Summary
International Symposium on Antennas and Propagation
2012
Session Number:POS1
Session:
Number:POS1-33
Time Series SAR Polarimetric Analysis of Rice Crop Based on Four-component Scattering Decomposition
Tzu-Yu Cheng,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
A four-component scattering decomposition (Y4R) based on the coherency matrix is applied to analyze the polarimetric response of rice crop growth. A multi-temporal Radarsat-2 Quad-Pol SAR dataset from March to August, 2009 over western Taiwan was collected. Compared to other decomposition schemes such as lexicographic covariance matrix approach and Pauli-based covariance matrix, the four-component decomposition offers excellent performance to identify the crop growth stages in terms of polarimetric scattering responses from transplanting to harvesting. Results indicate that Y4R provides excellent features for change detection based on constant false alarm rate (CFAR) scheme.