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惯性导航系统的导航误差随着时间积累发散,无法长时间内保持高精度,要想使其完全自主导航,必须加以其它的导航方式进行辅助,如地磁匹配辅助等.在地磁辅助导航中,地磁区域的选取能够在很大程度上影响辅助导航结果的精度.本文引用了地磁熵和地磁差异熵作为地磁辅助导航区域选取的参考准则.在分析ICCP算法理论的基础,提出了具体的实现算法,利用该算法在选择区域进行地磁辅助导航的仿真.经仿真实验验证,地磁熵和地磁差异熵对地磁导航区域的选取具有一定的指导意义,为提高地磁辅助导航的精度提供了一种新的手段.
The inertial navigation system’s navigation error diverges with time, can not maintain high accuracy for a long time, in order to make it completely autonomous navigation, you must add other navigation methods to assist, such as geomagnetic matching aids, etc. In geomagnetic navigation, geomagnetism The selection of the region can largely affect the accuracy of the aided navigation results.This paper refers to the geomagnetic entropy and geomagnetic differential entropy as the reference criteria for the selection of geomagnetic aided navigation area.After analyzing the ICCP algorithm theory, The algorithm is used to simulate geomagnetic navigation in the selected area.After simulation, the geomagnetic entropy and geomagnetic difference entropy have certain guiding significance for the selection of geomagnetic navigation area, which provides a new means to improve the accuracy of geomagnetic navigation. .