What wavelengths, modalities, etc. can be simulated with the DIRSIG software?

The DIRSIG model is primarily used to model systems that operate in the visible through the long-wave thermal infrared (LWIR) or 0.4 to 20 microns. Under the hood, the model is operating on a spectral basis which allows the user to simulate broad-band, multi-spectral and hyper-spectral sensors. The ultimate spectral resolution of the model is limited by the available resolution of the optical properties (reflectance, emissivity, absorption, etc.) and the atmospheric model (MODTRAN4 is limited to 2 wavenumbers and MODTRAN5 to 0.2 wavenumbers).

The model could be used for UV simulations (down to 0.2 microns), however, optical characterizations of materials at these wavelengths are not common and the development team is not aware of this being attempted.