Elliptical satellite system which emulates the characteristics o

Details Elliptical satellite system which emulates the characteristics o Elliptical satellite system which emulates the characteristics o

1995-03-24

1998-12-01

Urban, Edward F.

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

455428, 455430, 342356, H04B 7185

Patent

active

058452060

ABSTRACT:
An elliptical satellite system which carries out communication. The satellite orbits a height above the earth less than that necessary for geosynchronous orbits. When the satellite is near the apogee portion of its orbit, its velocity approximates the rotational velocity of the earth, and during that period it appears to hover over the earth. Each ground station on the earth always communicates with a satellite within a predetermined position of its apogee, and hence that satellite appears to the ground station to hover over the earth. The satellite hence does not communicate with any earth station when it is outside of that apogee portion. During the times when the satellite is outside the apogee portion, its communication is therefore shut off to prevent any possibility of interfering with geosynchronous satellites. During this time, the power supply on the satellite is also used to charge a battery on the satellite. This enables the power supply to be made smaller by an amount equivalent to the duty cycle of the satellite: during the time which it is on.

REFERENCES:
patent: 3163820 (1964-12-01), Hight
patent: 3340531 (1967-09-01), Kefalas et al.
patent: 3497807 (1970-02-01), Newton
patent: 4731870 (1988-03-01), Black et al.
patent: 4819272 (1989-04-01), Shimo et al.
patent: 4827421 (1989-05-01), Dondl
patent: 5408237 (1995-04-01), Patterson et al.
patent: 5586165 (1996-12-01), Wiedeman
Application of Ellipsat Corp. to FCC Apr. 1991.

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