Volpe National Transportation Systems Center

 

Volpe Journal Spring 98

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Notifying Airplane Pilots of Navigational System Outages
Locations and time intervals when RAIM is not available during a 12-hour period

Fig. 2. Locations and time intervals when RAIM is not available during a 12-hour period. Although the locations of the outages is fixed, the times when they occur is 4 minutes earlier each day.

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