Title :
The negative alpha filter: a new Processing technique for polarimetric SAR interferometry
Author :
Cloude, Shane R. ; Williams, Mark L.
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Adelaide, SA, Australia
fDate :
4/1/2005 12:00:00 AM
Abstract :
In this letter we develop a new concept, the negative alpha filter, which we suggest has application for quantitative estimation of surface parameters beneath vegetation using polarimetric synthetic aperture radar (SAR) interferometry (POLInSAR). We first derive the filter and then validate it using simulations of L-band coherent forest scattering. We then show initial results of applying the filter to airborne data from the German Aerospace Center´s E-SAR L-band sensor.
Keywords :
geophysical signal processing; radar polarimetry; radiowave interferometry; remote sensing by radar; synthetic aperture radar; vegetation mapping; E-SAR L-band sensor; German Aerospace Center; L-band coherent forest scattering; POLInSAR; negative alpha filter; polarimetric SAR interferometry; radar polarimetry; radar remote sensing; surface parameters estimation; synthetic aperture radar; vegetation; Coherence; Entropy; Filters; Interferometry; L-band; Parameter estimation; Polarization; Radar scattering; Synthetic aperture radar; Vegetation mapping; Polarimetric synthetic aperture radar interferometry (POLInSAR); radar polarimetry; radar remote sensing; synthetic aperture radar (SAR);
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
DOI :
10.1109/LGRS.2005.846006
