CAPS is initially designed to implement
standard processing algorithms for Advanced Very High Resolution Radiometer (AVHRR) data from the NOAA TIROS N series polar orbiting satellites. CAPS is
being developed to work as an extension to Tcl/Tk and
will use HDF as the primary file format. Tcl is an
embeddable scripting language which will run under a number of environments
including Unix, Windows 95 and Windows NT. Tk is a GUI scripting language which is
platform independent. The use of Tcl/Tk allows a rapid development cycle for CAPS by
providing many necessary support functions and a simple method for writing GUI interfaces.
CAPS performs six primary functions:
general array processing operations
reading HRPT (High Resolution Picture
reading and writing HDF files.
geographic location of AVHRR image pixels.
conversion of radiometer counts to radiance,
reflectance and brightness temperature.
mapping data from the satellite coordinate
system to standard geographic coordinates.
The basic CAPS functions listed above
are supported by a numeric array processor. The relationship between the various software
elements of CAPS and Tcl/Tk can be found at the CAPS software homepage.
The CAPS project is being supported by the
CSIRO Earth Observation Centre,
CSIRO Mathematical and Information Sciences,
CSIRO Marine and Atmospheric Research and the
Australian Bureau of Meteorology.