Mr. William E. Walker Profile

William E. Walker

at National Technical Systems Inc

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Publications (2)

Proceedings Article | 13 September 2007 Paper

Coherent backscatter: measurement of the retroreflective BRDF peak exhibited by several surfaces relevant to ladar applications

Thomas Papetti, William Walker, Charles Keffer, Billy Johnson

Proceedings Volume 6682, 66820E (2007) https://doi.org/10.1117/12.731428

KEYWORDS: Bidirectional reflectance transmission function, Backscatter, Sensors, LIDAR, Scattering, Beam splitters, Reflectivity, Polarization, Silica, Calibration

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Proceedings Article | 4 May 2007 Paper

MRDF and BRDF measurements of low-scatter materials

Thomas Papetti, William Walker, Charles Keffer, Billy Johnson

Proceedings Volume 6550, 65500H (2007) https://doi.org/10.1117/12.718662

KEYWORDS: Bidirectional reflectance transmission function, Sensors, Beam splitters, Reflectivity, Polarization, Calibration, Target detection, LIDAR, Polishing, Optical testing

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