Method and system for determining height above ground using indirect information

摘要

Techniques and systems are described that allow an air traffic display and/or avionics system of an aircraft to display and/or warn a pilot of aircraft targets for air traffic proximate to the aircraft or to suppress the display of on-ground air traffic targets. In some implementations, an integrated avionics system can use indirect information to determine whether an individual aircraft traffic target is to be presented to a pilot. For example, the integrated avionics system can determine whether an aircraft target is in proximity to the ground based on traffic tracking data corresponding to other aircraft.

主权项

1. A method of furnishing an air traffic display on an ownship aircraft, the method comprising:
receiving Mode C transponder data from a first target aircraft, the received Mode C transponder data including pressure altitude information for the first target aircraft; accessing an elevation database to identify elevation data corresponding to the location of the first target aircraft; determining height above ground for the first target aircraft using the elevation data; and suppressing the display of the first target aircraft on the air traffic display based on the determined height above ground.