Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1990-10-03
1993-04-13
Buczinski, Stephen C.
Optics: measuring and testing
Range or remote distance finding
With photodetection
180167, 180169, 356141, 356152, G01C 308, G01C 100, G01B 1126, B60T 716
Patent
active
052027422
ABSTRACT:
A laser radar apparatus for producing a pulse modulated transmitted light beam and receiving reflected light beams from road mounted retroreflectors. In the preferred embodiment, a floodlight beam illuminates a portion of a roadway from 20 to 150 in front of a vehicle. Reflected beams from retroreflectors mounted in the roadway are received by the radar unit which calculates distance D and angle .theta. between the laser radar apparatus and each retroreflector. Distance D is calculated by measuring the propagation delay of the pulse modulated light beam. Angle .theta. data is indicated by measuring where on a receiver photodiode array the light beam is incident.
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Frank Andrew A.
Nakamura Masahiko
Aisin Seiki Kabushiki Kaisha
Buczinski Stephen C.
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