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GeoSwath 4R 125 kHz

Portable wide angle multibeam and co-registered side scan in a splash proof deck unit suitable for use in depths to 200m

GeoSwath 4R offers the industry’s most efficient simultaneous swath bathymetry and side scan seabed map¬ping system for shallow water. Bathymetry data accuracies have been shown to exceed the IHO Standards for Hydrographic Surveys, while providing seafloor coverage of up to 12 times the water depth and data from nadir to the waterline.

Description

The side scan data can be calibrated for repeatable results to provide seabed classification and monitoring. The new hardware provides twice the data density and increased nadir performance compared to its predecessors in a rugged portable design. The specifically developed GS4 acquisition and processing software included with the system delivers automatically cleaned data in real time. The splash protected deck unit is designed to be deployed on small vessels, RIBs and jet skis equipped with a 24 V power supply.

System Components

The GeoSwath 4R turn-key solution comprises a dual transducer head and a splash protected deck unit containing the complete sonar electronics, which can be interfaced via an Ethernet connection to the control laptop PC running the new GS4 software.

Dual sonar head

The transducers are available in a choice of three frequencies: 125, 250, 500 kHz, varying in depth performance and data resolution depending on the survey task. A wide range of motion reference units (MRU) and sound velocity sensors (SVS) can be mounted on the compact head. This has been designed for easy deployment on a supplied pole for over-the side or bow-mount options.

Deck Unit

The compact splash protected housing contains the complete system electronics. All peripheral sensors (position, motion, heading, transducer face sound velocity, sound velocity profiler and tide) are interfaced directly via IP66 rated connections. The system has been newly designed for increased performance. It offers twice the data density compared to its previous versions and increased nadir performance. All peripheral sensors (position, motion, heading, transducer face sound velocity, sound velocity profiler and tide) are interfaced directly.

GS4 Software

The GS4 software has been specifically designed for the new GeoSwath 4. It is included with the system and provides a complete project based solution; acquisition, storing and editing of sonar and ancillary data, grid-based patch test calibration, data processing, advanced bathymetry data gridding, side scan mosaicing and 3D data visualisation. Newly developed filter algorithms provide real time processed data with minimum user intervention even in difficult survey situations involving vertical structures, shipwrecks and steep seabed slopes.

***News Flash***

GS4 software v1.0.25 is ready for general release soon

The update introduces a new Artificial Intelligence-powered data processing for GeoSwath users, which has already been trialed by selected end-users globally.

The system improves in-survey operational agility and decision support by providing a high-quality real-time data stream on board while cutting the time to final product in post-processing.

Other new functionality with this update includes Survey Accuracy verification, and an Auto mode for side scan data processing. A full change log is available on request.

The GS4 v1.0.25 software update is available free of charge1 via micro-SD card for customers already using GS4 v1.0.24.

Contact your local dealer or email [email protected] for more information. 

1Cost of physical media, logistics and support may be applicable.

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Specifications

Physical properties of transducer head

Length [m]

0.661

Width [m]

0.411

Height [m]

0.325

Min. external power [V]

24

Max. external power [V]

24

Max. power consumption [W]

55

Transducer Head Weight, appr. including peripherals

44 kg

Speed of sound

Real-time correction of refraction at transducer head

Y

Real-time integration of SV-profile

N

Interfaces

Compatible software

All standard processing packages including QPS Qinsy and Hypack (real time) and Caris HIPS and SIPS; IVS3D Fledermaus

Compatible hardware

All standard

Real-time access procedure

Data broadcast via Ethernet or file export

Motion compensation

Motion sensors compatible to the system

All standard

Required pitch uncertainty [deg]

0.03

Required roll uncertainty [deg]

0.03

Required heave uncertainty [m]

0.05

Mounting and deployment

Mounting

Hull mounted & Portable

Retractable

N

Used Sonar Methods

Type of system

Phase Measuring Bathymetric Sonar

System Parameters

Min. frequency [kHz]

125

Max. frequency [kHz]

125

Min. depth [m]

0

Max. depth [m]

200

Depth resolution [mm]

6

Max. Slant Range [m]

390

Max. swath as a function of depth

12

Ping frequency [Hz]

30

Min. beam width along track [deg]

0.85

max Swath Update Rate

30 per second (range dependant)

Transducer Type

Standard Dual Head

Pulse length

User selectable

Bottom Coverage

Max. swath width [m]

780

Equal footprint spacing

Y

Equi-angular/equi-distant mode

Uncertainty

Intended S44 order

Special

More information

Distinguishable features

Co-registered side scan as well as bathymetry. Wide 240 degree beam angle.

General

Date of first release

2016

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