Evaluating Navigation Augmentation with LTE in the Urban Signal Environment

Andrew Brevick, Kirsten Strandjord, Pai Wang

Abstract:	Tall buildings that block, reflect, or diffract signals challenge GPS positioning in urban environments, resulting in positioning errors. This paper explores the use of communication signals, such as long-term evolution (LTE) signals, as signals of opportunity (SOP) leveraged to aid navigation performance. Data collected during a driving experiment in the urban center of Denver, Colorado is processed using a carrier phase tracking architecture, which provides accumulated Doppler ranging (ADR) measurements. This data is applied to the problem of characterizing LTE small cell transmitter clock and position states, a critical first step in use for navigation. Batch LLS phase profile comparisons and shadow matching techniques are used, and their combined application matches LTE transmitter locations to candidates in a known database.
Published in:	Proceedings of the 2023 International Technical Meeting of The Institute of Navigation January 24 - 26, 2023 Hyatt Regency Long Beach Long Beach, California
Pages:	1154 - 1168
Cite this article:	Brevick, Andrew, Strandjord, Kirsten, Wang, Pai, "Evaluating Navigation Augmentation with LTE in the Urban Signal Environment," Proceedings of the 2023 International Technical Meeting of The Institute of Navigation, Long Beach, California, January 2023, pp. 1154-1168. https://doi.org/10.33012/2023.18644
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