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Remote Sens. 2017, 9(8), 792; https://doi.org/10.3390/rs9080792

Sea State Observation through a Three-Antenna Hybrid XT/AT InSAR Configuration: A Preliminary Study Based on the InSAeS4 Airborne System

1
Istituto per il Rilevamento Elettromagnetico dell’Ambiente (IREA)—Consiglio Nazionale delle Ricerche (CNR), 80124 Napoli, Italy
2
Dipartimento di Ingegneria (DI), Università degli Studi di Napoli “Parthenope”, 80143 Napoli, Italy
*
Author to whom correspondence should be addressed.
Academic Editors: Francesco Soldovieri, Raffaele Persico, Xiaofeng Li, Alexander Braun, Deepak R. Mishra and Prasad S. Thenkabail
Received: 28 April 2017 / Revised: 30 June 2017 / Accepted: 28 July 2017 / Published: 1 August 2017
(This article belongs to the Special Issue Radar Systems for the Societal Challenges)
Full-Text   |   PDF [17589 KB, uploaded 1 August 2017]   |  

Abstract

In this work, we investigate the sea surface monitoring capabilities of a Synthetic Aperture Radar (SAR) system equipped with a three-antenna hybrid Across Track (XT)/Along Track (AT) inteferometric configuration. To do this, we focus on the X-Band airborne InSAeS4 SAR system. Moreover, we propose a simple but effective methodology that allows simultaneous retrieval of the sea surface height and velocity by means of a straightforward, easy-to-implement, linear inversion procedure, which is very general and can be implemented with any system equipped with a three-antenna hybrid XT/AT Interferometric SAR (InSAR) configuration. In our case, we present an experiment carried out in January 2013 in South Italy over the coastline stretch of the Campania region including the Volturno River outlet. In this regard, we highlight that in situ measurements of the retrieved sea surface height and velocity at the time of the airborne mission are unfortunately not available. Notwithstanding, the obtained results show some interesting evidence that the estimated quantities are physically sound. This, on the one side, provides a preliminary validation of the effectiveness of the overall presented methodology and, on the other side, highlights the potentialities of the three-antenna hybrid XT/AT InSAR configuration of the InSAeS4 system for sea state monitoring. View Full-Text
Keywords: Synthetic Aperture Radar (SAR); airborne SAR; airborne SAR Interferometry (InSAR); Along Track SAR Interferometry; Across Track SAR Interferometry Synthetic Aperture Radar (SAR); airborne SAR; airborne SAR Interferometry (InSAR); Along Track SAR Interferometry; Across Track SAR Interferometry
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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. (CC BY 4.0).
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Natale, A.; Jackson, G.; Esposito, C.; Fornaro, G.; Lanari, R.; Perna, S. Sea State Observation through a Three-Antenna Hybrid XT/AT InSAR Configuration: A Preliminary Study Based on the InSAeS4 Airborne System. Remote Sens. 2017, 9, 792.

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