SYSTEME OPTIMISE DE DETECTION ACOUSTIQUE DE DIVERSES MENACES SOUS-MARINES SUR UNE ZONE SENSIBLE

摘要

An acoustic detection system is provided for detecting targets at least partially immersed in a defined sensitive area with respect to an infrastructure, the detection system comprising at least one multistatic detection group, each multistatic detection group defining a detection zone. , and comprising: a submerged transmitter (31) emitting at low frequencies; A plurality of submerged receivers (32) comprising at least two receivers, each receiver of a given group forming a bistatic pair with the transmitter of the group, each bistatic pair generating an elemental detection zone (320) surrounding a shadow zone (321), the detection zone of the group consisting of all the elementary detection zones of the group's receivers, said receivers being arranged in at least one layer, For at least one group of the system, the form described by the receivers at least one layer of the group is at least partially circular in shape of given radius (R), the inter-receptive distance (2a) between two adjacent receivers of the distance-dependent layer (D) between the transmitter of the group (31) ) and the rectilinear segment connecting the adjacent receivers of the layer, said reference transmitter-receiver distance.