Terrain data retrieval system
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United States of America Patent
Stats
-
Mar 23, 2004
Grant Date -
Aug 22, 2002
app pub date -
Sep 17, 2001
filing date -
Jul 31, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A terrain-awareness system (TAS) provides LOOK-AHEAD/LOOK-DOWN as well as LOOK-UP terrain advisory and warning indications to the pilot of an aircraft of a hazardous flight condition. The TAS includes an airport data base as well as a terrain data base that is structured to provide various resolutions depending on the topography of the particular geographic area of interest. Navigational data from a satellite-based navigational system, such as a global positioning system (GPS), is used to provide a LOOK-AHEAD/LOOK-DOWN and LOOK-UP terrain advisory and terrain warning indications based upon the current position and projected flight path of the aircraft. Since the terrain advisory and the warning signals are a function of the flight path of the aircraft, nuisance warnings are minimized.
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