MULTIPLE SENSOR MAGNETOMETER WITH TEMPORAL NOISE REJECTION AND CONTROLLABLE SPATIAL RESPONSE ON A MOVING PLATFORM

Abstract

A mobile magnetometry processing system which scans an area in order to measure the magnetic field strength over the area, comprising: a plurality of N sensors for sensing the magnetic field of the area being scanned, each sensor generating an output signal, for example, a voltage, which is a function of the magnetic field it scans, the sensor being aligned in the general direction of the motion of the system; a plurality of N sets of means for weighting, for receiving and weighting the N signals from the means for sensing, each of the N sets comprising M weighting means; a plurality of M summers, each have N inputs, one from each of the N sets of means for weighting, for summing its N input weighted signals; a plurality of M filters each having an input which is connected to the output of a summer, for delaying the exit of an input signal by an amount of time equal to the time required for a sensor to advance the distance to the nearest adjacent sensor, the filtering process comprising a convolution; means, associated with the M filters, for measuring the velocity of the magnetometry processing system and thereby determining the delay of the M filters; and an output summer, whose M inputs are connected to the outputs of the M filters, the output signal being a measure of the strength of the magnetic field of the area being traversed by the sensors.

Source: Google Patents

35 USC §181 Secrecy Order

Inventor

• 1GEORGE W. BYRAM

Sensitive facility: San Diego CA (SAIC/General Dynamics)

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