PROCEDURE AND DEVICE FOR ACOUSTIC DETECTION IN THE PRESENCE OF A PARASITE NOISE SOURCE WITH A LOW SIGNAL / NOISE RELATIONSHIP.

摘要

THE TECHNICAL SECTOR OF THE INVENTION IS THAT OF THE DEVICES OF PROTECTION AGAINST NOISE AND OTHER ACOUSTIC WAVES, WHOSE MAIN APPLICATION IS THE SUBMARINE FIELD. THE ACOUSTIC DETECTION PROCEDURE ACCORDING TO THE INVENTION IS SUCH THAT: - A VIBRATION DETECTOR IS PLACED AT LEAST (7 1 DIRECTLY AT LEAST ONE NOISE SOURCE (1 1) LOW SIGNAL RELATIONSHIP PARASITE, FROM WHICH THE SIGNAL IS TAKEN AS WELL FROM ITS ORIGIN AND THEN IT IS TAKEN THEN AS A SIGNAL OF REFERENCE, AND (9) THE PART OF THE SIGNAL IS TAKEN BY AN ANTENNA (2) OF ACOUSTIC PRESSURE MEASUREMENT ASSOCIATED WITH A UNIT (10) OF TREATMENT OF THE SIGNAL AND THAT CORRELATION WITH SUCH SIGNAL REFERENCE SIGNAL - ASSOCIATE THE SUPPORT (20) OF SUCH ANTENNA (2) TO A DYNAMIC MOVEMENT CONTROL SYSTEM (4,5,8) THAT IS MANAGED BY THE SIGNAL TAKEN BY ANY ERROR DETECTOR ( 6) SOLIDARITY TO THE SUPPORT OF THE ANTENNA (2) TO BE MINIMUM - THEN DETERMINED THEN (10) THE CHARACTERISTICS OF ANY OTHER POSSIBLE ACOUSTIC OUTDOOR SOURCE NOT KNOWN.