TY - GEN
T1 - Polarimetric calibration using distributed odd-bounce targets
AU - Chen, Jiong
AU - Sato, Motoyuki
AU - Yang, Jian
PY - 2011/11/16
Y1 - 2011/11/16
N2 - The un-correlation assumption between like- and cross-polarizations as well as the standard trihedral target is widely used in many calibration methods. However, it is inconvenient to deploy standard calibrators in any scene, and the utilization of un-correlation assumption should also be carefully examined. In this study, we propose a practical polarimetric calibration method which uses neither the standard trihedral nor the assumption that like- and cross-polarizations are uncorrelated. Alternatively, the statistical property of odd-bounce target is extracted to substitute the standard trihedral. By applying the proposed method on the ALOS/PALSAR uncalibrated data, it is shown that the polarization signature of the trihedral reflector agrees excellently with the theoretical value. Comparing to the standard ALOS/PALSAR calibration result, the nonreciprocal effect including the Faraday rotation has been removed by the proposed method.
AB - The un-correlation assumption between like- and cross-polarizations as well as the standard trihedral target is widely used in many calibration methods. However, it is inconvenient to deploy standard calibrators in any scene, and the utilization of un-correlation assumption should also be carefully examined. In this study, we propose a practical polarimetric calibration method which uses neither the standard trihedral nor the assumption that like- and cross-polarizations are uncorrelated. Alternatively, the statistical property of odd-bounce target is extracted to substitute the standard trihedral. By applying the proposed method on the ALOS/PALSAR uncalibrated data, it is shown that the polarization signature of the trihedral reflector agrees excellently with the theoretical value. Comparing to the standard ALOS/PALSAR calibration result, the nonreciprocal effect including the Faraday rotation has been removed by the proposed method.
KW - Phased-Array-Type L-Band Synthetic Aperture Radar (PALSAR)
KW - distortion matrix
KW - odd-bounce target
KW - polarimetric calibration
UR - http://www.scopus.com/inward/record.url?scp=80955150970&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80955150970&partnerID=8YFLogxK
U2 - 10.1109/IGARSS.2011.6049383
DO - 10.1109/IGARSS.2011.6049383
M3 - Conference contribution
AN - SCOPUS:80955150970
SN - 9781457710056
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 1079
EP - 1082
BT - 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011 - Proceedings
T2 - 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011
Y2 - 24 July 2011 through 29 July 2011
ER -