地磁匹配算法的研究现状及改进策略

Research Status of Magnetic Matching Algorithm and Its Improvement Strategies

地磁导航算法是地磁辅助导航系统的核心。首先,分析了地磁匹配算法的基本原理;然后,以此为基础从特征空间、相关性度量、搜索空间和搜索策略4个方面总结了地磁匹配算法的研究现状和改进方法;各种新方法的引入为匹配策略的改进提供了新的思路;最后,根据工程应用中的实际问题,指出了地磁导航算法的改进策略,为其工程化应用奠定了基础。

Magnetic navigation algorithm is the key to geomagnetic aided navigation systems. At first, the basic principle of the magnetic matching algorithms is analyzed. On the basis of this, the research status and improving methods are summarized from four aspects of characteristic space, relativity measurement, search space and search strategy. The introducing of various new methods supplies some new ideas to modify the matching method. Finally, based on the problems appeared in engineering applications, the improvement strategies of the geomagnetic navigation algorithm are pointed out, which can be taken as a reference for the algorithm＇s engineering application.