Observing Sea/Ice Transition Using Radar Images Generated From TechDemoSat-1 Delay Doppler Maps

In this letter, Global Navigation Satellite System Reflectometry (GNSS-R) delay Doppler maps (DDMs) acquired by the U.K. TechDemoSat-1 (TDS-1) mission are analyzed to identify sea ice infesting waters in circumpolar areas. First, the sensitivity of actual DDM to sea ice is investigated using referen...

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Bibliographic Details
Published in:IEEE Geoscience and Remote Sensing Letters
Main Authors: SCHIAVULLI, DOMENICO, NUNZIATA, FERDINANDO, MIGLIACCIO, Maurizio, Frappart, Frédéric, Ramillien, Guillaume, Darrozes, José
Other Authors: Schiavulli, Domenico, Nunziata, Ferdinando, Migliaccio, Maurizio
Format: Article in Journal/Newspaper
Language:English
Published: 2017
Subjects:
Global Navigation Satellite System Reflectometry (GNSS-R)
inverse problem
sea ice
Geotechnical Engineering and Engineering Geology
Electrical and Electronic Engineering
Sea ice
Online Access:http://hdl.handle.net/11367/59000
https://doi.org/10.1109/LGRS.2017.2676823
http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=8859
Description
Summary:In this letter, Global Navigation Satellite System Reflectometry (GNSS-R) delay Doppler maps (DDMs) acquired by the U.K. TechDemoSat-1 (TDS-1) mission are analyzed to identify sea ice infesting waters in circumpolar areas. First, the sensitivity of actual DDM to sea ice is investigated using reference information provided by a Sentinel-1 synthetic aperture radar imagery and a Special Sensor Microwave/Imager based sea-ice concentration map. Then, a new product is proposed that consists of normalized radar cross section measurements derived from actual DDMs and arranged in gridded format. This product is shown to provide spatial information on the sea ice transition that cannot be obtained exploiting the conventional DDM product. Hence, this new product can be used to improve/complement conventional remote sensing techniques for sea ice observation.

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