船载地磁测量中的磁干扰补偿方法
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摘要
船载三分量地磁测量时会受到舰艇磁化磁场的干扰,为消除干扰需要获得准确的舰艇磁化特性参数。提出一种补偿舰艇磁化磁场干扰的方法,通过测量舰艇摇摆状态下绕圆行驶的磁场值,采用AMGA求解出舰艇的感应与固定磁性参数,从而可将舰艇磁性干扰有效消除。此方法减少了操作步骤,对舰艇的航行姿态没有严格要求,且充分利用了多姿态下数据的差异性,求解结果不易受到外部条件的干扰。仿真显示此方法求解速度快稳定性强,可获得较高精度的海洋三分量地磁数据,从而解决了船载地磁测量中的关键问题。
Ship's magnetization field would disturb measurement of shipboard three-component geomagnetic field, thus its magnetized parameters should be got exactly to remove. A method is proposed to eliminating ship's magnetic interference.The measuring data is got when ship sails rocking in circle, then AMGA algorithm is used to calculate ship's induced and permanent magnetic parameters, so ship's magnetic interference is removed effectively. The new method reduces the operating steps and doesn't have strict attitude restriction, more data in differences has been fully used and the result is not interfered easily by external condition. Simulation indicated the method has fast computing speed and good stability, and threecomponent geomagnetic field can be got with high precision, which solves the important issue of shipboard geomagnetic field measurement.
Ship's magnetization field would disturb measurement of shipboard three-component geomagnetic field, thus its magnetized parameters should be got exactly to remove. A method is proposed to eliminating ship's magnetic interference.The measuring data is got when ship sails rocking in circle, then AMGA algorithm is used to calculate ship's induced and permanent magnetic parameters, so ship's magnetic interference is removed effectively. The new method reduces the operating steps and doesn't have strict attitude restriction, more data in differences has been fully used and the result is not interfered easily by external condition. Simulation indicated the method has fast computing speed and good stability, and threecomponent geomagnetic field can be got with high precision, which solves the important issue of shipboard geomagnetic field measurement.
引文
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[2]肖昌汉,卢庆芳,王智勇,等.舰船任意姿态下消磁系统电流变化关系[J].海军工程大学学报,2002,14(1):14-18.
[3]LESUR V,CLARK T,TURBITT C,et al.A technique for estimating the absolute vector geomagnetic field from a marine vessel[J].Journal of Geophysics and Engineering,2004,1:109-115.
[4]周国华,肖昌汉,刘大明,等.基于快速多极子的舰船感应磁场快速预报方法[J].哈尔滨工程大学学报,2015,(36)10:1380-1385.
[5]陈杰,鲁习文.舰船感应磁场预测的一种新方法[J].物理学报,2010,59(1):239-244.
[6]郭成豹,何明,周耀忠.积分方程法计算舰船感应磁场[J].海军工程大学学报,2001,13(6):71-74.
[7]高俊吉,刘大明,姚琼荟.舰船固定磁性分解方法研究[J].哈尔滨工程大学学报,2007,28(10):1165-1170.
[8]闫辉,肖昌汉.一种海洋环境地磁场三分量的测量方法[J].海军工程大学学报,2005,17(6):80-83.
[9]闫辉,肖昌汉,苏广东.多模型卡尔曼滤波在地磁场航海测量中的应用[J].测绘科学,2010,35(1):41-43.
[10]巩敦卫,孙晓燕.变搜索区域多种群遗传算法[J].控制理论与应用,2006,23(2):256-260.
[11]SRINIVASA K G,VENUGOPAL K R,PATNAIK L M.Aselfadaptive migration model genetic algorithm for data mining applications[J].Information Sciences,2007,177(20):4295-4313.