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Accession Number:
AD0607255
Title:
INTERACTION OF SIGNAL AND NOISE IN A NONLINEAR SYSTEM
Corporate Author:
HARVARD UNIV CAMBRIDGE MA CRUFT LAB
Report Date:
1964-07-27
Abstract:
An experimental system has been constructed which simulates the detection stage of a receiver. With the application of periodic bursts of sine- wave plus Gaussian noise at the input, the output of this system is a non stationary random process. The addition of noise to the signal suppresses the mean at the output for the half-wave linear detector. However, the mean is unchanged for the half-wave square-law detector. The non-stationary variance is seen to vary between two values which can be easily measured. Output signal-to- noise ratio is greater for the half-wave square-law device than for the half- wave linear device. Addition of a clipper to the half-wave linear device decreases the signal-to-noise ratio. Detection characteristics of the half-wave linear and half-wave square-law devices are found to be equivalent and the clipper degrades the detection characteristic.
Supplementary Note:
DOI: 10.21236/AD0607255
Pages:
0053
Distribution Statement:
Approved for public release; distribution is unlimited.
Contract Number:
NONR-1866(16)
File Size:
1.62MB
