摘要: |
重力辅助导航是以惯性导航为基础的辅助导航方法, 惯性导航系统(INS) 的误差特性
直接影响匹配算法的定位效果。通过对几种经典的重力场相关匹配及滤波匹配算法的研究及匹
配仿真实验指出, INS 定位精度的变化会改变不同匹配算法间的优劣关系, 从而改变匹配算法的
适用性, 并得出了适用于不同定位精度INS 的匹配算法的结论。该结论为搭载不同精度INS 载体
的重力场匹配算法的选择提供依据, 具有一定现实意义。 |
关键词: 重力辅助导航 INS 定位精度 匹配算法 适用性 |
DOI: |
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基金项目: |
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Applicability Study of Gravity Matching Algorithm for INS of Different Positioning Accuracy |
LIU Fan⁃ming,YAO Jian⁃qi,JING Xin,CHENG Shi |
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Abstract: |
Gravity aided navigation is an auxiliary navigation method based on INS (Inertial Navigation System), and the
positioning accuracy of INS directly affects the positioning effect of matching algorithm. The study of several classic correla⁃
tion and filtering matching algorithm and the matching experiment point out that, the change of INS position accuracy will
change the inferiors and superiors order between different matching algorithms, thus change the applicability of matching al⁃
gorithms. Then, the conclusion of matching algorithms suited for INS of different position accuracy is drawn. The conclusion
has certain practical significance, because it provides basis for the carriers equipped with INS of different accuracy to select
the applicable gravity matching algorithm. |
Key words: Gravity⁃aided navigation Positioning accuracy of INS Matching algorithm Applicability |