舰船磁场测量真值的一种估算方法  

A True Value Estimation Method of Ship Magnetic Field Measurement

作　　者：王华征[1] 单志超[2] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200030 [2]海军航空工程学院电子信息工程系,烟台264001

出　　处：《武汉理工大学学报（交通科学与工程版）》2010年第5期891-894,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国防预研项目资助(批准号:2010301010101)

摘　　要：针对手提式三分量测磁仪磁探头入水后由于水平坐标与舰船水平坐标关系未知而导致无法测量舰船磁场水平分量的情况,采用遗传算法,通过使舰船磁场建模误差最小来寻找最优的磁探头偏转角度,从而可以根据手提式测磁仪所测得的三分量磁场对舰船的真实三分量磁场进行估计.这改变了以往仅依靠测得的舰船磁场垂直分量来估计舰船磁场的做法,充分利用了所测得的水平分量,提高了对舰船磁场估计的准确度.仿真的结果表明,该方法具有一定的精度和稳定性.For the magnetic sensor horizon coordinate can be not concordant with the ship horizon coordinate,currently the horizon components of ship magnetic can＇t measured by the portable 3components magnetometer.A method is proposed to estimate the true value of ship magnetic field.Based on ship magnetic modeling error least,firstly this method finds the optimal deflection angle of magnetic sensor coordinate with the ship coordinate by genetic algorithm,and then gets the ship magnetic field through the relationship of the measurement value and the ship magnetic field value.This method ends the history that one estimates the ship magnetic field just by the vertical component of ship magnetic,and makes the best of the horizon components measured,and makes the estimations to the ship magnetic field more accuracy.The simulation results show this method is precise and stable.And the estimation value of ship magnetic field is useful to appraise the ship magnetic field during degaussing and after degaussing.

关 键 词：磁场测量 磁场建模 遗传算法 真值估计 

分 类 号：TN911.23[电子电信—通信与信息系统]