Title: Ground-to-Air Tropospheric Mapping Function for Elevation Angles Below Three Degrees
Author(s): Shrivathsan Narayanan, Okuary Osechas and Christoph Günther
Published in: Proceedings of the 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017)
September 25 - 29, 2017
Oregon Convention Center
Portland, Oregon
Pages: 4080 - 4089
Cite this article: Narayanan, Shrivathsan, Osechas, Okuary, Günther, Christoph, "Ground-to-Air Tropospheric Mapping Function for Elevation Angles Below Three Degrees," Proceedings of the 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017), Portland, Oregon, September 2017, pp. 4080-4089.
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Abstract: We propose a new mapping function for ground-to-air radio links. We validated the mapping function using the data from numerical weather model over an entire year, by comparing it with the mapping function estimated with ray-tracing the refractivity profile of the troposphere (i.e. the space traversed by the ground-to-air radio link). Two asymptotic expansions are derived, that model the tropospheric delay for the entire range of elevation angles from zenith down to 0.5?.