EXTENSE - Development of a measuring system (multisensor platform) for detection and localisation of objects (cables, ammunition and deep-sea mining) in sediments.

Duration: 01.10.2018 - 30.09.2021
Project Leader: Prof. Dr.-Ing Horst Hellbrück
Staff: Dr.-Ing. Tim Suthau, Andreas Schuldei, Fabian John

Background

In the joint project EXTENSE, we will develop a measuring system (multi-sensor platform) for the detection and location of objects (cables, ammunition and deep-sea mining) in sediments in collaboration with J&C Bachmann GmbH, the Technical University of Lübeck and the associated partner Fugro OSAE GmbH  under the leadership of the Sea & Sun Technology GmbH.

 

Objective

Compared to the state of the art, the aim is not only to locate objects and materials in the seabed more precisely, but also to identify them better. This is achieved by sensor fusion in combination with sonar technology and position determination in order to locate artificial infrastructures such as underwater cables and pipelines reliably and accurately. The measuring system is user-friendly in its application and handling. The system supports the operator with implemented expert knowledge through a new user-friendly user interface, which essentially includes imaging and mechanical integration.

The coordinator Sea & Sun Technology GmbH is responsible for the system development of the measuring system and for the video control unit (subproject SYSOCU). The partner J&C Bachmann GmbH develops a probe for the measurement of the temporal neutron decay spectrum as well as the prompt gamma radiation of a pulsed neutron source (subproject INN). The Technical University Lübeck, Competence Center CoSA, designs an electroimpedance tomography sensor including imaging and develops the sensor fusion of the entire system (subproject FUSEIT).

 

Underwater communication module of an AUV based on electric field

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  Visualization of an electric field
 

Approach

The measuring system consists of a 2D/3D video control unit, a pulse neutron sensor, an electrical impedance tomography sensor and a sub-bottom profiler. Through sensor fusion in combination with position determination, artificial infrastructures such as underwater cables and pipelines are reliably and accurately located. Compared to the state of the art, the developed measuring system should not only be able to locate objects and materials in the seabed more precisely, but also to identify them better.

 

               Schematic structure of the underwater measuring system for the detection of objects in sediments