Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1997-06-17
1998-12-08
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
701213, 701214, H04B 7185, G01S 502
Patent
active
058476792
ABSTRACT:
A GPS based search and rescue system utilizes an airborne interrogation unit for extending the range of a second interrogation unit. The airborne unit relays communication between a survival radio and the second interrogation unit. The second interrogation unit is typically a ground based unit and is arranged to provide GPS correction information to the survival radio. The normal line of sight communication between a survival radio and an interrogation unit is extended to an over the horizon communication path by utilizing the airborne interrogation unit as a relay for communications.
REFERENCES:
patent: 5414432 (1995-05-01), Penny, Jr. et al.
patent: 5506587 (1996-04-01), Lans
patent: 5519403 (1996-05-01), Bickley et al.
Bickley Robert Henry
Brenner Charles Herbert
Keller Theodore Wolley
Moyer Christopher Kent
Yee David Moon
Blum Theodore M.
Botsch Bradley J.
Motorola Inc.
Scott John C.
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