Performance Analysis for Estimating a Target's Relaxation Frequencies From Frequency-Domain Electromagnetic Induction Data

被引：0

作者：

Kerr, Andrew J. ^{[1
]}

Scott, Waymond R., Jr. ^{[1
]}

McClellan, James H. ^{[1
]}

机构：

[1] Georgia Inst Technol, Dept Elect & Comp Engn, Atlanta, GA 30332 USA

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2022年 / 19卷

关键词：

Tensors; Magnetic domains; Electromagnetic interference; Sensors; Magnetic sensors; Frequency response; Magnetic separation; Analysis; Cramer-Rao lower bound (CRB; CRLB); electromagnetic induction (EMI); relaxation frequency;

D O I：

10.1109/LGRS.2021.3098762

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We present three analyses that explore the behavior of the Cramer-Rao lower bounds (CRBs) on estimating a target's relaxation frequency response from frequency-domain electromagnetic induction (EMI) data. In the first analysis, we show that the CRB on a given relaxation frequency is independent of the amplitudes of the other relaxations present in the target's relaxation frequency response. In the second, we show that the presence of a second relaxation frequency closer than one decade in frequency greatly increases the CRB on that relaxation frequency. Finally, we illustrate the behavior of the minimum root-mean-square error (RMSE) per relaxation frequency as a function of the number of relaxation frequencies present in the target's relaxation frequency response.

引用

页数：5

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