Geological and hydrographic seabed survey equipment
for towed bodies, ROVs and AUVs
Purpose
High-resolution geological, hydrographic, and photo-video surveys of the seabed at depths up to 6 000 m, as well as automated detection and identification of local and extended objects (pipelines, cables, etc.), both on the surface and submerged in the seabed, with determination of their spatial position
Objectives
- Generation of detailed sonar images of the seabed and sub-bottom structures with capability of sediment layer stratification
- Synchronization of hydroacoustic data with video monitoring for comprehensive assessment of objects and marine environment
- Real-time display of survey results at the operator’s workstation
- Data transmission to external users via standardized interfaces
- Integration into the underwater vehicle’s navigation and hydrographic system for synchronized operation with other sensors and positioning systems
Composition (for towed body):
Tow body includes antennas modules and video system
Operator workstation
Equipment cabinet
Depressor
Umbilical cable with mounting plate
Technical specifications
|
Name
|
Meaning
|
|---|---|
|
Side-Scan Sonar
|
|
|
Frequencies
|
LF: 195 kHz, HF: 520 kHz
|
|
Range
|
≤ 400m LF, ≤ 200m HF
|
|
Beamwidth
|
0.4°–1° across-track, up to 65° along-track
|
|
Multiphase Echosounder
|
|
|
Frequency
|
210 – 230 kHz
|
|
Along-track beamwidth
|
≤ 0,7°
|
|
Maximum altitude above seabed
|
up to 400 m
|
|
Swath width
|
up to 1 000 m
|
|
Acoustic Parametric Sub-Bottom Profiler
|
|
|
Operating frequency
|
125 kHz
|
|
Parametric frequencies range
|
0.5 – 10 kHz
|
|
Resolution
|
5 cm
|
|
Penetration in coarse sand
|
up to 30 m
|
|
Penetration in clay
|
up to 100 m
|
|
Photo-Video System*
|
|
|
Cameras
|
1 unit
|
|
Resolution
|
≥ 1280×720 pixels
|
|
Sensitivity
|
0.1 lux
|
|
Field of view in water
|
66°
|
|
Optical zoom
|
10x
|
|
Light output
|
≥ 2000 lumens
|
|
Additional Equipment*
|
|
|
INS (stabilization by roll and pitch)
|
|
|
SVS (sound velocity sensor)
|
|
|
Emergency system (strobe, radio beacon, emergency surfacing system)
|
|
|
Acoustic responder beacon compatible with the underwater positioning system
|
|
*Other configurations and equipment options are available on request
