Article
Version 3
This version is not peer-reviewed
Revision of the Atmospheric Modeling for SNR Observations in Ground-Based GNSS Reflectometry
Version 1
: Received: 21 December 2020 / Approved: 22 December 2020 / Online: 22 December 2020 (12:58:17 CET)
Version 2 : Received: 31 December 2020 / Approved: 5 January 2021 / Online: 5 January 2021 (11:48:17 CET)
Version 3 : Received: 15 June 2021 / Approved: 16 June 2021 / Online: 16 June 2021 (08:50:03 CEST)
Version 2 : Received: 31 December 2020 / Approved: 5 January 2021 / Online: 5 January 2021 (11:48:17 CET)
Version 3 : Received: 15 June 2021 / Approved: 16 June 2021 / Online: 16 June 2021 (08:50:03 CEST)
How to cite: Reinking, J. Revision of the Atmospheric Modeling for SNR Observations in Ground-Based GNSS Reflectometry. Preprints 2020, 2020120564 Reinking, J. Revision of the Atmospheric Modeling for SNR Observations in Ground-Based GNSS Reflectometry. Preprints 2020, 2020120564
Abstract
The application of signal-to-noise ratio (SNR) observations from ground-based GNSS Reflectometry is becoming an operational tool for coastal sea-level altimetry. As in all data analyses, systematic influences must be reduced here too, to achieve reliable results. A prominent influence results from atmospheric refraction. Different approaches exist to describe or to correct for this influence. In our contribution we will revise the latest developments and suggest a simple atmospheric interferometric delay model that takes into account ray bending as well as along-path propagation delay. The model takes into account a spherical reflector and can therefore be applied for data from very low elevation angles, too. The findings are double-checked by numerical experiments based on a step-by-step raytracing procedure.
Keywords
GNSS; reflectometry; SNR; atmospheric refraction
Subject
Computer Science and Mathematics, Computer Science
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Commenter: Jörg Reinking
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