舰船电子工程Issue(7)：75-79,5.DOI:10.3969/j.issn1672-9730.2015.07.020
基于二维高斯样条函数的水下地磁被动定位
Underwater Geomagnetic Passive Location Based on the 2-D Gauss Spline Function
摘要
Abstract
As varies of matching algorithms have been used as the major methods for correcting the errors of INS on un‐derwater geographic information ,a new pattern of geomagnetic passive location which is based on 2‐D Gauss spline function is given in this paper .Firstly ,the algorithm to reconstruct the local grid geomagnetic base‐map with the 2‐D Gauss spline function is introduced ,then by which the measured geomagnetic is expressed as continual analytical equation .Finally ,the classical extended Kalman filter is introduced to estimate the target's position with measured geomagnetic as measurement containing the information of target's position .This method can be applied without using any matching algorithms ,as a re‐sult it is free from the influence of the restriction by using these matching algorithms .Simulation is done on 0 .2′× 0 .2′geo‐magnetic anomaly database ,and the simulation result proves that the mean error of analytic equation of local geomagnetic a‐nomalies is less than 0 .26nT ,and the mean location errors in longitude and latitude are 0 .96 and 0 .33 sea mile respectively .关键词
被动定位/高斯样条函数/局部地磁场/匹配算法Key words
passive location/Gauss spline function/local geomagnetic field/matching algorithm分类
天文与地球科学引用本文复制引用
王志刚,顾雪峰..基于二维高斯样条函数的水下地磁被动定位[J].舰船电子工程,2015,(7):75-79,5.基金项目
国家自然科学基金项目（编号41201478，41374018）；中国博士后科学基金项目（编号2013M542533）资助。 （）
