Closed-loop pointing system for wireless communication with...

Details Closed-loop pointing system for wireless communication with... Closed-loop pointing system for wireless communication with...

2006-10-31

2006-10-31

Vo, Nguyen T. (Department: 2618)

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

C455S430000

Reexamination Certificate

active

07130578

ABSTRACT:
A wireless communication system includes platforms that generate spot beams and wide-area beams. The system includes a network operations controller that receives signals from user terminals. User terminals determine the signal strengths of the spot beams and the wide-area beams and a ratio may therefore be calculated between the spot beam and the wide-area beams. Based upon the ratio of the spot beam strength and the wide-area beam strength, the network operations controller may adjust the orientation of the platforms relative to the earth to correct for pointing errors and, the network operation controller may compensate as is best possible depending on the type of antenna, a correction for distortion in the antenna.

REFERENCES:
patent: 4599619 (1986-07-01), Keigler et al.
patent: 4630058 (1986-12-01), Brown
patent: 6150977 (2000-11-01), Wilcoxson et al.
patent: 6825806 (2004-11-01), Liu et al.
patent: 2004/0242152 (2004-12-01), Jarett

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