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Enhancement of pulse train signals by comb filters

Content Provider	IEEE Xplore Digital Library
Author	Galejs, J.
Copyright Year	1955
Description	The relative performance of different types of comb filters is investigated in conjunction with signal and noise types similar to those expected in radar applications. The filter types considered are idealized filters with zero transmission stop bands between their pass bands, optimum filters maximizing the peak signal-to-rms-noise ratio, cascaded delay line filters, feedback type filters, and storage tube filters. The pulse train signals consist of rectangular or sinx/xpulses with rectangular or sinx/xpulse envelope shapes. Power spectra of noise considered are rectangular and triangular. With a given number of signal pulses, the performances of the different filters vary from each other only by a few decibels in most cases analyzed. Storage tube filters exhibit lower signal-to-noise power ratios, but higher peak signal-to-rms-noise ratios, than the feedback type filters. Inaccurate delay times of filter delay lines are shown to decrease the peak signal output more than the signal power output and to affect the cascaded delay line filter less than the feedback type filter. Correlation techniques are compared with comb filters. The crosscorrelator exhibits the same peak signal-to-rms-noise ratio as the optimum filter.
Starting Page	114
Ending Page	125
Page Count	12
File Size	1704084
File Format	PDF
ISSN	00961000
Volume Number	4
Issue Number	3
Language	English
Publisher Date	1958-09-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Band pass filters Delay lines Pulse shaping methods Feedback Radar applications Filtering theory Shape Noise shaping Signal analysis Performance analysis
Content Type	Text
Resource Type	Article
Subject	Library and Information Sciences Information Systems Computer Science Applications

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