Compensation Method of LTS SQUID Gradiometer Data  

低温超导航磁梯度张量数据补偿方法研究

作　　者：Ruidong Hou Ziqi Guo Hua Guo Yanchao Qiao Jianying Liu Jingxin Qin 侯瑞东;郭子祺;郭华;乔彦超;刘建英;秦静欣(中国科学院空天信息创新研究院,北京100101;中国科学院大学,北京100049;中国自然资源航空物探遥感中心,北京100083)

机构地区：[1]Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing,China 100101 [2]University of Chinese Academy of Sciences,Beijing,100049 [3]China Aero Geophysical Survey and Remote Sensing Center for Natural Resources,Beijing,China 100083

出　　处：《Applied Geophysics》2025年第1期132-145,234,共15页应用地球物理(英文版)

基　　金：Earth Observation and Navigation Special,Research on Low Temperature Superconducting Aeromagnetic Vector Gradient Observation Technology(2021YFB3900201)project;State Key Laboratory of Remote Sensing Science project.

摘　　要：In this paper,we investigate the method of compensating LTS SQUID Gradiometer Systems data.By matching the attitude changes of the pod in fl ight to the anomalies of the magnetic measurement data,we find that the yaw attitude changes most dramatically and corresponds best to the magnetic data anomaly interval.Based on this fi nding,we solved the compensation model using least squares fi tting and Huber's parametric fi tting.By comparison,we found that the Huber parametric fit not only eliminates the interference introduced by attitude changes but also retains richer anomaly source information and therefore obtains a higher signal-to-noise ratio.The experimental results show that the quality of the magnetometry data obtained by using the compensation method proposed in this paper has been signifi cantly improved,and the mean value of its improvement ratio can reach 118.93.本文对低温超导航磁梯度张量数据补偿方法进行研究。根据实际吊舱飞行中的姿态变化与磁测数据的对应关系,偏航姿态的变化最为剧烈且与磁测数据的异常区间对应最好的特点,使用最小二乘拟合和Huber范数拟合的方式分别求解补偿模型,并采用Huber范数拟合的方式,能够在消除姿态变化的基础上可更多的保留异常源信息,获得更高信噪比信号。实验结果表明:经过本文提出补偿方法得到的磁测数据质量可大幅提高,其改善比均值可达118.93。

关 键 词：LTS SQUID MAGNETIC GRADIENT TENSOR measurement MAGNETIC compensation 

分 类 号：H31[语言文字—英语]