Position Determining Method and System Using Surveillance Ground Stations
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United States of America Patent
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Issued Date -
May 7, 2015
app pub date -
Jan 6, 2015
filing date -
May 27, 2011
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Abstract
An aircraft avionics system and method for automatically determining an aircraft position. The system and method determine distances to UAT or SSR ground stations. The system and method then determine the position of an aircraft by determining true bearings to SSR or UAT ground stations and determining the possible positions for the aircraft at which the aircraft is at respective bearings to each SSR or UAT ground station. An alternative system and method may determine distances based on timing signals in transmissions from the ground stations and determine one or more possible positions for the aircraft at which the aircraft is at the determined distances from respective ground stations. The system and method also may use dead reckoning or VOR or ADF signals to reduce the possible positions for the aircraft to a single possible position.
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