SigSim Natural and Man-Made Source Modeling

SigSim Natural and Man-Made Source Modeling
For any 3D location, time, date and atmosphere/weather condition, SigSimRT instantly provides all the natural source quantities necessary for accurate lighting, reflectance and thermal loading, including:

• Solar position, direct/diffuse spectral irradiance
• Lunar position/phase, direct/diffuse spectral irradiance
• Stellar constellation positions and spectral irradiances
• Downwelling sky and cloud spectral irradiances
• Upwelling earthshine spectral irradiance

In addition, SigSimRT instantly provides the correct spectral radiance from man-made light sources, including tungsten, sodium, mercury, neon, and polymetallic lamps.