

INCA333
INCA333 is intended to calculation of the spectral effective emissivities and radiance temperatures for a cylindrical cavity with a flat inclined bottom and flat annular diaphragm. INCA333 employs the Three-Component (3C) model of reflection and allows to fit the 3C model parameters to the measured BRDFs. INCA333 also provide a possibility to build physically plausible BRDFs within the framework of 3C reflection model and use them when there are no enough experimental data for materials of cavity walls. See key features of INCA333 in Comparative Table. For details, download INCA333 Manual.
To purchase the License go to the Purchase page.
INCA333 doesn't require special efforts for installation. Simply download the Evaluation version, unzip it, save anywhere on the hard drive, and run INCA333.exe. The Evaluation Version has several restrictions (see details in the appropriate Section of the Manual.) After purchasing the product license, you'll receive an activation key which will turn the purchased product into a fullly functioned unrestricted version. The Software Licence Agreement is included into zip-file with the Evaluation version. Please go to the Purchase page to see how to Purchase the license.
INCA333 works with 3C BRDF model, which represents radiation reflected from the cavity wall by the sum of diffuse, specular, and glossy components. It has the unique utility that uses the particle swarm optimization technique for multidimensional global optimization applied to the fitting of the 3C model parameters to the measured in-plane BRDFs. Besides, INCA333 allows to extend the applicabilty of the BRDF parameters fitted for one wavelength to the spectral range in which blackbody radiation characteristics should be computed.
Click here to read more about 3C BRDF model, BRDF fitting and spectral directional-hemispherical reflectance separation.
The use of experimental data for materials and coatings of the internal surface of a blackbody radiating cavity provides the highest reliability for results of numerical modeling.
Animation at right illustrates fitting of 3C BRDF model to the BRDFs of the rough graphite sample measured at 3 incidence angles in the plane of incidence.