Rapid Inflight/Transfer Alignment Filter for GPS/INS/DVS Navigation System

Min-I James Chang

Abstract:	A rapid azimuth alignment combining a Global Position System (GPS) receiver, an inertial navigation system(INS) and a Doppler Velocity Sensor(DVS) is proposed. The proposed alignment technique can be applied to transfer alignment and inflight alignment. A Kalman filter is designed to ensure that the azimuth channel is completely observable. The advantages of the proposed alignment technique are 1) the filter does not require a vehicle making horizontal maneuvering or S turn for the estimate of azimuth tilt, 2) the azimuth pointing error can be removed continuously during flight, 3) the rapid alignment capability, and 4) an aircraft does not require to make S turn before launch a missile. The azimuth alignment time for I milli-radian accuracy is less than 8 seconds after GPS/DVS measurements become available.
Published in:	Proceedings of the 1997 National Technical Meeting of The Institute of Navigation January 14 - 16, 1997 Loews Santa Monica Hotel Santa Monica, CA
Pages:	965 - 969
Cite this article:	Chang, Min-I James, "Rapid Inflight/Transfer Alignment Filter for GPS/INS/DVS Navigation System," Proceedings of the 1997 National Technical Meeting of The Institute of Navigation, Santa Monica, CA, January 1997, pp. 965-969.
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