TY - GEN
T1 - Agricultural field observation by space and airborne polarimetric L-band SAR data
AU - Yonezawa, Chinatsu
AU - Watanabe, Manabu
PY - 2015/11/10
Y1 - 2015/11/10
N2 - Full polarimetric space- and air-borne L-band SAR data acquired on the same day were analyzed. The target areas were agricultural fields, including paddy in the maturation stage, that were severely damaged by a tsunami three years earlier. Lodging of paddy was found in some fields. Three-and four-component decomposition and eigenvalue-eigenvector decomposition analysis were performed. On paddy fields, the dominant component was double-bounce scattering. Paddy fields including lodged paddy showed larger volume scattering ratio than paddy fields without lodged paddy in Pi-SAR-L2 data. On soybean, weed, and bare-soil fields, surface scattering was dominant in a four-component decomposition. Paddy field and other fields were separated by a threshold of alpha angle in the eigenvalue-eigenvector decomposition. Subtle differences were found although PALSAR-2 and Pi-SAR-L2 data behaved almost similarly. L-band SAR is suitable for rice field extraction during this season.
AB - Full polarimetric space- and air-borne L-band SAR data acquired on the same day were analyzed. The target areas were agricultural fields, including paddy in the maturation stage, that were severely damaged by a tsunami three years earlier. Lodging of paddy was found in some fields. Three-and four-component decomposition and eigenvalue-eigenvector decomposition analysis were performed. On paddy fields, the dominant component was double-bounce scattering. Paddy fields including lodged paddy showed larger volume scattering ratio than paddy fields without lodged paddy in Pi-SAR-L2 data. On soybean, weed, and bare-soil fields, surface scattering was dominant in a four-component decomposition. Paddy field and other fields were separated by a threshold of alpha angle in the eigenvalue-eigenvector decomposition. Subtle differences were found although PALSAR-2 and Pi-SAR-L2 data behaved almost similarly. L-band SAR is suitable for rice field extraction during this season.
KW - ALOS-2/PALSAR-2
KW - Pi-SAR-L2
KW - full polarimetry
KW - paddy field
KW - tsunami recovery
UR - http://www.scopus.com/inward/record.url?scp=84962487699&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84962487699&partnerID=8YFLogxK
U2 - 10.1109/IGARSS.2015.7326698
DO - 10.1109/IGARSS.2015.7326698
M3 - Conference contribution
AN - SCOPUS:84962487699
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 3985
EP - 3988
BT - 2015 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015
Y2 - 26 July 2015 through 31 July 2015
ER -