AHAS
AVHRR Hydrological Analysis System
AHAS is a raster-based system devoted to deriving products from 1.1 km NOAA-AVHRR imagery, with an emphasis on hydrological applications and production agriculture. It compiles recent and generalised energy-related methods in an expert system-guided user interface, triggering operations from a GIS/remote sensing system (ILWIS 3.11) working in the background.