4results about "Sonar signalling devices" patented technology

A maritime drone as uncrewed surface vessel is provided. The maritime drone has a control and a monohull. The control is configured such that a movement and / or an operation of the maritime drone is autonomously controlled by the control. The monohull has a casing which encloses an interior volume of the maritime drone. The maritime drone comprises at least one sonar sensor which is coupled to the control and is configured for detecting underwater objects. The at least one sonar sensor is arranged within the maritime drone. The maritime drone has furthermore compact dimensions, namely a maximum length of 200 cm, a maximum width of 60 cm, a maximum height of 60 cm and a maximum weight that the maritime drone can be transported by a single person. The maritime drone comprises a self-righting functionality, which is based at least on a shape of the monohull and a weight distribution of the maritime drone.

Proposed is an underwater drift tracking system based on a maritime positioning platform. The underwater drift tracking system may include a plurality of underwater drifting objects configured to transmit sound wave signals including their own water depth information by using sound wave communication while drifting underwater. The underwater drift tracking system may also include a maritime drift tracker configured to track real-time underwater locations of the underwater drifting objects by moving on the sea under its own power, receiving the transmitted sound wave signals from the plurality of underwater drifting objects, and calculating absolute location information of the plurality of underwater drifting objects using the received sound wave signals.

Example systems and methods are provided herein for generating paths for watercraft. Such systems include a memory and a processor, and the processor is configured to determine a set of condition parameters that each correspond to desired conditions for a potential navigation path, select at least one condition parameter from the set of condition parameters, and then determine and apply a constraint relaxation to the selected condition parameter(s) to form constraint relaxed condition parameter(s), each of which increases a range of input values that satisfy the corresponding desired conditions for the potential navigation path. The processor is also configured to determine a region based on an updated set of condition parameters, including the constraint relaxed condition parameter, and then to determine a navigation path within the region.

A floating body apparatus and a floating body system are provided. The apparatus includes a floating body and a detection sensor. The detection sensor for detects information of an obstacle around the floating body, the detection sensor is arranged at a bottom or a side surface of the floating body, so as to be lower than a water surface, a vertical distance H between the detection sensor and the water surface satisfies 0<H≤13 cm, and when a pipe line exists on the water surface at a front end of a movement direction of the floating body, the floating body performs an avoidance action to avoid the pipe line.