Helicopter-borne measurements of radar backscatter from forests
- 1 July 1990
- journal article
- research article
- Published by Taylor & Francis in International Journal of Remote Sensing
- Vol. 11 (7) , 1179-1191
- https://doi.org/10.1080/01431169008955087
Abstract
Helicopter-borne scatterometer measurements of various forest and surface types were conducted in spring 1988 in Espoo, near Helsinki. The scatterometer operates at 5-4 and 98 GHz and employs four linear polarizations (VV, HH, VH and HV). At each of the eight channels the radar can measure the backscattering properties of a target with a range resolution of 1 metre. The experimental results indicate that the location of backscattering sources within the forest canopy varies substantially with tree species. By applying principal-component analysis to the radar return versus range spectrum, identification of tree species is shown to be possible.Keywords
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