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Ultrasonic Ranging System With Increased ResolutionMaster-oscillator frequency increased. Ultrasonic range-measuring system with 0.1-in. resolution provides continuous digital display of four distance readings, each updated four times per second. Four rangefinder modules in system are modified versions of rangefinder used for automatic focusing in commercial series of cameras. Ultrasonic pulses emitted by system innocuous to both people and equipment. Provides economical solutions to such distance-measurement problems as posed by boats approaching docks, truck backing toward loading platform, runway-clearance readout for tail of airplane with high angle attack, or burglar alarm.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Meyer, William E.
(Rockwell International Corp.)
Johnson, William G.
(Rockwell International Corp.)
Date Acquired
August 13, 2013
Publication Date
October 1, 1987
Publication Information
Publication: NASA Tech Briefs
Volume: 11
Issue: 9
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.

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