Trusted Inertial Terrain-Aided Navigation (TITAN)

Tucker Haydon, Todd E. Humphreys

Abstract:	The vertical synthetic aperture radar (VSAR) is proposed as a navigation sensor, and a companion navigation algorithm – Trusted Inertial Terrain-Aided Navigation (TITAN) – is introduced. The TITAN algorithm consumes vector range-Doppler measurements produced by a VSAR and correlates them against a local digital terrain elevation map with an extended Kalman filter, enabling accurate navigation without the need for GPS. The navigation accuracy of the VSAR/TITAN combination is quantified with post-processed flight data, and shown to be within 15 meters.
Published in:	Proceedings of the 36th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2023) September 11 - 15, 2023 Hyatt Regency Denver Denver, Colorado
Pages:	2088 - 2108
Cite this article:	Haydon, Tucker, Humphreys, Todd E., "Trusted Inertial Terrain-Aided Navigation (TITAN)," Proceedings of the 36th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2023), Denver, Colorado, September 2023, pp. 2088-2108. https://doi.org/10.33012/2023.19409
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