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基于惯导误差特性的地磁匹配正交搜索方法

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基于惯导误差特性的地磁匹配正交搜索方法
Orthogonal Search Method for Geomagnetic Matching Based on Inertial Navigation Error Characteristics
投稿时间:2020-03-24
DOI:10.15918/j.tbit1001-0645.2020.045
中文关键词:地磁匹配惯导误差正交搜索
English Keywords:geomagnetic matchinginertial navigation errororthogonal search
基金项目:国家部委"十三五"预研资助项目(41417030103)
作者单位
韩勇强北京理工大学 自动化学院, 北京 100081
张延顺北京航空航天大学 仪器科学与光电工程学院, 北京 100191
陈家斌北京理工大学 自动化学院, 北京 100081
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中文摘要:
针对地磁匹配导航对实时性的需求,提出了基于惯性误差特性的正交搜索方法.该方法在对惯导误差特性分析基础上,采用正交搜索策略,将插值后匹配点地磁数据序列沿与飞行轨迹垂直方向和平行方向分别进行正交搜索,快速得到最佳匹配结果.将地面测量地磁数据延拓到不同高度,分别应用本文方法和全局搜索算法进行处理.数据处理结果表明本文方法与全局搜索算法具有同等的匹配精度,但减少了搜索时间,能有效提高高空高速飞行器匹配定位方法的实时性.
English Summary:
Aiming at the real-time requirement of geomagnetic matching navigation,an orthogonal search method based on inertial error characteristics was proposed.Based on the analysis of inertial navigation error characteristics,this method was arranged to adopt an orthogonal search strategy to perform orthogonal search on the geomagnetic data sequence of the matching point after interpolation along the vertical direction and the parallel direction of the flight trajectory respectively,to quickly obtain the best matching result.Extending the geomagnetic data of the ground measurement to different heights,the proposed method and the global search algorithm were used to process geomagnetic data.The data processing results show that the method in this paper has the same matching accuracy as the global search algorithm,but it can reduce the search time and can effectively improve the real-time performance of the matching and positioning method of high-speed high-altitude aircraft.
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