Accession Number:

AD0739937

Title:

The Effects of Limiters on the Detection of Narrow Band Signals in Broad Band Noise,

Descriptive Note:

Corporate Author:

FLORIDA UNIV GAINESVILLE ENGINEERING AND INDUSTRIAL EXPERIMENT STATION

Personal Author(s):

Report Date:

1972-03-08

Pagination or Media Count:

35.0

Abstract:

The effects of hard limiting on a narrow-band signal in broad-band Gaussian noise is analyzed. The post-limiting spectrum of the noise is shown to be a function not only of the signal-to-noise ratio SNR applied to the limiter but also of the frequency f sub 0 of the signal within the bandwidth B of the noise. The output signal-to-noise ratio is computed for a narrow-band filter following the limiter and centered on the signal frequency. For large input SNR, the output SNR is shown to be improved by a factor of 2 if the signal frequency is greater than B3 and to be degraded by the factor 4 f sub 0B if the signal frequency is located in the lower frequency region of the noise band. Author

Subject Categories:

  • Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE