Localizing magnetic dipoles using spatial and temporal processin

Details Localizing magnetic dipoles using spatial and temporal processin Localizing magnetic dipoles using spatial and temporal processin

1996-03-05

1997-11-04

O'Shea, Sandra L.

Electricity: measuring and testing

Magnetic

Displacement

324244, 32420714, 32420726, 364559, G01R 3302

Patent

active

056843968

ABSTRACT:
Processing methods and apparatus that process magnetometer data derived from an array of magnetometer sensors and outputs both the position and velocity of a magnetic dipole. In the method and apparatus, (a) a set of actual magnetic field measurements of a magnetic dipole is collected using the array of magnetic sensors. Then (b), a trajectory for the magnetic dipole is hypothesized. Then (c), a set of estimated magnetic field measurements is determined that would be formed by a magnetic dipole moving along the hypothesized trajectory. Then (d), the actual magnetic field measurements are compared with the estimated magnetic field measurements. Then (e), based on the comparison, a new trajectory for the magnetic dipole is hypothesized. Steps (c) through (e) are repeated until agreement between the actual magnetic field measurements and the estimated magnetic field measurements is deemed sufficiently close. The trajectory is displayed for viewing on a display.

REFERENCES:
patent: 5239474 (1993-08-01), Eaton, Jr. et al.
patent: 5381095 (1995-01-01), Andrews
Keiichi Mori, "Application of Weight Functions to the Magnetic Localization of an Object", printed in the IEEE Transactions on Magnetics 25 (1989) May, No. 3, New York, U.S., pp. 2726-2731.

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