GNSS antenna phase center variation calibration for attitude determination on short baselines

被引：3
|
作者：
Willi, Daniel [1 ]
Meindl, Michael [1 ]
Xu, Hui [1 ]
Rothacher, Markus [1 ]
机构：
[1] Swiss Fed Inst Technol, Inst Geodesy & Photogrammetry, Zurich, Switzerland
来源：
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION | 2018年 / 65卷 / 04期
关键词：
Satellite antennas - Budget control - Global positioning system - Mean square error;
D O I：
10.1002/navi.273
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
CubETH is a satellite project aimed at technology demonstration. One of the mission goals is the determination of the attitude of the 10 x 10 x 10 cm(3) spacecraft with GNSS. First tests revealed that Phase Center Variations (PCV) dominate the error budget. In consequence, a simple field method for PCV calibration of antenna systems was developed. The estimated PCV confirms the hypothesis of mutual influence of the antennas. A simulation study using the estimated pattern and a validation with real data proved that the PCV calibrations significantly enhance the accuracy of the attitude determination. The root mean square error of the estimated attitude of a platform with three antennas located within 15 cm of each other could be reduced from 6 degrees to 4.5 degrees. The newly developed calibration method is easy to carry out and will help to enhance the accuracy of GNSS attitude determination systems.
引用
收藏
页码：643 / 654
页数：12
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