星载BDS动态滤波弹道测定与精度评估

IF 0.5 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Open Astronomy Pub Date : 2022-01-01 DOI:10.1515/astro-2022-0193

Shuyang Zhao, Jia-Yu Chang

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引用次数: 0

摘要

摘要北斗卫星导航系统(BDS)星载接收机在跟踪导弹和运载火箭时无法提供实时定位精度。将动态滤波最优估计理论应用于高动态星载BDS弹道参数求解，提出了最优约束几何稀释精度(GDOP)星座选择策略，建立了基于动态滤波估计的星载BDS弹道确定和精度估计数学模型，并利用观测数据对星载BDS定位精度进行了分析。计算结果表明，动态滤波定位算法简单、实用、可靠，能有效抑制和减少弹道参数随机误差，显著提高定位精度，充分满足高动态、高精度导航定位用户的需求，具有良好的应用前景。

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On-board BDS dynamic filtering ballistic determination and precision evaluation

Abstract BeiDou navigation satellite system (BDS) receivers on-board cannot give real-time positioning precision in tracking missile and carrier rocket. In this article, the dynamic filtered optimal estimation theory is applied to the highly dynamic on-board BDS ballistic parameter solution, an optimally constrained geometric dilution precision (GDOP) constellation selection strategy is proposed, a mathematical model based on dynamic filtered estimation for the ballistic determination and precision estimation of the on-board BDS is established, and an analysis of the on-board BDS positioning precision is carried out using the observed data. The calculation results show that the dynamic filter positioning algorithm is simple, practical, and reliable, which can effectively suppress and reduce the random errors of ballistic parameters and significantly improve the positioning precision, fully satisfying the needs of high dynamic and high precision navigation and positioning users, and has good application prospects.

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来源期刊

Open Astronomy Physics and Astronomy-Astronomy and Astrophysics

CiteScore

1.30

自引率

14.30%

发文量

审稿时长

16 weeks

期刊介绍： The journal disseminates research in both observational and theoretical astronomy, astrophysics, solar physics, cosmology, galactic and extragalactic astronomy, high energy particles physics, planetary science, space science and astronomy-related astrobiology, presenting as well the surveys dedicated to astronomical history and education.