Paper Info
Title
MICROWAVE SCATTERING PROFILES OF A RICE SAMPLE BY MEANS OF POLARIZATION COHERENCE TOMOGRAPHY
Abstract
In this work we have applied the polarization coherence to- mography (PCT) to indoor data acquired on a rice sample. Different baselines, frequency bands and polarimetric chan- nels have been used in order to analyze the potential of this technique for retrieving information about the vertical struc- ture of such a specific crop and, additionally, these obser- vations have been also used for studying the validity of the RVoG and OVoG models. Results obtained show that the PCT profiles exhibit no dependence on polarization, which is in agreement with the clustering effect observed on PolInSAR observables, i.e. coherences for different polarimetric chan- nels are located very close one to another. In the dual-baseline case, the best profile reconstruction is obtained for the high- est baseline ratio available (0.25◦ and 1◦ baselines) when the condition number of the inversion problem is improved by filtering out the fifth coefficient of the Legendre-Fourier ex- pansion. Differences on the reconstructed profiles between linear and Pauli basis are negligible. The application of the triple- and four-baseline approaches without filtering out the last terms of the expansion leads to unstable results, whereas the filtered cases reveal that the contribution of a fourth base- line is null.
Year
DOI
Venue
2008
10.1109/IGARSS.2008.4779407
IGARSS
Keywords
Field
DocType
tomography,agriculture,index terms— polarimetric sar interferometry,vegeta- tion,indoor experiments.,indexing terms,filtering,synthetic aperture radar,polarization,coherence,polynomials,image reconstruction,meteorology,vegetation,condition number,inverse problem,scattering,crops
Iterative reconstruction,Condition number,Polarimetry,Computer science,Remote sensing,Optics,Polarization (waves),Filter (signal processing),Tomography,Coherence (physics),Scattering
Conference
Citations 
PageRank 
References 
2
0.43
4
Authors
3
Name
Order
Citations
PageRank
Maria-Jose Sanjuan120.76
Juan M. Lopez-Sanchez230330.87
J. David Ballester-Berman318019.10