基于Levernberg-Marquardt算法的动态磁性检测站磁定位方法研究

摘要

针对舰船动态磁性检测站需要确定磁场测量点坐标以进行舰船磁性分析的情况,利用Levernberg-Marquardt算法及磁体模拟法提出了一种动态磁性检测站磁定位方法;该方法利用包含定位参数的舰船磁场模型设计了目标函数,通过Levernberg-Marquardt算法经由定位参数的初始估计收敛到使目标函数最优的定位参数解;船模实验证明,定位结果较准确,能用来描述动态测磁时舰船磁场测量面上测量点的位置,在此基础上能通过舰船磁场推算掌握舰船的磁场分布情况,进而快速制定舰船消磁决策.%Aimed at the necessary of acquiring the position of measure ment points during the dynamic measurement,the magnetic location method for dynamic magnetic check ranges is presented.The method constructs the objective function including the location parame ters,and applies Levernberg-Marquardt algorithm to find the optimum of the objective function.By means of ship's model experiments,it is demonstrated that the new localization method could identify ship's track,speed,and course relative to the sensors with high numerical precision,on the basis of this,the ship's magnetic signature could be mastered through magnetic field continuation.As a result,it is could be determined whether the ship's magnetic signature should be controlled.