EXTRACTING ANALOGUE SIGNALS FROM NOISE USING A DIGITAL COMPUTER.
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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It is frequently convenient in data processing to convert analogue to digital data for computer assimilation. A convenient method of such conversion has been developed and used in the study of correlation detection of the audio signals corrupted by noise. A method to use apriori knowledge of the corrupting noise to increase processing gain has been studied. In the case of detection of a sinusoid in noise, an additional gain over convertial auto-correlation of up to 14.5 db has been achieved. Finally, a signal source located in an unknown random noise field was detected classified and located in relative bearing by the cross-correlation of the signals received from two spatially separated sensors. Author
- Computer Hardware