Retrieval of Significant Wave Height and Mean Sea Surface Level Using the GNSS-R Interference Pattern Technique: Results From a Three-Month Field Campaign

Since 1993, when the European Space Agency (ESA) proposed the use of Global Navigation Satellite Systems reflected signals for sea mesoscale altimetry, a wide range of applications have appeared. This paper focuses on the retrieval of significant wave height (SWH) and the mean sea surface level (MSS...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing Vol. 53; no. 6; pp. 3198 - 3209
Main Authors: Alonso-Arroyo, A., Camps, A., Park, H., Pascual, D., Onrubia, R., Martin, F.
Format: Journal Article Publication
Language:English
Published: New York IEEE 01.06.2015
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Institute of Electrical and Electronics Engineers (IEEE)
Subjects:
Altimetry
Enginyeria de la telecomunicació
Global Navigation Satellite Systems Reflectometry (GNSS-R)
Global Positioning System
GNSS (Sistema de navegació)
GPS
Interference
interference pattern technique (IPT)
Multipath
Ocean
Oceanografia
Oceanography
Periodogram
Radiocomunicació i exploració electromagnètica
Rayleigh criterion
Reflection
Reflectometry
Remote sensing
Rough surfaces
Sampled-data
Scattering
Sea mean surface level
Sea surface
Sea wave height
Signals
Spaced data
Spectral analysis
Surface roughness
Surface waves
Teledetecció
Wave height
Àrees temàtiques de la UPC
Global Navigation Satellite Systems Reflectometry (GNSS-R)
Rayleigh criterion
sea mean surface level
interference pattern technique (IPT)
sea wave height
ISSN:0196-2892, 1558-0644
Online Access:Get full text
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Summary:Since 1993, when the European Space Agency (ESA) proposed the use of Global Navigation Satellite Systems reflected signals for sea mesoscale altimetry, a wide range of applications have appeared. This paper focuses on the retrieval of significant wave height (SWH) and the mean sea surface level (MSSL) from a ground-based experiment using the interference pattern technique (IPT). Two different observables on the IPT are analyzed: the oscillation frequency and the angle where coherency is lost. The point where coherency in the reflection process is lost can be related to the Rayleigh criterion for smooth surfaces and helps to determine the SWH. Spectral analysis on the interference pattern helps to determine the MSSL. A three-month field campaign was performed on the "Pont del Petroli" pier, Badalona, Spain, to see how the reflected GNSS signals were affected by coastal sea state and check previous assumptions. Results from this field experiment are shown, confirming that the SWH can be retrieved with accuracy of 6 cm and the MSSL with 4 cm. Estimations of both parameters are obtained every 30 min approximately.
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ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2014.2371540