Preliminary Results Of The ISM Campaign - The Landes, South West France

Abstract

The ISM instrument is an airborne spectrometer that operates in the near infrared and middle infrared part of the electromagnetic spectrum with 128 spectral channels between 0.8pm and 3.2pm. It has a ut" off-nadir capability with 12' instantaneous field of view. The first ISM campaign led to the survey of The Landes study area, South West France, on June 1991, in combination with AVIRIS and TMS data acquisition during the 1991 NASA/JPL European campaign. The ISM swey was intended to test the capability of this instrument for studying biophysical parameters of local vegetation; i.e. pine forest and agricultural plots, with a special emphasis on the middle infrared region for water content analyses. In-situ reflectance data were derived from the various airborne data, whereas vegetation samples were collected for further laboratory analysis of biophysical parameters such as water content, nitrogen and cellulose content, vegetation structure, ... Geometrically corrected reflectance data are being computed and co-registered with locally avdilable vegetation data base. Preliminary results are presented and discussed.