Method and apparatus for efficient acquisition and tracking of s

Details Method and apparatus for efficient acquisition and tracking of s Method and apparatus for efficient acquisition and tracking of s

1998-06-03

2000-06-20

Tarcza, Thomas H.

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

Directive

Including antenna orientation

34235706, 34235715, H01Q 300

Patent

active

060782862

ABSTRACT:
A method and apparatus for efficiently tracking satellites includes a geosynchronous satellite (10) for transmitting the ephemeris of non-geosynchronous satellites (20, 30) to a ground terminal (50). The ephemeris is computed by the non-geosynchronous satellites (20, 30) or by other means such as a ground station (60). A ground terminal (50) can quickly acquire a non-geosynchronous satellite (20, 30) by receiving fresh ephemeris data from a geosynchronous satellite (10), determining a location of a non-geosynchronous satellite (20, 30), and orienting an antenna.

REFERENCES:
patent: 5187805 (1993-02-01), Bertiger et al.
patent: 5621646 (1997-04-01), Enge et al.
patent: 5999125 (1999-12-01), Kurby

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