Contour Constraint Based Geomagnetic Matching Method

Ying Liu; Meiping WU; Xiaoping HU; Hongwei Xie

doi:10.11728/cjss2007.06.505

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Contour Constraint Based Geomagnetic Matching Method

Ying Liu Meiping WU Xiaoping HU Hongwei Xie

Year: 2007 Journal: Chinese Journal of Space Science Vol: 27 (6)Pages: 505-505 Publisher: Science Press

DOI: 10.11728/cjss2007.06.505

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Abstract

地磁辅助导航是组合导航技术研究的新方向.简要介绍了地磁辅助导航的基本原理和发展现状,并重点对地磁匹配方法进行了研究.地磁匹配是利用地磁图进行定位的方法,位置输出可用于限制惯性导航系统的误差积累.提出了一种改进的基于等值线约束的相关匹配算法,能够有效消除导航系统的初始位置误差并能限制匹配过程中惯性导航系统的积累误差.仿真实验证明,该算法能有效提高相关匹配的实时性,并能把定位精度控制在地磁数据网格间距以内.该算法对航向误差具有一定的适应性.

Keywords:

Earth's magnetic field Constraint (computer-aided design) Matching (statistics) Computer science Geodesy Geophysics Geology Algorithm Remote sensing Physics Mathematics Geometry Magnetic field Statistics

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Contour Constraint Based Geomagnetic Matching Method

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