基于改进插值-迭代法的航磁测量数据向下延拓  

Downward continuation of aeromagnetic survey data based on an improved interpolation-iteration method

作　　者：王云鹏 张丽萍[1,2] 邱雪峰 宋颖 WANG Yunpeng;ZHANG Liping;QIU Xuefeng;SONG Ying(Xi’an Research Institute of Surveying and Mapping,Xi’an 710054,China;State Key Laboratory of Geo-Information Engineering,Xi’an 710054,China;Unit 61365,Tianjin 300140,China)

机构地区：[1]西安测绘研究所,陕西西安710054 [2]地理信息工程国家重点实验室,陕西西安710054 [3]61365部队,天津300140

出　　处：《测绘科学与工程》2021年第2期6-10,共5页Geomatics Science and Engineering

基　　金：国家重点研发计划资助项目(2018YFC1503806);国家自然科学基金资助项目(41774018)。

摘　　要：为实现航磁测量数据的向下延拓,提高延拓结果的应用效果,本文提出了改进插值-迭代法,并利用模拟和实测数据验证了新方法的有效性,实验结果表明:改进插值-迭代法在迭代过程中能够有效抑制高频噪声影响,减少迭代误差,提高延拓精度;模拟数据延拓精度达到4.3nT,比传统方法精度提高约10nT;实测数据延拓精度优于13nT,比传统方法提高2.6nT。In order to realize the downward continuation of aeromagnetic survey data and expand the application of continuation results,an improved interpolation-iteration method is proposed in this paper.The effectiveness of the new method is verified with simulated and measured data.The experimental results show that the improved interpolation-iteration method can effectively suppress the high frequency noise,reduce the iteration error and improve the downward continuation precision in iteration.The downward continuation precision of simulated data is 4.3 nT,about 10 nT higher than that of the traditional method.The downward continuation precision of measured data is better than 13 nT,2.6 nT higher than that of the traditional method.

关 键 词：航空磁力测量 向下延拓 积分-迭代法 改进插值-迭代法 地磁总强度 

分 类 号：P223[天文地球—大地测量学与测量工程]