System and method of tracking an object that is at least partly buried in seabed
AssigneeKongsberg Discovery AS
InventorsJohan Mattsson, Thorbjørn Rekdal
Life of this patent
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Abstract
The disclosure relates to a system for tracking an object that is at least partly buried in seabed, the system comprising: An Autonomous Underwater Vehicle (AUV) having a hull, a controlled electric dipole source mounted on the hull of the AUV; first sensor assembly mounted on the hull in the proximity of starboard side of the AUV (1); second sensor assembly mounted on the hull in the proximity of port side of the AUV; wherein the first and the second sensor assemblies are configured to measure magnetic field from electromagnetic energy transmitted from the controlled electric dipole source. The disclosure further relates to a method of tracking an object that is at least partly buried in seabed.
Claims17
A system for tracking an object that is at least partly buried in seabed, the system comprising:
- an Autonomous Underwater Vehicle, AUV, comprising:
- a hull,
- a first sensor assembly mounted on the hull in proximity to a starboard side of the AUV;
- a second sensor assembly mounted on the hull in proximity to a port side of the AUV;
- and
- a controlled active electric dipole source for transmitting electric current in sequences mounted on the hull of the AUV,
- wherein the first sensor assembly and the second sensor assembly are configured to measure a magnetic field from electromagnetic energy transmitted from the controlled active electric dipole source,
- wherein the first sensor assembly and the second sensor assembly are separated from one another by a distance d in a direction that is perpendicular to a longitudinal direction of the AUV, and
- wherein the system further comprises:
- a processor configured to use measurements from the first sensor assembly and the second sensor assembly to estimate a position of a part of a buried object underneath or close to the AUV by inversion of magnetic field data using amplitudes and phases of the magnetic field measured by the first sensor assembly and the second sensor assembly.
Dependencies are inferred from the claim text.