Method and apparatus for determining the distance of an object

Details Method and apparatus for determining the distance of an object Method and apparatus for determining the distance of an object

1986-08-29

1988-08-23

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237G, 250231SE, 356 1, 356 4, 356 28, G01N 2186, G01V 904, G01C 300

Patent

active

047663235

ABSTRACT:
The present invention provides a method and apparatus to determine the position, velocity and orientation of an object with respect to an observation point. It consists of placing a sensor spaced from the object and placed at the observation point which will emit two non-parallel beams of light toward the object. Retroreflectors on the object will reflect the light in opposite direction to generate pulses of reflected light caused by the angular relative motion between the incident beam of light and the retroreflectors. A processor can be used to provide an indication of the position, velocity and orientation of the object based on the time interval between reflected pulses.

REFERENCES:
patent: 3023317 (1962-02-01), Willits et al.
patent: 3180205 (1965-04-01), Heppe et al.
patent: 4329047 (1982-05-01), Kikuchi et al.
patent: 4652121 (1987-03-01), Ito et al.

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