Marine / Bathymetry

Test Conditions

The SBG Inertial Navigation Systems have been tested during a three-day lasting hydrographic survey in the Hamburg (Germany) port area. SBG Systems and MacArtney Germany GmbH equipped a survey vessel with a complete Multibeam Echosounder survey configuration and conducted various tests to show the performance of the SBG Inertial Systems in different challenging environments.

A Multibeam Echosounder (MBES) survey is a method used to map the underwater environment with high precision. This technology employs multiple sonar beams to create detailed, accurate maps of the seafloor, underwater structures, and other submerged features.

Raw INS data were logged in real-time and merged with MBES data from the RESON SeaBat 7125 within the acquisition software Teledyne PDS. Hydrographic data were post-processed and filtered with BeamWorx AutoClean, INS data have been processed using SBG Qinertia. The reference is the tightly coupled Horizon high-end fiber optic solution.

Thank you MacArtney Germany for their help.

Calibration Procedure

3D Model

Calibration based on motion and trajectory data of the SBG Horizon.

The interface includes the survey line, the computed bathymetry, quality indicating layers and topographic features.

Calibration Reports / Offsets

Methodolody

Calibration reports and advised mounting angles for each SBG Inertial System. Offsets for each sensor for the vessel configuration and the sensor setup have been measured during an alignment survey and evaluated.

SBG Inertial Sensors Put to the Test

Navsight Ekinox Grade ››

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Navsight Apogee Grade ››

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Navsight Horizon Grade ››

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Ellipse-D ››

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Qinertia PPK Software ››

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Navigate into the Results

Crossing Multiple Metal-based bridges

Elbbrücken Webmap - All IMUs

Webmap of the river surface of the Elbe along the pillars of the Elbbrücken with bathymetric quality measures and trajectories.

Elbbrücken 3D Model - Horizon IMU

3D Visualization of the Bathymetry below the Elbbrücken in Hamburg based on trajectory data of the SBG Horizon. The interface includes the survey line, computed bathymetry, quality indicating layers and topographic features.

Highly Dense Urban Area

Speicherstadt Webmap - All IMUs

Webmap of the river surface of the Elbe along the channels of the Speicherstadt with bathymetric quality measures and trajectories.

Speicherstadt 3D Model - Horizon IMU

3D Visualization of the Bathymetry along the channels of the Speicherstadt, based on trajectory data of the SBG Horizon. The interface includes the survey line, the computed bathymetry, quality indicating layers and topographic features.

Dock area with High Dynamics

Hamburg Docks Webmap - All IMUs

Webmap of the river surface of the Elbe next to the Docks of the Hamburg Harbour and bathymetric quality measures plus trajectory. During this test dynamic motion patterns, due to swells induced by ships passing the vessel, have been recorded.

Hamburg Docks 3D Model - Horizon IMU

3D Visualization of the Bathymetry of the Elbe next to the Docks of the Hamburg Harbour, based on trajectory data of the SBG Horizon. The interface includes the survey line, the computed bathymetry, quality indicating layers and topographic features

Challenging Figure 8 Test

8 Figure Webmap - All IMUs

Webmap of the river surface of the Elbe during a Figure 8 maneuvre with bathymetric quality measures and trajectory. This manoeuvre is conditioning especially regarding the heading performance of the sensors.

Figure Eight 3D Model - Horizon

3D Visualization of the Bathymetry of the Elbe during a Figure 8 maneuvre based on trajectory data of the SBG Horizon. The interface includes the survey line, the computed bathymetry, quality indicating layers and topographic features