracy, positioning accuracy, convergence time

中图分类号:

P228

胡一帆, 张帅. 不同卫星天线参数对BDS定轨定位精度的影响[J]. 测绘学报, 2019, 48(7): 908-918.

HU Yifan, ZHANG Shuai. The impacts of different satellite antenna parameters on BDS precise orbit determination and precise point positioning accuracy[J]. Acta Geodaetica et Cartographica Sinica, 2019, 48(7): 908-918.

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不同卫星天线参数对BDS定轨定位精度的影响

The impacts of different satellite antenna parameters on BDS precise orbit determination and precise point positioning accuracy

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