CORRECTION OF ATMOSPHERIC EFFECTS OF SATELLITE REMOTE-SENSING DATA (LANDSAT MSS-NOAA AVHRR) FOR SURFACE CANOPY INVESTIGATIONS

A new correction method for atmospheric effects in Landsat-MSS and NOA A AVHRR data is presented which uses only the remotely-sensed multispe ctral data. The method is based on a new quasi-single-variable radiati ve transfer model, and as a first step we assumed that the surface is covered by vegetation. For Landsat-MSS data the method was developed f or the tasselled cap indices using known empirical relationships among them. For NOAA AVHRR data 'tasselled cap-like' indices and the averag e reflectance of the average canopy in the visible band known from Lan dsat-MSS data were used. The method was used in yield forecasting proj ect in north-eastern part of Hungary and provided a significant enhanc ement in the quality of remotely sensed data.