Distance measuring device

Details Distance measuring device Distance measuring device

1987-06-01

1990-02-27

Buczinski, Stephen C.

Communications: directive radio wave systems and devices (e.g.,

Determining distance

342128, G01S 1332

Patent

active

049050095

ABSTRACT:
A distance measuring device transmits a continuous alternating wave from a wave source to a target which reflects it back toward the device. The wave source is activated until such time that a detector associated with the device senses the beginning of the reflected wave at which time the wave source is deactivated. The wave source is deactivated during the time that the reflected wave is sensed by the detector and upon the sensing of the end of the reflected wave, the wave source is again activated. The frequency at which the wave source is alternately activated and deactivated is a measure of the distance between the measuring device and the target.

REFERENCES:
patent: 3081455 (1963-03-01), Beling et al.
patent: 3167766 (1965-01-01), Norris, Jr.
patent: 3264643 (1966-08-01), Nilssen
patent: 3577143 (1971-05-01), Poirier et al.
patent: 3603990 (1971-09-01), Poirier
patent: 3614226 (1971-10-01), Vergoz
patent: 3652161 (1972-03-01), Ross
patent: 4427981 (1984-01-01), Kyriakos
patent: 4435708 (1984-03-01), Kyriakos
patent: 4568938 (1986-02-01), Ubriaco
patent: 4599618 (1986-07-01), Haendel et al.

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