Title :
A new method for a posteriori polarimetric SAR calibration
Author :
Ainsworth, T.L. ; Lee, J.S.
Author_Institution :
Remote Sensing Div., Naval Res. Lab., Washington, DC, USA
Abstract :
Fully polarimetric SAR data analysis has found wide application for terrain classification, land-use, soil moisture and ground cover classification. Critical to all analyses and applications is accurate calibration of the relative amplitudes of and phases between the various polarimetric channels. Here we develop a "minimalist" approach to polarimetric calibration, wherein only the weakest of constraints, reciprocity, is initially imposed upon the data. Additional parameters are self-consistently estimated from the data. In this manner channel imbalances and cross-talk are estimated without unduly biasing the resulting polarimetric information
Keywords :
calibration; geophysical techniques; radar polarimetry; remote sensing by radar; synthetic aperture radar; terrain mapping; a posteriori method; amplitude; calibration; channel imbalance; crosstalk; geophysical measurement technique; ground cover; image classification; land surface; land-use; minimalist approach; phase; polarimetric SAR; radar polarimetry; radar remote sensing; soil moisture; terrain mapping; Calibration; Data analysis; Electronic mail; Laboratories; Matrix converters; Parameter estimation; Polarization; Radar scattering; Remote sensing; Soil moisture;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.976177
