Wide bandwidth time-domain electromagnetic sensor for metal target classification

被引：45

作者：

Nelson, CV ^{[1
]}

Cooperman, CB ^{[1
]}

Schneider, W ^{[1
]}

Wenstrand, DS ^{[1
]}

Smith, DG ^{[1
]}

机构：

[1] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA

来源：

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2001年 / 39卷 / 06期

关键词：

clutter reduction; electromagnetic induction; identification; landmine; magnetic transducers; metal detection; object detection; time-domain measurements;

D O I：

10.1109/36.927425

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：

A portable, wide bandwidth, time-domain electromagnetic sensor system has been developed and used extensively to measure the eddy current time-decay response of a wide variety of metal targets. The sensor has demonstrated the ability to measure metal target decay times starting approximately 3 to 5 mus after the transmitter current is turned off and target decay time constants as short as 1.4 mus. The sensor has demonstrated the potential for detecting very low-metal content mines due to the void they create in some types of electrically lossy soils. The development of the sensor is described in detail, and time-decay data are shown for a variety of metal targets, including low metal antitank and antipersonnel mines.

引用

页码：1129 / 1138

页数：10

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