基于AUV的海洋磁力测量技术现状及误差来源分析

The Current Situation and Error Source Analysis of Marine Magnetic Survey Based on AUV

介绍了国内外基于AUV的海洋磁力测量研究现状,针对国内AUV及海洋磁力仪研究相对滞后的情况,以Iver2型AUV开展海洋磁力测量为例,研究了AUV拖曳式海洋磁力测量的噪声检测、位置归算等技术,并与船测数据对比,重点分析了Iver2型AUV拖曳式磁力测量误差来源,结果表明:Iver2型AUV拖曳磁力仪的最佳距离为5 m;观测数据中仍包含位置归算误差、日变改正误差及传感器误差等,以上结论将为我国开展AUV海洋磁力测量技术研究提供参考。

The research status of marine magnetic survey with AUV at home and abroad are firstly introduced in this paper,and in view of the relative lag of domestic research on AUV and marine magnetometer,an example that marine magnetic survey with Iver2 AUV is taken,focusing on the noise detection,position reduction and other technologies of AUV towed marine magnetic survey,and makes a comparative analysis with ship towed survey data,the error sources of magnetic survey based on Iver2 AUV are analyzed emphatically,the results show that the optimal distance of Iver2 AUV towed magnetometer is 5m;and the observation data still contain position reduction error,diurnal correction error and sensor error,the conclusions of this paper will provide references for the technology research of marine magnetic survey with AUV in China.