Limits on GNSS Performance at High Latitudes

Peter F. Swaszek, Richard J. Hartnett, Kelly C. Seals, Joseph D. Siciliano, Rebecca M. A. Swaszek

Peer Reviewed

Abstract:	As climate change will likely lead to more of a human presence in the higher latitudes, it is important to consider how well our safety-critical positioning systems work near the poles. The orbits of the GPS (and other GNSS) preclude satellites with high elevation in these regions; hence, it is clear that at least vertical accuracy is impacted. This paper characterizes this positioning performance loss by developing lower bounds on GDOP as a function of receiver latitude. Examples with actual ephemeris data are included for comparison to the bounds.
Published in:	Proceedings of the 2018 International Technical Meeting of The Institute of Navigation January 29 - 1, 2018 Hyatt Regency Reston Reston, Virginia
Pages:	160 - 176
Cite this article:	Swaszek, Peter F., Hartnett, Richard J., Seals, Kelly C., Siciliano, Joseph D., Swaszek, Rebecca M. A., "Limits on GNSS Performance at High Latitudes," Proceedings of the 2018 International Technical Meeting of The Institute of Navigation, Reston, Virginia, January 2018, pp. 160-176. https://doi.org/10.33012/2018.15549
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