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 three-component geomagnetic field can be got with high precision, which solves the important issue of shipboard geomagnetic field measurement
2019,41(5): 126-129 收稿日期:2018-10-15
DOI:10.3404/j.issn.1672-7649.2019.05.026
分类号:O441.2
基金项目:国家自然科学基金资助项目(51277176)
作者简介:朱兴乐(1985-),男,工程师,研究方向为舰船磁场分析及海洋磁场测量
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