Title
Polarimetric Response of Rice Fields at C-Band: Analysis and Phenology Retrieval
Abstract
A set of ten RADARSAT-2 images acquired in fully polarimetric mode over a test site with rice fields in Seville, Spain, has been analyzed to extract the main features of the C-band radar backscatter as a function of rice phenology. After observing the evolutions versus phenology of different polarimetric observables and explaining their behavior in terms of scattering mechanisms present in the scene, a simple retrieval approach has been proposed. This algorithm is based on three polarimetric observables and provides estimates from a set of four relevant intervals of phenological stages. The validation against ground data, carried out at parcel level for a set of six stands and up to nine dates per stand, provides a 96% rate of coincidence. Moreover, an equivalent compact-pol retrieval algorithm has been also proposed and validated, providing the same performance at parcel level. In all cases, the inversion is carried out by exploiting a single satellite acquisition, without any other auxiliary information.
Year
DOI
Venue
2014
10.1109/TGRS.2013.2268319
Geoscience and Remote Sensing, IEEE Transactions  
Keywords
Field
DocType
crops,phenology,radar imaging,remote sensing by radar,vegetation mapping,C-band radar backscatter,RADARSAT-2 images,Seville,Spain,auxiliary information,equivalent compact-pol retrieval algorithm,fully polarimetric mode,ground data,parcel level,phenological stages,phenology retrieval approach,polarimetric observables,polarimetric response,rice fields,rice phenology,scattering mechanisms,single satellite acquisition,test site,Agriculture,phenology,polarimetry,rice,synthetic aperture radar (SAR)
Satellite,C band,Radar imaging,Observable,Polarimetry,Inversion (meteorology),Remote sensing,Coincidence,Phenology,Mathematics
Journal
Volume
Issue
ISSN
52
5
0196-2892
Citations 
PageRank 
References 
36
1.59
11
Authors
7