This type of system can be used to display terrain profile to the pilot to improve situational awareness. Any catalogued man made obstructions can be included in the database. GPS position in conjunction with a terrain database is used to help in prediction of terrain conflict. In case of rapidly rising terrain it may not react quick enough to issue a warning in time EGPWS corrects this problem by integrating an Aircraft navigational source in to the system. Radio altimeter tells the aircraft height with reference to the Terrence/surface below the Aircraft. Old traditional system used radio altimeter for terrain height. Thus Enhanced ground proximity warning system is used to prevent accidents which can be caused by control flight in to the terrain. Proximity Warning system have been developed to provide enhanced situational awareness to the pilots such that CFIT accidents which become can things of past.
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