Identification of ship state tonal parameters for use in relative GPS shipboard landing systems
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United States of America Patent
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Jul 9, 2013
Grant Date -
Oct 18, 2012
app pub date -
Apr 12, 2011
filing date -
Apr 12, 2011
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Abstract
A method and system for identification of ship state tonal parameters during an approach and landing of an aircraft on a ship is provided. The method comprises determining whether ship state data is available to the aircraft prior to landing of the aircraft, and when the ship state data is available to the aircraft, receiving the ship state data at the aircraft and estimating tonal parameters of the ship state data. When the ship state data is not available to the aircraft, a determination is made whether a ship tonal parameter estimation is complete. When the ship tonal parameter estimation is complete, ship state data is estimated using any last received ship state data and estimates of the ship tonal parameters. One or more relative navigation algorithms are then run using the received ship state data or the estimated ship state data to safely land the aircraft on the ship.
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