Distance measuring system

Details Distance measuring system Distance measuring system

1980-12-17

1983-08-09

Buczinski, S. C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 4, G01C 308

Patent

active

043975488

ABSTRACT:
A modulated light beam from a radiation source on a structure whose posit is to be measured is split into a first beam which propagates through the atmosphere to a first detector and a second beam which travels through an optical fiber to a second detector. The first and second detectors recover the modulation on the first and second beams, the phases of which are compared to determine the distance. In a preferred embodiment, the light source is a sine-wave modulated laser.

REFERENCES:
patent: 3019690 (1962-02-01), Hildebrand et al.
patent: 3022702 (1962-02-01), Pocher
patent: 3511568 (1970-05-01), Hossmann
patent: 4181431 (1980-01-01), Chaborski

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