Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Reexamination Certificate
2009-04-28
2011-11-01
Tarcza, Thomas (Department: 3662)
Telecommunications
Transmitter and receiver at separate stations
Having measuring, testing, or monitoring of system or part
C455S226100, C342S357620
Reexamination Certificate
active
08050630
ABSTRACT:
A method is provided for determining the validity of a signal received by a GPS receiver. A signal that is unfiltered, either mathematically or electronically, is monitored to determine the variability of different occurrences of the signal. These occurrences, which may be sequential, are compared to each other in order to detect whether or not variation exists between one occurrence of the signal and a subsequent occurrence of the signal. If no variation exists, it is determined that the signal is invalid and that a loss of fix of the satellite signal has occurred. If sufficient variability exists in the signal, between successive occurrences, the signal is deemed to be valid and suitable for use to control a vehicle such as a marine vessel.
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Brunswick Corporation
Lanyi William D.
Tarcza Thomas
Vigushin John
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