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Mapping of wind-thrown forests using satellite SAR images

J.E.S. Fransson ; Andreas Pantze ; Leif E.B. Eriksson (Institutionen för rymd- och geovetenskap, Radarfjärranalys) ; Maciej J. Soja (Institutionen för rymd- och geovetenskap, Radarfjärranalys) ; M. Santoro
Proceedings of IGARSS 2010 Symposium, Remote Sensing: Global Vision for Local Action, Honolulu, Hawaii, USA, 25-30 July, 2010 p. 1242-1245. (2010)
[Konferensbidrag, övrigt]

The study focuses on investigation and evaluation of wind- thrown forest mapping using satellite remotely sensed data from three synthetic aperture radar (SAR) sensors. The study is carried out at Remningstorp, a test site in the south of Sweden dominated by coniferous forest, where trees were manual felled to simulate wind-thrown forest. The satellite data consisted of time series of HH polarized SAR images acquired by the Advanced Land Observing Satellite (ALOS) Phased Array type L-band Synthetic Aperture Radar (PALSAR), Radarsat-2 (C-band) and TerraSAR-X (X- band). The results from visual interpretation of SAR images acquired before and after the simulated wind-throw together with corresponding ratio images show that ALOS PALSAR HH polarized intensity images are not able to detect wind- thrown forest, probably due to too coarse spatial resolution. In contrast, the wind-thrown forest is clearly visible in the Radarsat-2 and TerraSAR-X HH polarized images, implying that it may be possible to develop a new application using these SAR data for mapping of wind-thrown forests.

Nyckelord: Synthetic aperture radar, forest, change detection, storm damage

Denna post skapades 2010-12-21. Senast ändrad 2014-10-09.
CPL Pubid: 131587


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