基于TERCOM算法的重力匹配

基金项目: 国家创新研究群体科学基金资助项目(40721001)；国家自然科学基金资助项目(40871172)

详细信息

A Gravity Matching Algorithm Based on TERCOM

¹School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 国家创新研究群体科学基金资助项目(40721001)；国家自然科学基金资助项目(40871172)

摘要: 研究了利用地形轮廓匹配(TERCOM)算法进行重力匹配辅助导航,分析了TERCOM算法对不同重力场分布区域的适应性。模拟试验证明,TERCOM算法简单易行,当重力场粗糙度达到3.7 mGal时,重力测量误差超过3 mGal,定位误差也在1个格网单位以内,粗糙度和坡度方差与匹配定位精度的强相关性是选取匹配区域的较好指标。
- TERCOM算法 /
- 重力匹配 /
- 重力辅助导航
Abstract: We study TERCOM algorithm in gravity matching and analyze its adaptability.The experimental result shows that this algorithm can do precise matching easily.There is a significant correlation between coordinates error and roughness.It is gradient variance.Roughness and gradient variance are good indices to select matching areas.
- TERCOM algorithm /
- gravity matching /
- gravity aided navigation