Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1994-11-28
1996-06-11
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
455 121, H04B 7185, G01S 502
Patent
active
055259995
ABSTRACT:
A master control station (10) includes a common antenna (12) which drives two, unsynchronized multi-channel GPS receivers (16, 18). The two receivers (16, 18) couple to a controller (24). The controller (24) commands the receivers (16, 18) to identify all GPS satellites in view, and then assigns (48) satellites to various channels in the receivers (16, 18). The assignment includes at least one common satellite between the two receivers. Location data are obtained from the two receivers for the common satellite and used to normalize (66) all pseudorange data from all channels to compensate for the lack of synchronization between the two receivers (16, 18). Differential GPS location resolution (84) may then occur using the normalized data.
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King Thomas M.
Sheard Stephen J.
Blum Theodore M.
Motorola Inc.
Nehr Jeffrey D.
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