Coherency Matrix Estimation of Heterogeneous Clutter in High-Resolution Polarimetric SAR Images Vasile, Gabriel ; Ovarlez, Jean-Philippe ; Pascal, Frederic ; Tison, Céline Abstract Publication: IEEE Transactions on Geoscience and Remote Sensing Pub Date: April 2010 DOI: 10.1109/TGRS.2009.2035496 Bibcode: 2010ITGRS..48.1809V