Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1993-09-30
1996-04-23
Buczinski, Stephen C.
Optics: measuring and testing
Range or remote distance finding
With photodetection
73146, 356 2, 356 301, G01C 308, G01C 1112, G01C 300, E01C 2300
Patent
active
055108890
ABSTRACT:
A system for measuring the quality of pavement surfaces. An amplitude modulated laser scanning system, mounted on a motor vehicle, scans the pavement surface as the motor vehicle travels over it. A detector detects the laser beam reflection from the surface and a phase measuring device counts pulses to digitally determine the phase shift in the reflected laser beam in order to calculate the profile of the surface. The profile information is used to determine various quality features of the pavement surface.
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Buczinski Stephen C.
Ross John R.
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