A Comparison of 'Pulse-Stretch' and Conventional Marking Techniques.
TRACOR INC AUSTIN TEX
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Psychophysical methods were employed in comparing proposed pulse-stretch display marking techniques, in which the length of a display mark is some function of the processor output, with intensity Z-axis modulated displays. The comparisons were made on the basis of singal detectability using observer ROC curves. The simulation of these ANSQS-26 A-scan displays was done with the aid of a digital computer. Both constant and variable inteisity pulse-stretch marking were investigated. The matched display using only intensity modulation was found to be superior to those using pulse-stretch marking for signal-to-noise ratios encompassing minimum detectable levels. Author
- Acoustic Detection and Detectors