New quasi-static magnetic and electric field imaging arrays and algorithms for object detection, identification, and discrimination

Neil J. Goldfine; Darrell E. Schlicker; Andrew P. Washabaugh; David Clark; Markus Zahn

doi:10.1117/12.357102

2 August 1999 New quasi-static magnetic and electric field imaging arrays and algorithms for object detection, identification, and discrimination

Neil J. Goldfine, Darrell E. Schlicker, Andrew P. Washabaugh, David Clark, Markus Zahn

Author Affiliations +

Proceedings Volume 3710, Detection and Remediation Technologies for Mines and Minelike Targets IV; (1999) https://doi.org/10.1117/12.357102
Event: AeroSense '99, 1999, Orlando, FL, United States

Abstract

Unlike radar-based imaging technologies that use electromagnetic waves, quasistatic imaging technologies operate at lower frequencies where electric and magnetic fields are decoupled. Magnetoquasistatic (MQS) devices, such as metal detectors, that impose magnetic fields satisfy the diffusion equation in conducting media and Laplace's equation in air or poorly conducting soils. Electroquasistatic (EQS) devices satisfy Laplace's equation. In Laplacian or diffusion decay, the amplitude of the magnetic and electric fields decay exponentially with distance from the drive windings or electrode. For quasistatic sensors, objects are detected and imaged through perturbations to the applied magnetic or electric fields that change the mutual transimpedances or transadmittances at the sensor terminals, rather than through time delays of reflected electromagnetic waves as in GPR.

Citation Download Citation

Neil J. Goldfine, Darrell E. Schlicker, Andrew P. Washabaugh, David Clark, and Markus Zahn "New quasi-static magnetic and electric field imaging arrays and algorithms for object detection, identification, and discrimination", Proc. SPIE 3710, Detection and Remediation Technologies for Mines and Minelike Targets IV, (2 August 1999); https://doi.org/10.1117/12.357102

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available