ALOS PALSAR Calibration and Validation Results from Sweden

Eriksson, Leif,1970Chalmers tekniska högskola,Chalmers University of Technology (author)

In 2006 calibration activities for ALOS PALSAR wereconducted in Sweden. Four five-metre trihedral corner reflectorsand three smaller dihedral reflectors were deployed and operatedduring eight months. 23 PALSAR scenes were acquired over thecalibration site allowing an evaluation of the quality and temporalstability of the data. Results show that the co-polarized datahave been stable during the whole calibration period with variationsin the trihedral responses lower than 0.7 dB. The measuredresolution in azimuth was 4.4 m and in slant range 4.7 m forsingle polarization images and 9.5 m for polarimetric data. Forthe cross-polarized data large variations in the dihedral responseswere found. It is assumed that this is caused by a larger sensitivityto pointing errors. For the polarimetric data, estimation ofFaraday rotation gave values ranging from 0.1º to 3º.

Sandberg, Gustaf,1982Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jansgust (author)
Ulander, Lars,1962Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)larula (author)
Smith Jonforsen, Gary,1972Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)smith2 (author)
Hallberg, Björn,1973Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)e5bjorn (author)
Folkesson, Klas,1976Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)klasf (author)
Fransson, J.E.S. (author)
Magnusson, M. (author)
Olsson, H. (author)
Gustavsson, A. (author)
Flood, B. (author)
Chalmers tekniska högskola (creator_code:org_t)

In:IEEE Geoscience and Remote Sensing Symposium (IGARSS 2007), Barcelona, Spain, July 23-27, 2007DOI: 10.1109/IGARSS.2007.4423115, s. 1589-1592

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