一种基于GCV法改进的频域内位场正则化向下延拓的参数选取方法  

A new parameter selection method for potential field's downward continuation in frequency-domain improved with GCV method

作　　者：刘帆 李正文 种洋 LIU Fan;LI Zhengwen;ZHONG Yang(61365 Troops,Tianjin 300140,China;61206 Troops,Beijing 100042,China;Institute of Geospatial Information,Information Engineering University,Zhengzhou 450001,China;State Key Laboratory of Geo-information Engineering,Xi'an 710054,China;Department of Navigation,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]61365部队 [2]信息工程大学地理空间信息学院 [3]61206部队 [4]地理信息工程国家重点实验室 [5]海军工程大学导航工程系

出　　处：《物探化探计算技术》2018年第1期73-81,共9页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家自然科学基金(41476087)

摘　　要：这里给出了一种在频域内位场正则化向下延拓方法中,用于选取最优正则化参数的极小化泛函。通过不同的正则化迭代方法进行仿真数据和实测航磁数据的向下延拓实验,来验证此泛函用于选取参数的有效性,实验结果证明了此方法用于位场向下延拓是可行和有效的。A minimization-function was given for selecting downward continuation's optimal regularization parameter in frequency-domain.The effectiveness of the minimization-function was verified through the downward continuation experiment of the simulation data and the airborne observed data with different regularization iterative methods.The experiment's result proved that:this minimization-function is very feasible and efficacious for potential field's downward continuation.

关 键 词：向下延拓 正则化参数 地磁场 L曲线 GCV 

分 类 号：P631.2[天文地球—地质矿产勘探]