Linear cell satellite system

Details Linear cell satellite system Linear cell satellite system

1994-11-15

1997-04-15

Issing, Gregory C.

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

Directive

Including a satellite

342358, 455 121, 455 133, H04B 7185, H01Q 300

Patent

active

056214154

ABSTRACT:
Methods for transmitting and receiving radiated energy (15a, 15b, 15c) from and to a satellite (12) which moves with respect to the Earth's surface are disclosed. The invention pertains to any satellite (12) which is not in an equatorial orbit at geosynchronous altitude. The present invention reduces hand-off overhead in systems that utilize satellite-fixed cells, augments frequency re-use, and enhances the communications and sensing capacity of the satellite. In accordance with the methods of the invention, satellite footprints (16a, 16b, 16c) are partitioned into linear spanning cells (18) and multiple linear segments (22). The linear spanning cells (18) resemble long strips that extend across an entire footprint (16a, 16b, 16c). Multiple linear segments (22) are smaller contiguous areas that lie within the linear spanning cells (18). The alignment of the linear spanning cells (18) across a footprint (16a, 16b, 16c) is determined by a correction angle .phi., which compensates for the changing relative motion of the Earth's surface at various latitudes.

REFERENCES:
patent: 5268694 (1993-12-01), Jan et al.
patent: 5422647 (1995-06-01), Hirshfield et al.

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