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.

AHAS is an application built on top of ILWIS. To run AHAS, you therefore must have installed a version of ILWIS 3.*.
For more information, see 52North - ILWIS.

AHAS documentation

AHAS - User Manual - Version 1.3 (PDF document, 1.6 MB)
AHAS - Algorithms and theory - Version 1.3 (PDF document, 3.0 MB)

AHAS installation

Download file AHAS.zip (17.3 MB), and uncompress it in a temporal folder.

Run the setup.exe program. The install program will setup AHAS program on your Windows PC.

After the installation, a file named AHAS.ini is installed in your Windows directory, where paths for running ILWIS and AHAS.exe are defined. By default the application will be installed in c:\program files\ahas.

Hardware and software requirements

Recommended

• Excel-97 spreadsheet
• Internet connection
• ILWIS software installed

More information

For a summary of AHAS input, output, capabilities, screenshots and conditions for use, please visit http://www.parodi.nl/software.htm

For a general description of AHAS, see also ITC News 2002-3; the link AHAS released loads ITC News 2002-3 (PDF 797 Kb) and then redirects to the requested article.

You may furthermore contact:

• Ir. Gabriel N. Parodi, email: parodi@itc.nl or
• Mrs. Lichun Wang, email: lichun@itc.nl