R2Sonic 2026 - 6 SONIC MBES THEORY OF OPERATION; 6.1 Sonic MBES Sonar Head Block Diagram

Page 117 of 254
Version
6.3
Rev
r012
Date
05-11-2022
6 SONIC MBES THEORY OF OPERATION
The Sonic MBES transmits a shaped continuous wave pulse at the user-selected frequency. The
transmit pulse is narrow in the alongtrack direction, but very wide in the across-track direction. The
reflected acoustic energy is received via the Sonic MBES receivers; within the Receive Module the
beams are formed, and the bottom detection process takes place. The resultant bottom detections
(range and bearing) are then sent, via Ethernet, through the deck lead, to the Gigabit switch in the
SIM and out of the RJ45 connections to Sonic Control and the data collection software.
6.1 Sonic MBES Sonar Head Block Diagram
Receive Module
Receivers
Wet Controller
Beam Former
Bottom Detection
To SIM
Gigabit Ethernet
Transmitter Board
Projector
Transmitter Power
Supply
Low Voltage Power
Supply
Med. Voltage Power
Supply
48 DCV from
SIM
Figure 139: SONIC 2024 Sonar Head Block Diagram