MEASUREMENT OF SPECTRAL SIGNATURE IN LESS FAVOURED AREAS (LFA) - A CONTRIBUTION TO THE DEFINITION OF A REMOTE SENSING MULTITEMPORAL EXPERIMENT
The basic concept of passive Remote Sensing in VIS and NIR concerns analysis of the spectral information content of the reflected radiation from different surfaces. A radiometric study of airborne and satellite MSS is therefore of interest for any remote sensing approach. Soil coverages and cultivations of relevant economic value for Ardeche, a typical French less favoured area have been selected. A Thematic Mapper (T.M.) compatible radiometer has been employed for spectral signature measurement on the field and for data from 500 m altitude over the same cultivations. TM satellite data are also available over the Ardeche district. The paper describes the techniques employed and gives an analysis of the available data; a preliminary discrimination, in the LFA landscape, of areas with natural covers emerges from the structure of the radiometric data; it proves difficult to compare ground data with space data due to the heterogeneity of the spatial element; most of TM satellite data over agricultural areas come from mixed pixels. The analysis of multilevel data contributes to the understanding of the averaging effect; it gives an interpretative key, and shows the limits of reliable classification based on spectral signatures. Sets of data are available for the ends of May to September.
Bibliographic Reference: ESA/EARSEL SYMPOSIUM ON EUROPE FROM SPACE, LYNGBY (DENMARK), JUNE 25-28, 1986 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 32755 ORA
Availability: Can be ordered online
Record Number: 1989125002900 / Last updated on: 1987-01-01
Available languages: en