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)
How to cite:
Reinking, J. Revision of the Atmospheric Modeling for SNR Observations in Ground-Based GNSS Reflectometry. Preprints2020, 2020120564. https://doi.org/10.20944/preprints202012.0564.v2.
Reinking, J. Revision of the Atmospheric Modeling for SNR Observations in Ground-Based GNSS Reflectometry. Preprints 2020, 2020120564. https://doi.org/10.20944/preprints202012.0564.v2.
Cite as:
Reinking, J. Revision of the Atmospheric Modeling for SNR Observations in Ground-Based GNSS Reflectometry. Preprints2020, 2020120564. https://doi.org/10.20944/preprints202012.0564.v2.
Reinking, J. Revision of the Atmospheric Modeling for SNR Observations in Ground-Based GNSS Reflectometry. Preprints 2020, 2020120564. https://doi.org/10.20944/preprints202012.0564.v2.
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
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.
Received:
5 January 2021
Commenter:
Jörg Reinking
Commenter's Conflict of Interests:
Author
Comment:
- An new section on atmospheric interferometric delay for a spherical reflector was introduced. - New delay formula was used in the numerical example as well. - Small adaptation of different parts of the contribution due to this introduction were made. - Some typos were corrected
Commenter: Jörg Reinking
Commenter's Conflict of Interests: Author
- New delay formula was used in the numerical example as well.
- Small adaptation of different parts of the contribution due to this introduction were made.
- Some typos were corrected