基于半参数模型的海洋磁力测量系统误差补偿  

Systematical error compensation of marine magnetic survey based on semiparametric model

作　　者：马晓宇 欧阳永忠 周巨锁 李正元 汤民强 MA Xiaoyu;OU YANG Yongzhong;ZHOU Jusuo;LI Zhengyuan;TANG Minqiang(South China Sea Marine Survey Center,MNR,Guangzhou 510300,China;Key Laboratory of Marine Environmental Survey Technology and Application,MNR,Guangzhou 510300,China;School of Smart Marine Science and Technology,Fujian University of Technology,Fuzhou 350118,China;Key Laboratory of Marine Intelligent Equipment in Fujian Province,Fuzhou 350118,China)

机构地区：[1]自然资源部南海调查中心,广州510300 [2]自然资源部海洋环境探测技术与应用重点实验室,广州510300 [3]福建理工大学智慧海洋科学技术学院,福州350118 [4]海洋智能装备福建省高校重点实验室,福州350118

出　　处：《海洋测绘》2024年第4期6-11,共6页Hydrographic Surveying and Charting

基　　金：国家自然科学基金资助项目(42174013);自然资源部海洋环境探测技术与应用重点实验室自主设立课题资助项目(MESTA-2022-D006);自然资源部海洋测绘重点实验室开放基金资助项目(2021B11)。

摘　　要：针对海洋磁力测量系统误差补偿时所选系统误差模型补偿不充分的情况,引入半参数模型进行精化补偿。使用简化补偿模型进行测线系统误差滤波与推估时,加入表示模型误差的非参数分量,来弥补所选系统误差模型在描述实际系统误差变化时的不足,采用自然样条函数法和L曲线法确定正则矩阵和正则化参数,对半参数模型进行补偿最小二乘求解。实验分析表明,引入半参数模型后,测线网交叉点不符值接近于0,中误差达到0.001nT,测线网精度显著提高。采用Akaike信息量准则对不同补偿方法进一步评估发现,引入半参数模型后,补偿效果受所选系统误差模型的依赖程度明显降低,拓宽了不同系统误差模型的使用条件。In view of the fact that the selected error model can’t fully represent the change of systematical error in the systematical error compensation of marine magnetic survey,the semiparametric model is introduced for refinement.When using a simplified compensation model for survey line systematical error filtering and estimation,the nonparametric component representing the model error is added to make up for the deficiency of the selected error model in describing the actual error.The natural spline function method and L-curve method are used to solve the regularization matrix and regularization parameters,and the semiparametric model is solved by the compensated least square method.The experimental analysis shows that after the introduction of the semiparametric model,the inconsistent value of the intersection of the survey line network approaches 0,with a mean square error of 0.001nT,and the accuracy of the survey line network is significantly improved.The Akaike information criterion is used to further evaluate different compensation methods.It is found that the dependence of the compensation effect on the selected system error model is greatly reduced after the introduction of the semiparametric model,expanding the usage conditions of different system error models.

关 键 词：海洋磁力测量 系统误差补偿 半参数模型 简化补偿模型 Akaike信息量准则 

分 类 号：P229.24[天文地球—大地测量学与测量工程]