Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1993-08-11
1995-08-22
Issing, Gregory C.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
455 541, 379 60, G02S 502, H04B 100, H04M 1100
Patent
active
054444500
ABSTRACT:
A radio telecommunications system includes a number of satellites in low earth orbits. Subscriber units communicate with the satellites. A single subscriber unit communicates with a single satellite using electromagnetic signals so that a measurement processor can obtain Doppler component, propagation duration, and real time measurements of the signals. A location processor converts these measurements into a geographic location with respect to the earth through an iterative process. The location processor determines the accuracy required for each location determination, and performs only the number of iterations needed to meet the accuracy requirements. A service processor determines which qualifications to apply to communication services offered by the system. These qualifications are based on the subscriber unit's location.
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Maine Kristine P.
Olds Keith A.
Gorrie Gregory J.
Handy Robert M.
Issing Gregory C.
Motorola Inc.
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