ALOS PALSAR Calibration and Validation Results from Sweden
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2007

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.

corner reflectors

Faraday rotation

crosstalk

Författare

Leif Eriksson

Chalmers, Institutionen för radio- och rymdvetenskap, Radarfjärranalys

Gustaf Sandberg

Chalmers, Institutionen för radio- och rymdvetenskap, Radarfjärranalys

Lars Ulander

Chalmers, Institutionen för radio- och rymdvetenskap, Radarfjärranalys

Gary Smith Jonforsen

Chalmers, Institutionen för radio- och rymdvetenskap, Radarfjärranalys

Björn Hallberg

Chalmers, Institutionen för radio- och rymdvetenskap, Radarfjärranalys

Klas Folkesson

Chalmers, 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 1589-1592

Ämneskategorier

Rymd- och flygteknik

Annan elektroteknik och elektronik