Sonar system with curved antenna or antenna configured to transmit the same transmission pattern as the curved antenna

摘要

Sonar system intended for imaging the seabed, comprising at least one transmit antenna (10) intended to transmit an acoustic beam covering a useful angular sector (4) delimited by a first direction (d1) and a second direction (d2), the distance between the antenna (10) and the seabed (5) being bigger in the first direction (d1) than in the second direction (d2). The transmit device is configured in such a way as to form a transmission pattern whose maximum is situated substantially in the first direction (d1) and which decreases from the first direction (d1) to the second direction (d2) and from the first direction (d1) in the opposite sense to the second direction (d2), the energy attenuation being faster in the sense opposite to the second direction (d2) than towards the second direction (d2).