Field Results of a GPS/INS-Based Approach to Measuring Ship Flexure Onboard an Aircraft Carrier

M.G. Petovello, K. O'Keefe, G. Lachapelle and M.E. Cannon

Abstract:	The Shipboard Relative GPS (SRGPS) component of the US Department of Defense Joint Precision Approach and Landing System (JPALS) aims to deliver automatic landing capabilities to inbound aircraft aboard aircraft carriers. To accomplish this, GPS data collected on the yardarm needs to be translated to the desired touchdown point (TDP) on the flight deck. This in turn requires that all relative motion between the yardarm and the TDP (ship flexure) be properly accounted for, either via direct compensation or in the accuracy and integrity allocations. Since the magnitude of ship flexure at sea has not yet been quantified a data collection campaign was organized to, in part, allow for a direct assessment thereof. The results of this data collection campaign are presented herein and indicates that ship flexure is on the order of a few centimeters in horizontal and vertical components.
Published in:	Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005) September 13 - 16, 2005 Long Beach Convention Center Long Beach, CA
Pages:	2039 - 2048
Cite this article:	Petovello, M.G., O'Keefe, K., Lachapelle, G., Cannon, M.E., "Field Results of a GPS/INS-Based Approach to Measuring Ship Flexure Onboard an Aircraft Carrier," Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005), Long Beach, CA, September 2005, pp. 2039-2048.
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