Signal discriminator

Details Signal discriminator Signal discriminator

G - Physics

01

S

343/114, 343/119

G01S 1/04 (2006.01) G01S 1/08 (2006.01) G01S 3/04 (2006.01)

Patent

CA 1225159

ABSTRACT A signal discriminator is disclosed for use with a listening array, for detecting the presence of a signal coming from a predetermined direction against a background of noise. Signals from the receivers in the array applied to a unanimity circuit which detects the occurrence of unanimity, which is when all the signals are of the same sense. When a coherent signal is present the probability of unanimity occurring is greater than when it is absent. A computer is included which receives signals from the unanimity circuit and analyses them, preferably using sequential sampling technique, to determine whether or not unamity is occurring with a probability high enough to indicate the presence of a coherent signal, and indicates the presence or absence of a signal accordingly.

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