Deeply Integrated GPS/Low-Cost IMU for Low CNR Signal Processing: Flight Test Results and Real Time Implementation

Andrey Soloviev, Sanjeev Gunawardena and Frank van Graas

Abstract:	A deeply integrated GPS/low-cost IMU system is developed and applied to re-acquire and track GPS signals with low carrier-to-noise ratio (CNR). The system provides continuous carrier phase tracking without requiring the knowledge of navigation data bits. Flight data with a 90-degree turn are applied to demonstrate reacquisition and continuous carrier phase tracking of 15 dB-Hz GPS signals. Real-time re-acquisition of low CNR GPS signals without external aiding is demonstrated using a GPS antenna located inside a steel/concrete building.
Published in:	Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004) September 21 - 24, 2004 Long Beach Convention Center Long Beach, CA
Pages:	1598 - 1608
Cite this article:	Soloviev, Andrey, Gunawardena, Sanjeev, van Graas, Frank, "Deeply Integrated GPS/Low-Cost IMU for Low CNR Signal Processing: Flight Test Results and Real Time Implementation," Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004), Long Beach, CA, September 2004, pp. 1598-1608.
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