Arrangement for measuring the distance separating the arrangemen

Communications: directive radio wave systems and devices (e.g. – Combined with diverse type radiant energy system – With infrared device

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342126, 102427, G01S 1308, G01S 1386

Patent

active

047616520

ABSTRACT:
A distance-measuring arrangement including transmission means for transmitting a wave in a measuring field, receiving means for receiving the wave reflected from a moving body moving in the measuring field and for producing a beat signal from the Doppler frequency. Delimiting means is provided for forming, in the measuring field, at least two datum lines (Ca and Cb) and processing means is provided for processing the distance information obtained from measuring the Doppler frequencies at the instants when the moving body crosses the datum lines. The delimiting means are formed from thermal detectors disposed in an optical assembly having at least two optical axes for defining the datum lines. A timing circuit is provided for defining the instants at which the moving body crosses the datum lines and for applying this information to the processing means.

REFERENCES:
patent: 3010102 (1961-11-01), Ketchledge et al.
patent: 4118702 (1978-10-01), Rabinow
patent: 4268167 (1981-05-01), Alderman

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