GPS m-code receiver tracking system

Details GPS m-code receiver tracking system GPS m-code receiver tracking system

2011-03-01

2011-03-01

Ghayour, Mohammad H (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S136000, C375S137000, C375S147000, C375S148000, C375S149000, C375S151000, C375S152000, C375S316000, C375S324000, C375S325000, C375S326000, C375S343000

Reexamination Certificate

active

07899109

ABSTRACT:
An m-code GPS receiver receives m-code GPS communication signals having a multimodal autocorrelation, using an m-code mode identifier unambiguously determining a mode value of one of the m-code modal peaks coherently aligned to a coherent unimodal detected envelope, based on sequential probability estimation in an m-code envelope tracking filter using filter residual estimation or with a coherent m-code and c/a-code tracking filter also based on filter residual estimation, for generating m-code phase errors, for unambiguous and precise m-code code phase tracking in closed feedback loops, for preferred use in navigation systems.

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