An underwater acoustic deception system deceives a sensor installed on a threat existing in or on water by acoustic effect in order to protect ships from the threat. The underwater acoustic deception system is provided with a control device, a laser oscillator and emission optical system. The control device determines a focusing position to focus a laser beam (50) in water in order to generate bubbles (70) at a desired position with a desired scale and emission parameters of the laser beam (50). The laser oscillator generates the laser beam (50) configured to focus in water and generate bubbles. The emission optical system emits the generated laser beam (50) to the focusing position. The underwater acoustic deception system deceives an arbitrary sensor existing in the water by acoustic effect of the bubbles (70) on the surroundings.

A defense system that receives information regarding an incoming object(s), then automatically coordinates spoofing or jamming of SATNAV signals potentially used by the incoming object(s) while also informing friendly systems of the spoofing or jamming of SATNAV signal.

A defense system that receives information regarding an incoming object(s), then automatically coordinates spoofing or jamming of SATNAV signals potentially used by the incoming object(s) while also informing friendly systems of the spoofing or jamming of SATNAV signal.

A system for inspecting an acoustic treatment applied to the hull of a maritime vessel includes an underwater inspection system including at least one signal emitter configured to emit a signal, at least one receiver configured to receive the signal after the signal has come into contact with the acoustic treatment applied to the hull of the maritime vessel, wherein the signal provides information about the integrity of the acoustic treatment and a processor configured to perform signal processing on the received signal and generate an output comprising information about one or more parameters of the acoustic treatment. The inspection system thereby allows for in-water inspection of acoustic treatments applied to a maritime vessel thus avoiding the need for a costly and time-consuming inspection of such a vessel while in dry-dock.

A system for inspecting an acoustic treatment applied to the hull of a maritime vessel includes an underwater inspection system including at least one signal emitter configured to emit a signal, at least one receiver configured to receive the signal after the signal has come into contact with the acoustic treatment applied to the hull of the maritime vessel, wherein the signal provides information about the integrity of the acoustic treatment and a processor configured to perform signal processing on the received signal and generate an output comprising information about one or more parameters of the acoustic treatment. The inspection system thereby allows for in-water inspection of acoustic treatments applied to a maritime vessel thus avoiding the need for a costly and time-consuming inspection of such a vessel while in dry-dock.

A reception unit receives, with an ultrasonic sensor, received signals including a reflected wave obtained when an acoustic signal emitted from a mobile body is reflected by an object. A disturbance judgment unit judges whether a jamming attack in which a jamming signal is transmitted from outside is being made, on the basis of the received signals. An object detection unit detects an object in surroundings of the mobile body on the basis of the received signals if it is judged that no attack is being made and does not perform object detection if it is judged that an attack is being made.

A reception unit receives, with an ultrasonic sensor, received signals including a reflected wave obtained when an acoustic signal emitted from a mobile body is reflected by an object. A disturbance judgment unit judges whether a jamming attack in which a jamming signal is transmitted from outside is being made, on the basis of the received signals. An object detection unit detects an object in surroundings of the mobile body on the basis of the received signals if it is judged that no attack is being made and does not perform object detection if it is judged that an attack is being made.

A defense system that receives information regarding an incoming object(s), then automatically coordinates spoofing or jamming of SATNAV signals potentially used by the incoming object(s) while also informing friendly systems of the spoofing or jamming of SATNAV signal.

A defense system that receives information regarding an incoming object(s), then automatically coordinates spoofing or jamming of SATNAV signals potentially used by the incoming object(s) while also informing friendly systems of the spoofing or jamming of SATNAV signal.

The invention relates to a portable electronic signal generator, and in particular a programmable multi-waveform radiofrequency generator for use as battlefield decoy.