Method of determining a position using satellites

Details Method of determining a position using satellites Method of determining a position using satellites

1990-08-23

1992-04-14

Hellner, Mark

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

Directive

Position indicating

342352, 342357, H04B 7185

Patent

active

051051982

ABSTRACT:
A method of determining the position of an observation point on the earth using M satellites on geosynchronous orbits having predetermined orbit inclination angle such that N (<M) satellites are in the range of vision of the observation point. One of the N satellites generates a reference signal at a known time. This reference signal is sent directly to the observation point, sequentially relaved to the remaining subsequent satellites and transmitted from the respective satellites in order upon receiving the reference signal from a preceding adjacent satellite to the observation point. The observation point measures the differences in time of reception of the signals from the N satellites. The position of the observation point is determined as an intersecting point of the hyperboloids each having foci on adjacent two of the satellite positions.

REFERENCES:
patent: 4987420 (1991-01-01), Inamiya

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