Development of a handheld mine detection system using a magnetoresistive sensor array

Richard J. Wold; Catherine A. Nordman; Eugene Lavely; Mark Tondra; Erik H. Lange; Mark Prouty

doi:10.1117/12.356984

2 August 1999 Development of a handheld mine detection system using a magnetoresistive sensor array

Richard J. Wold, Catherine A. Nordman, Eugene Lavely, Mark Tondra, Erik H. Lange, Mark Prouty

Proceedings Volume 3710, Detection and Remediation Technologies for Mines and Minelike Targets IV; (1999) https://doi.org/10.1117/12.356984
Event: AeroSense '99, 1999, Orlando, FL, United States

Abstract

A handhold mine detection system is under development using a 2D array of spin dependent tunneling (SDT) magnetorestrictive sensors, which will measure the x, y and z scalar components of the electromagnetic (EM) field. SDT sensors directly measure the EM field component along an axis of the sensor over a wide frequency and intensity range, which make them ideal EM sensors. The sensors are small and are relatively inexpensive due to the massive investment in this technology by the computer industry for their use in disc storage devices. A system was designed with primary emphasis on the unique capabilities of the sensor elements and sensor array design for landmine detection and discrimination. Much of the early work concentrated on theoretical models verified with measured laboratory time domain EM response of metallic components of typical low metal landmines. The modeling results have provided the information needed to define performance requirements for the SDT sensor and a design of an array of SDT sensor to measure the x, y and z spatial components expected from the landmines. A parallel effort to develop the supporting theory for optimal interpretation of the multi-axis sensor array, has resulted in significant progress in developing an improved methodology for distinguishing the signature of landmine targets from metallic clutter. We have adopted an integrated approach to the sensor design in which the data requirements for effective discrimination have driven the design while meeting the practical and engineering requirements as well.

Citation Download Citation

Richard J. Wold, Catherine A. Nordman, Eugene Lavely, Mark Tondra, Erik H. Lange, and Mark Prouty "Development of a handheld mine detection system using a magnetoresistive sensor array", Proc. SPIE 3710, Detection and Remediation Technologies for Mines and Minelike Targets IV, (2 August 1999); https://doi.org/10.1117/12.356984

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