【摘要】 针对固定翼时间域航空电磁探测过程中线圈姿态变化会给测量数据带来偏差的问题,对线圈姿态进行影响分析与校正。基于法拉第电磁感应定律,利用线圈坐标系和惯性坐标系之间的转换关系,推导线圈姿态变化时的动态响应和静态响应表达式。仿真研究姿态角度、角度变化率对动态响应和静态响应的影响,并基于电磁响应理论对线圈姿态变化产生的动态响应和静态响应进行校正。研究结果表明:线圈姿态变化所产生的动态响应和静态响应基本得到校正,校正后的剖面数据质量得到很大改善,均方根相对误差由22.00%降低到3.04%。更多还原

【Abstract】 Aiming at the problem that change of coil attitude brings error to the measured data during fixed-wing time-domain airborne electromagnetic survey, influence and correction of coil attitude were studied. Based on Faraday’s law of electromagnetic induction, the dynamic response and the static response by change of coil attitude were calculated by using conversion relation between coil coordinate system and inertial coordinate system. The influences of the angle and the angle rate on dynamic response and static response were studied. Meanwhile,dynamic response and static response were corrected on the basis of theory of electromagnetic response. The results show that the dynamic response and static response generated by coil attitude change are basically corrected. The quality of profile data is improved after correction, and the root mean square relative error is reduced from 22.00% to 3.04%.更多还原