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  • 1
    Publication Date: 2019-06-27
    Description: The interactive signal analysis and ultrasonic data collection system (ECHO1) is a real time data acquisition and display system. ECHO1 executed on a PDP-11/45 computer under the RT11 real time operating system. Extensive operator interaction provided the requisite parameters to the data collection, calculation, and data modules. Data were acquired in real time from a pulse echo ultrasonic system using a Biomation Model 8100 transient recorder. The data consisted of 2084 intensity values representing the amplitude of pulses transmitted and received by the ultrasonic unit.
    Keywords: COMPUTER PROGRAMMING AND SOFTWARE
    Type: NASA-CR-150745 , REPT-78-066
    Format: application/pdf
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