The three-state-polarity-coincidence correlation detector

[摘要] The three-state-polarity-coincidence correlator (PCC'), a two-input detection device with dead zone clippers, has been investigated in detail. A criterion is devised to compare two detectors. Comparisons are made between the PCC' and several other types of detectors. The superiority of the PCC' in the detection of a weak signal embedded in an additive noise over the PCC and other detectors is demonstrated. It is shown, particularly for certain Gaussian inputs, that there exists a maximum relative efficiency with respect to the dead zone width of clippers or the clipping level ;;b;;. It is concluded that the PCC' can always be used to replace the PCC in a weak signal detection.

[发布机构] Rice University