Microwave and optical techniques for forest monitoring : The Black Forest experiment
During the summer 1991, the multisensor campaign MAC-Europe 91 took place over several test sites in Europe. The Institute for Remote Sensing Applications of the JRC selected the Black Forest area in south Germany for the experiment. Intensive ground truth mapping and information provided by the German Forestry Department complemented the remote sensed data sets over the site. The information content of the electromagnetic waves reflected by the vegetation layer is exploited by using a large class of sensors (AVIRIS, TMS, GER II, AIRSAR) operating from the visible to the microwave regions. This paper presents preliminary results achieved by computing classical indices derived from optical (NDVI, MSI, GEMI, Red edge) and radar (backscattered power, polarisation indices) data acquired on the same test site. The radiometrically calibrated optical data were first corrected for atmospheric effects, using an empirical method for the GER II data and the Atmospheric Removal Procedure for the AVIRIS data. The radar images were calibrated and georeferenced. According to literature, these indices are sensitive to a variety of canopy characteristics such as biomass (leafy and woody), water content and tree growth stage (structure, damage). The retrieved indices were correlated with the available ground information on these variables and their performance was assessed for this particular test site.
Bibliographic Reference: Paper presented: Combined Optical-Microwave Earth and Atmosphere Sensing Symposium, Albuquerque (US), March 22-25, 1993
Availability: Available from (1) as Paper EN 37436 ORA
Record Number: 199310643 / Last updated on: 1994-11-29
Original language: en
Available languages: en