通信与信息技术Issue(1)：7-12,6.
GNSS/SINS紧耦合选星算法研究
Study on GNSS/SINS tightly coupled star selection algorithm
朱奎宝 1康浩楠 1郭广源 1温紫晴 1张峰 1邓承宾1
作者信息
- 1. 河北科技大学电气工程学院,河北石家庄 050018
- 折叠
摘要
Abstract
By analyzing the existing problems of the minimum GDOP method in the tightly coupled navigation system of Global Navigation Satellite System(GNSS)and Strap-down Inertial Navigation System(SINS),this paper proposes an improved GNSS/SINS tightly coupled star selection algorithm.The main steps of the algorithm include:firstly,the visible satellites are detected by pseudo-range outliers and the outlier satellites are eliminated;then,according to the distribution characteristics of the satellites,the largest one is selected as the zenith star by using the satellite altitude angle information,and finally,the remaining visible satellites are randomly combined to select three satellites and the zenith star to form four satellites,so as to get the final star selection scheme.After simulation comparison with the minimum GDOP method,the calculation of this algorithm is significantly reduced,and under the premise of guar-anteeing the positioning accuracy,it reduces the number of satellites calculated,reduces the amount of arithmetic,and has a better ef-fect of star selection.关键词
紧耦合导航系统/选星算法/精度因子/卫星几何分布/伪距Key words
Tightly coupled navigation system/Star selection algorithm/Precision factor/Satellite geometric distribution/Pseudo-distance分类
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朱奎宝,康浩楠,郭广源,温紫晴,张峰,邓承宾..GNSS/SINS紧耦合选星算法研究[J].通信与信息技术,2024,(1):7-12,6.
