Impact of Carrier to Noise Power Density, Platform Dynamics, and IMU Quality on Deeply Integrated Navigation

Matthew Lashley, David M. Bevly and John Y. Hung

Abstract:	In this paper, the authors investigate how the Carrier to Noise power density ratio (C/N0), platform dynamics, and differing Inertial Measurement Unit (IMU) quality affect the performance of Deeply Integrated (DI) algorithms. Two different DI algorithms are described in detail and analyzed using a high fidelity GPS simulator. The first algorithm is a Vector Delay/Frequency Lock Loop (VDFLL). The second algorithm is a Deeply Integrated GPS/INS system with differing grades of IMU's. The ability of the algorithms to operate at low C/N0 levels and in high dynamics is investigated empirically with the GPS simulator. The VDFLL algorithm can successfully track the received GPS signals through 2 g, 4 g, and 8 g coordinated turns at 19 dB-Hz. Initial results of the Deeply Integrated GPS/INS algorithm show its operation through the 2 g, 4 g, and 8 g coordinated turn at 16 dB-Hz with a tactical grade IMU.
Published in:	Proceedings of IEEE/ION PLANS 2008 May 6 - 8, 2008 Hyatt Regency Hotel Monterey, CA
Pages:	9 - 16
Cite this article:	Lashley, Matthew, Bevly, David M., Hung, John Y., "Impact of Carrier to Noise Power Density, Platform Dynamics, and IMU Quality on Deeply Integrated Navigation," Proceedings of IEEE/ION PLANS 2008, Monterey, CA, May 2008, pp. 9-16. https://doi.org/10.1109/PLANS.2008.4569964
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