Object position and surface determining methods and apparatus

Details Object position and surface determining methods and apparatus Object position and surface determining methods and apparatus

G - Physics

01

B

33/46, 340/136.3

G01B 11/14 (2006.01) G01S 1/70 (2006.01) G01S 17/32 (2006.01)

Patent

CA 1102428

C23-01? ABSTRACT OBJECT POSITION AND SURFACE DETERMINING METHODS AND APPARATUS In determining distance between an object and a refer- ence plane in a given volume, a pattern of divergent radiant energy is propagated in a direction irradiating the object and, while the pattern is translated along an axis in the reference plane, radiant energy reflected from the object is collected at any convenient location. An output signal is generated in ac- cordance with the repetition rate of the collected radiant energy and is processed to define object distance in a direction out- wardly of the reference plane. The radiant energy pattern is preferably encoded in a manner facilitating the determination, from collected energy, of object positional information addi- tional to such outward distance from the energy collecting loca- tion. Additional positional information may be acquired from line-of-sight information when the collection location is posi- tionally known with respect to the reference plane.

281426

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