Path Loss

The pathloss reference file gives the path loss correction as a function of wavelength. There are two types of pathloss calibrations performed: for point sources and for uniform sources.

The point source entry in the reference file is a 3-d array with the pathloss correction as a function of wavelength and decenter within the aperture. The pathloss correction interpolates the 3-d array at the location of a point source to provide a 1-d array of pathloss vs. wavelength. This 1-d array is attached to the data model in the pathloss_pointsource attribute, with corresponding wavelength array in the wavelength_pointsource attribute.

The uniform source entry has a 1-d array of pathloss vs. wavelength. This array is attached to the data model in the pathloss_uniformsource attribute, along with the wavelength array in the wavelength_uniformsource attribute.

• Reference File Types
• CRDS Selection Criteria
• Pathloss Reference File Formats