固定翼时间域航空电磁系统的线圈姿态影响研究  

Study on Influence of Coil Attitude on Fixed-wing Time-domain Airborne Electromagnetic System

作　　者：西永在[1] 丁志强[1] 廖桂香[1] 路宁[1] 郑红闪[1] 

机构地区：[1]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000

出　　处：《工程地球物理学报》2016年第3期327-333,共7页Chinese Journal of Engineering Geophysics

基　　金：物化探研究所基本科研业务费专项资金项目(编号:AS2013J04)

摘　　要：在固定翼时间域航空电磁测量时,固定在飞机上的发射线圈和吊舱内的接收线圈受飞行速度、风向和地形等的影响,会发生姿态变化,导致线圈与大地之间的耦合关系发生变化,给测量的电磁数据带来姿态误差,降低系统测量的分辨率,因此有必要对线圈姿态误差规律进行研究。在建立发射线圈和大地系统双坐标系以及飞机姿态变化时坐标系间转换矩阵的基础上,推导了感应一次场的计算公式,重点分析了线圈发生摇摆、俯仰及偏航旋转时对一次场以及二次场的影响,为姿态误差的校正方法研究奠定基础。In the fixed-wing time domain airbore electromagetic measurement,fixed receiver coil in the plane of the transmitting coil and the pod within the affected flight speed,wind and terrain will vary in posture,which causes the changes of the coupling relation between the coil and the earth,brings attitude errors of the electromagnetic data and reduces the resolution of the measurement.It is necessary to study the coil attitude error rule.In this paper,two coordinate systems of emission coil and the earth system is established and the matrix is transformed when aircraft attitude changes.The calculating formula of induction time field is deduced,focusing on the analysis of the coil sway,pitch and yaw rotation on a field and the two-field effect,which lays the foundation for the study of correction method of attitude error.

关 键 词：固定翼时间域航空电磁系统 线圈姿态 旋转矩阵 姿态误差 

分 类 号：P631.3[天文地球—地质矿产勘探]