Pre-Filtering to Enhance Clipper Correlator Performance
NAVAL UNDERWATER SYSTEMS CENTER NEWPORT RI
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The use of appropriate pre-filtering in a clipper correlator yields performance within 1 dB that attainable by means of a linear correlator which utilizes optimum pre-filters. A good choice of pre-filters are the Eckart filters for each of the individual system inputs. These conclusions hold for small signal-to-noise ratio and independent Gaussian noises at the system input.