Multibeam echo sounder

R2Sonic 2022 model

• From 200 kHz to 400 kHz wideband sounder
  
• "Full Water Column" mod
  
• Full digital design (no signal damaged within cables)
  
• Compact with a low weight and low energy consumption
  
• Data timestamp based on GPS time allowing the synchronisation of attitude, positon and acoustic data
  
• 1° x 1° angular aperture,  160° swath, 500 m range
  
• Simultaneous sonar images
  

 

 

 

Inertial navigation unit

 I2NS model by Applanix dedicated to the 2022 sounder

• High synchronisation level with the sounder
• Full GNSS mod (GPS, GLONASS, GALILEO)
  
• 1 cm positioning precision, 1.5 cm vertically
  
• 0.015° precision for rolling and pitching, 0.02° for heading trajectories
  
• Position keeping in inertial mod in case of hidden GNSS antennas
  
• Full watertight captor sharing the same stand with the acoustic probe
  

 

 

 

GNSS

GNSS RTK RTKITE produced by North

• Small, light and easy to integrate on drones and other small devices
  
• Real time positioning with millimetric precision
  
• Sampling frequency 1, 5 or 10 Hz
  
• Navigation and configuration by Bluetooth
  

 

 

 

Celerimeter

Two celerimeters are used:

• One close to the sounder which is essential for acoustic data treatment
• One used to for celerity profiling
  

 

 

 

Ship

The  "Seaviews One" is a ship specially built for bathymetric and sonar campaigns with a perfect integration of the 2022 echosounder

• Low bulk (5.5 m long, weigth <400 kg), low deployment cost
  
• High maneuverability
  
• Low draught (50 cm)
  
• Integrated power source to supply all equipments
  

 

 

 

Underwater camera

 

 

Sony Alpha 6000 camera in an Ikelite case

• Watertight case up to 60 m depth with a TTL plug for external strobe
  
• Sony 10-18 mm wide angle lens
  
• Inon Z240 external strobe with a guide number of 24 and an angular covering of 100°
  
• TTL synchronization with GPS