Date of Award


Document Type


Degree Name

Master of Science (MS)



Committee Chair

Don A. Gregory

Committee Member

Kenneth A. Herren

Committee Member

Sayed Sadeghi


Optical radar--Calibration., Reflectance., Fluoropolymers--Optical properties.


The bidirectional reflectance distribution function (BRDF) is of substantial interest to those involved with laser radar (LADAR) target signature modelling. Measured, empirical data must often be used in place of mathematical models due to the complexity of targets encountered in real-world situations. When using a coherent illumination source, interference effects, such as coherent backscatter, must also be considered. This work demonstrates a calibration method for a reference standard as well as the material’s reflectance characteristics. The selected material, Spectralon, was chosen for its well-known diffuse scattering characteristics. Spectralon’s BRDF was measured for 0 through 80 degree incidence angles as well as bistatic angles from -3 to +3 degrees. Enhanced BRDF levels near the retroreflective region due to coherent backscatter were observed for parallel polarizations.



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