Articles | Volume 11, issue 1
Research article
29 Jan 2018
Research article |  | 29 Jan 2018

Analysis of reflections in GNSS radio occultation measurements using the phase matching amplitude

Thomas Sievert, Joel Rasch, Anders Carlström, and Mats Ingemar Pettersson

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Cited articles

Beckmann, P. and Spizzichino, A.: The Scattering of Electromagnetic Waves from Rough Surfaces, International Series of Monographs on Electromagnetic Waves, Pergamon Press, 1963.
Benzon, H. H. and Gorbunov, M. E.: Description of a wave propagator and radio occultation simulations, Tech. rep., EUMETSAT, 2012.
Benzon, H. H., Nielsen, A. S., and Olsen, L.: An atmospheric wave optics propagator – theory and application, Scientific report 03-01, Danish Meteorological Institute, 2003.
Beyerle, G., Hocke, K., Wickert, J., Schmidt, T., Marquardt, C., and Reigber, C.: GPS radio occultations with CHAMP: A radio holographic analysis of GPS signal propagation in the troposphere and surface reflections, J. Geophys. Res.-Atmos., 107, ACL 27-1–ACL 27-14,, 2002.
Bloomfield, P.: Fourier analysis of time series: an introduction, John Wiley & Sons, 2004.
Short summary
In this paper we analyze GNSS radio occultation measurement data from the MetOp-A satellite using a particular operator called phase matching. We find that reflected GNSS signals can be distinguished using this method and that there are structures that differ significantly from simulated measurements. Making radio occultation measurements in the lower troposphere is difficult, and the motivation of this study is to investigate different ways of addressing this problem.