【摘要】 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.更多还原

【Abstract】 Navigation error in inertial navigation system( INS),increased by accumulation of time,can not maintain high accuracy for a long time. In order to make it fully autonomous navigation,other methods navigation must be assisted on INS,like geomagnetic-matching navigation. The geomagnetic region selected which is suitable or not leads to result level of geomagneticmatching aided navigation. Geomagnetic entropy and geomagnetic variance entropy were chosen as reference standards of geomagnetic-matching navigation region. The practical implementation algorithm was proposed based on analyzing the theoretical base of ICCP algorithm and used to simulate geomagnetic added navigation in selected region. Simulation results show that geomagnetic entropy and geomagnetic variance entropy can give some reference for geomagnetic matching navigation region selecting and provide a new method to improve accuracy of geomagnetic-matching navigation.更多还原