Title :
Detecting seasonal change of deciduous trees using ALOS PALSAR and airborne lidar
Author :
Kato, Akira ; Watanabe, Manabu ; Yamaguchi, Yoshio ; Kobayashi, Takehiko
Author_Institution :
Grad. Sch. of Horticulture, Chiba Univ., Matsudo, Japan
Abstract :
High resolution active remote sensing data are getting more accessible. ALOS PALSAR radar data can provide 10 to 30 m resolution data. With those resolutions, land use changes can be detected and monitored well. The land use map of multi-temporal data is made by radar images, but seasonal change caused by deciduousness should be separately identified from the human activities. In this study, airborne lidar is used as ground truth data to estimate canopy volume and the estimated volume is compared with the change on the backscattering coefficients of multi-temporal radar images. The process used in this study is useful to monitor the small change detection with high resolution radar data given by ALOS 2 satellite launch near the future.
Keywords :
remote sensing by radar; vegetation; vegetation mapping; ALOS 2 satellite; ALOS PALSAR radar data; airborne lidar; backscattering coefficients; canopy volume; decisuous trees; ground truth data; high resolution active remote sensing data; high resolution radar data; human activities; land use changes; land use map; multitemporal data; multitemporal radar images; seasonal change; Backscatter; Laser radar; Radar imaging; Radar remote sensing; Spaceborne radar; Vegetation; biomass; change detection; forest; lidar; radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6351209
