Position tracking system

Details Position tracking system Position tracking system

1991-01-11

1992-11-10

Black, Thomas G.

Boots, shoes, and leggings

364452, 342451, G01S 130

Patent

active

051630044

ABSTRACT:
The present invention is an improved position tracking system utilizing at least three cw transmitting stations generally symmetrically disposed about an area of interest, and also including a mobile receiving station receiving the transmitted signals, converting the received signals to a common frequency, and comparing the phase difference between the converted signals to produce and output signal indicating the location of the mobile station relative to any desired point or points in the area of interest.

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patent: 4774518 (1988-09-01), Fukuhara

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