Passive ranging using global positioning system

Details Passive ranging using global positioning system Passive ranging using global positioning system

1998-11-30

2000-11-21

Tarcza, Thomas H.

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

Directive

Including a satellite

34235706, 342126, H04B 7185

Patent

active

061509795

ABSTRACT:
A method for determining distance from a target to an observation station using a Global Positioning System satellite as a radiation source and first and second observation station located receivers. The first receiver receives reflected position determinative satellite radio frequency signals and the second receiver receives direct position determinative satellite radio frequency signals. The time difference between satellite radio frequency signals arriving at the first and second receivers is calculated and combined with difference distance data and angular, azimuth and elevational position data and the distance from the target to observation point is determined.

REFERENCES:
patent: 3897150 (1975-07-01), Bridge et al.
patent: 4393382 (1983-07-01), Jones
patent: 4433334 (1984-02-01), Caputi
patent: 5187485 (1993-02-01), Tsui et al.
patent: 5912644 (1975-07-01), Wang

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