基于熵的地磁匹配定位算法

Algorithm of Geomagnetic Matching Localization based on Entropy

地磁匹配定位是近年来发展起来的新技术,针对地磁匹配定位中的匹配算法问题,引入了熵的概念,定义了地磁信息熵和地磁差异熵,提出了地磁信息熵和地磁差异熵综合的匹配算法,详细分析了其基本原理和实现过程。仿真实验表明,地磁熵算法的匹配误差并不随实时数据测量误差的增加而增加,该算法计算速度快、具有良好的抗测量误差干扰的能力,符合匹配精度和速度的要求。

The geomagnetic matching localization is a new developmental technology in recent years.The entropy in the information theory has been inducted to geomagnetic match aiming at the geomagnetic matching problem.The conception of geomagnetic information entropy and geomagnetic difference entropy were presented.A matching algorithm was put forward based on geomagnetic information entropy and geomagnetic difference entropy,and its basic principle and process of realization were analyzed at the same time.The matching error of geomagnetic entropy algorithm was not increased with the metrical data error by simulation.This technology that could accord with the request of matching algorithm run quickly and has good ability of resisting measuring error.