Sonic direction finding in the presence of strong acoustic interference
Abstract
The problem of acoustic-signal detection in the presence of powerful noise is formulated as a problem of measuring a small correlation coefficient and is given statistical treatment. A polarity coincidence correlator is proposed for the signal detection. The output effect is found to increase as the square of the number of channels while the background is independent of noise level. Experimental data which confirm the theoretical predictions are presented. This paper is a report of work carried out in the early 1940's.
- Publication:
-
Tekhnika i metody radioastronomicheskogo priema
- Pub Date:
- 1979
- Bibcode:
- 1979tmra.rept..126V
- Keywords:
-
- Acoustic Sounding;
- Correlation Detection;
- Noise (Sound);
- Signal Detection;
- Signal To Noise Ratios;
- Coherence Coefficient;
- Interference;
- Relay;
- Electronics and Electrical Engineering