Premature descent into terrain visual awareness enhancement to EGPWS
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United States of America Patent
Stats
-
Sep 18, 2001
Issued Date -
N/A
app pub date -
Jun 23, 1998
filing date -
Jul 31, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In order to provide the pilots with a display or a map of the terrain below the aircraft, a display is generated on a cockpit display, such as a weather radar, of the contours of the terrain below the aircraft. The terrain contour display is generated from aircraft position information, a terrain data base, and a terrain awareness envelope defined by awareness boundaries. Terrain contours are depicted with the highest terrain within the envelope colored red, high intermediate terrain contours in yellow with varying dot densities, low intermediate terrain contours in green with varying dot densities, and the lowest terrain in black. The green contours can be overwritten with a low density yellow based on a pre-caution envelope which extends certain of the awareness boundaries to provide notice to a pilot of upcoming cautions.
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