Agile electromagnetic geolocation

Details Agile electromagnetic geolocation Agile electromagnetic geolocation

2008-09-04

2010-10-19

Phan, Dao L (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Position indicating

C342S463000

Reexamination Certificate

active

07817092

ABSTRACT:
The unknown location of an electromagnetic transmitter is determined by receiving the radiation at plural sensors distributed over an area. Received power is determined at each sensor, and normalized by taking ratios of powers from the various sensors. A plurality of transmitter locations are hypothesized, and losses from each hypothesized location to each sensor are estimated or measured. The losses are normalized. The differences between the normalized powers and normalized losses are integrated, and the mean-square values determined. The location at which the mean-square value is minimum is deemed to be the location of the transmitter.

REFERENCES:
patent: 4060809 (1977-11-01), Baghdady
patent: 2004/0068178 (2004-04-01), Govari

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