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CHOICE OF SIGNAL PARAMETERS FOR ACCENTUATION OF CLASSIFICATION CLUES BASED UPON SUBMARINE HULL-WAKE CHARACTERISTICS.
TRACOR INC AUSTIN TEX
This document is an excerpt from the final report now in preparation under this contract. While it covers the choice of pulse forms for classification in a general way, it also addresses itself to the question of the relative value in obtaining highlight detail of short CW pulses and wide-band, long pulses, such as the linear FM sweep. Two points are made 1 with a short CW pulse a single sampling of the echo structure in a single sample of noise is obtained and 2 with a long FM sweep an independent sampling of the echo is observed in a new sample of background every 1B seconds, where B is at least as large as the bandwidth of the transmitted pulse. In order to obtain clean highlight details with a short pulse, either good signal-to-noise ratios must be available or a number minimize the effects of the background.