Interferometric locating system

Details Interferometric locating system Interferometric locating system

1978-08-31

1980-07-29

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 302

Patent

active

042153450

ABSTRACT:
A system for determining the position of a vehicle or other target that emits radio waves, which is of the type that senses the difference in time of arrival at spaced ground stations of signals from the vehicle to locate the vehicle on a set of intersecting hyperbolas. A network of four ground stations detects the radio emissions from the vehicle, and by means of cross correlation derives the relative signal delay at the ground stations from which the vehicle position is deduced. Because the signal detection is by cross correlation, no knowledge of the emission is needed, which makes even unintentional radio noise emissions usable as a locator beacon. By positioning one of the four ground stations at an elevation significantly above the plane of the other three stations, a three dimensional fix on the vehicle is possible.

REFERENCES:
patent: 2940076 (1960-06-01), Bissett et al.
patent: 2962714 (1960-11-01), Meixell et al.
patent: 3137854 (1964-06-01), Anderson
patent: 3249911 (1966-05-01), Gustafsson
patent: 3793635 (1974-02-01), Potter

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