Method and device for determining the position of sound sources in water

Claim 1

A SYSTEM FOR LOCATING THE POSITION OF AN ENERGY RADIATING SOURCE COMPRISING FIRST, SECOND AND THRID SPACED APART ENERGY RECEIVING MEANS, SAID FIRST, SECOND AND THIRD RECEIVING MEANS EACH COMPRISING MEANS RESPONSIVE TO THE ENERGY RECEIVED FROM SAID SOURCE FOR PRODUCING FIRST, SECOND AND THIRD ELECTRIC SIGNALS, RESPECTIVELY, WHICH VARY IN ACCORDANCE WITH SAID RECEIVED ENERGY, FIRST CONTROLLABLE DEALY MEANS ARRANGED TO RECEIVE ENEERGY, FIRST ELECTRIC SIGNAL AND PRODUCE A FIRST DELAYED SIGNAL, SECOND CONTROLLABLE DELAY MEANS ARRANGED TO RECEIVE SAID SECOND ELECTRIC SIGNAL AND PRODUCE A SECOND DELAYED SIGNAL, FIRST AND SECOND CORRELATOR MEANS EACH ADAPTED TO COMPARE TWO ELECTRIC SIGNALS AND PRODUCE A SIGNAL INDICATING COHERENCE BETWEEN THE COMPARED SIGNALS, SAID INDICATING SIGNAL HAVING A DIRECT CURRENT COMPONENT AND AN ALTERNATING CURRENT COMPONENT, MEANS FOR SUPPLYING SAID FIRST DELAYED SIGNAL AND SAID THIRD SIGNAL TO SAID FIRST CORRELATOR MEANS TO PRODUCE A FIRST INDICATING SIGNAL, MEANS FOR APPLYING SAID SECOND DELAYED SIGNAL AND SAID THIRD SIGNAL TO SAID SECOND CORRELATOR MEANS TO PRODUCE A SECOND INDICATING SIGNAL, THIRD CORRELATOR MEANS, AND MEANS FOR APPLYING THE ALTERNATING COMPONENT OF SAID FIRST AND SECOND INDICATING SIGNALS TO SAID THIRD CORRELATOR MEANS, WHEREBY SAID THIRD CORRELATOR MEANS PRODUCES A CHARACTERISTIC SIGNAL INDICATIVE OF SIMULTANOUS RECEPTION OF ENERGY FROM THE SAME SOURCE.

Claim 2

A SYSTEM FOR LOCATING THE POSITION OF AN ENERGY RADIATING SOURCE COMPRISING FIRST, SECOND AND THRID SPACED APART ENERGY RECEIVING MEANS, SAID FIRST, SECOND AND THIRD RECEIVING MEANS EACH COMPRISING MEANS RESPONSIVE TO THE ENERGY RECEIVED FROM SAID SOURCE FOR PRODUCING FIRST, SECOND AND THIRD ELECTRIC SIGNALS, RESPECTIVELY, WHICH VARY IN ACCORDANCE WITH SAID RECEIVED ENERGY, FIRST CONTROLLABLE DEALY MEANS ARRANGED TO RECEIVE ENEERGY, FIRST ELECTRIC SIGNAL AND PRODUCE A FIRST DELAYED SIGNAL, SECOND CONTROLLABLE DELAY MEANS ARRANGED TO RECEIVE SAID SECOND ELECTRIC SIGNAL AND PRODUCE A SECOND DELAYED SIGNAL, FIRST AND SECOND CORRELATOR MEANS EACH ADAPTED TO COMPARE TWO ELECTRIC SIGNALS AND PRODUCE A SIGNAL INDICATING COHERENCE BETWEEN THE COMPARED SIGNALS, SAID INDICATING SIGNAL HAVING A DIRECT CURRENT COMPONENT AND AN ALTERNATING CURRENT COMPONENT, MEANS FOR SUPPLYING SAID FIRST DELAYED SIGNAL AND SAID THIRD SIGNAL TO SAID FIRST CORRELATOR MEANS TO PRODUCE A FIRST INDICATING SIGNAL, MEANS FOR APPLYING SAID SECOND DELAYED SIGNAL AND SAID THIRD SIGNAL TO SAID SECOND CORRELATOR MEANS TO PRODUCE A SECOND INDICATING SIGNAL, THIRD CORRELATOR MEANS, AND MEANS FOR APPLYING THE ALTERNATING COMPONENT OF SAID FIRST AND SECOND INDICATING SIGNALS TO SAID THIRD CORRELATOR MEANS, WHEREBY SAID THIRD CORRELATOR MEANS PRODUCES A CHARACTERISTIC SIGNAL INDICATIVE OF SIMULTANOUS RECEPTION OF ENERGY FROM THE SAME SOURCE.