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ALOS PALSAR Calibration and Validation Results from Sweden

Leif E.B. Eriksson (Institutionen för radio- och rymdvetenskap, Radarfjärranalys) ; Gustaf Sandberg (Institutionen för radio- och rymdvetenskap, Radarfjärranalys) ; Lars M. H. Ulander (Institutionen för radio- och rymdvetenskap, Radarfjärranalys) ; Gary Smith-Jonforsen (Institutionen för radio- och rymdvetenskap, Radarfjärranalys) ; Björn Hallberg (Institutionen för radio- och rymdvetenskap, Radarfjärranalys) ; Klas Folkesson (Institutionen för radio- och rymdvetenskap, Radarfjärranalys) ; J.E.S. Fransson ; M. Magnusson ; H. Olsson ; A. Gustavsson ; B. Flood
IEEE Geoscience and Remote Sensing Symposium (IGARSS 2007), Barcelona, Spain, July 23-27, 2007 Vol. DOI: 10.1109/IGARSS.2007.4423115 (2007), p. 1589-1592.
[Konferensbidrag, övrigt]

In 2006 calibration activities for ALOS PALSAR were conducted in Sweden. Four five-metre trihedral corner reflectors and three smaller dihedral reflectors were deployed and operated during eight months. 23 PALSAR scenes were acquired over the calibration site allowing an evaluation of the quality and temporal stability of the data. Results show that the co-polarized data have been stable during the whole calibration period with variations in the trihedral responses lower than 0.7 dB. The measured resolution in azimuth was 4.4 m and in slant range 4.7 m for single polarization images and 9.5 m for polarimetric data. For the cross-polarized data large variations in the dihedral responses were found. It is assumed that this is caused by a larger sensitivity to pointing errors. For the polarimetric data, estimation of Faraday rotation gave values ranging from 0.1º to 3º.

Nyckelord: corner reflectors, crosstalk, Faraday rotation



Denna post skapades 2008-01-09. Senast ändrad 2016-05-24.
CPL Pubid: 65291

 

Institutioner (Chalmers)

Institutionen för radio- och rymdvetenskap, Radarfjärranalys (2005-2010)

Ämnesområden

Övrig elektroteknik, elektronik och fotonik
Rymd- och flygteknik

Chalmers infrastruktur