Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1997-04-10
1998-11-24
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
701213, H04B 7185, G01S 502
Patent
active
058413995
ABSTRACT:
A fault exclusion (FE) system for a global positioning system (GPS) receiver which upon detection of a faulty satellite, for example, by a fault detection (FD) system, such as a receiver autonomous integrity monitoring (RAIM) system. The FE system computes the test statistics for all satellites and ranks the satellites in descending order of their test statistics. The FE system excludes data from the satellites one at a time starting with the satellites at the top of the list. Should a subsequent satellite anomaly be detected, the FE system excludes satellites based on the test statistics computed for the previous satellite anomaly condition. The FE system proceeds down the list until the fault detection condition is cleared or the list is exhausted without affecting the availability of the FD system.
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Allied-Signal Inc.
Blum Theodore M.
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