Abstract
The detection of weak sonar signals in a system exhibiting interchannel noise correlation may be enhanced by a beam-forming technique first introduced hy Mermoz, which maximizes the output signal-to-noise ratio. Such a system has been implemented, using an analog computer, for the case of two input channels. The system automatically adjusts to slowly varying values in the noisecorrelation matrix. The output S/N, as a function of bandwidth and interchannel correlation magnitude and time delay, is compared to that of conventional processors employing simple delay and summation of inputs. In addition, the sensitivity of the technique to component tolerances is discussed.
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