A system for monitoring the functioning of a plurality of radiating elements in an antenna array of a radar, the radiating elements (1) being positioned beneath a radome (6); the system comprising a plurality of probes (7) arranged to be embedded in or attached to a surface of the radome to measure parameters of a field radiated from the array of radiating elements, means for acquiring (100) the measured parameters from the probes and for processing (102) the measured parameters to identify faulty operation of one or more of the radiating elements based on the measured parameters and to identify the one or more radiating elements identified as having faulty operation.

The present disclosure provides a ship monitoring system capable of improving legibility of an OZT. The ship monitoring system includes a first data generator, a second data generator, and processing circuitry. The first data generator generates first ship data indicative of a position and a velocity of a first ship. The second data generator generates second ship data indicative of a position and a velocity of a second ship. The processing circuitry calculates a risk value indicative of a risk of a collision between the first ship and the second ship based on the first ship data and the second ship data, for each point on an estimated course of the second ship, when the first ship is assumed to change a course and reach the point. The processing circuitry specifies a range where two or more continuous points have the risk values above a threshold. The processing circuitry displays a risk range including the range where the two or more continuous points have the risk values above the threshold.

The present disclosure provides a ship monitoring system capable of improving legibility of an OZT. The ship monitoring system includes a first data generator, a second data generator, and processing circuitry. The first data generator generates first ship data indicative of a position and a velocity of a first ship. The second data generator generates second ship data indicative of a position and a velocity of a second ship. The processing circuitry calculates a risk value indicative of a risk of a collision between the first ship and the second ship based on the first ship data and the second ship data, for each point on an estimated course of the second ship, when the first ship is assumed to change a course and reach the point. The processing circuitry specifies a range where two or more continuous points have the risk values above a threshold. The processing circuitry displays a risk range including the range where the two or more continuous points have the risk values above the threshold.

The present disclosure provides a ship monitoring system which makes it easy for a user to grasp a change in a risk situation. The ship monitoring system includes a first data generator, a second data generator, processing circuitry, and an alarm sounding part. The first data generator generates first ship data indicative of a position and a velocity of a first ship. The second data generator generates second ship data indicative of a position and a velocity of a second ship. The processing circuitry calculates a risk value indicative of a risk of a collision between the first ship and the second ship based on the first ship data and the second ship data. The processing circuitry generates a discontinuous sound pattern with an interval according to the risk value. The alarm sounding part sounds an alarm according to the discontinuous sound pattern.

The present disclosure provides a ship monitoring system which makes it easy for a user to grasp a change in a risk situation. The ship monitoring system includes a first data generator, a second data generator, processing circuitry, and an alarm sounding part. The first data generator generates first ship data indicative of a position and a velocity of a first ship. The second data generator generates second ship data indicative of a position and a velocity of a second ship. The processing circuitry calculates a risk value indicative of a risk of a collision between the first ship and the second ship based on the first ship data and the second ship data. The processing circuitry generates a discontinuous sound pattern with an interval according to the risk value. The alarm sounding part sounds an alarm according to the discontinuous sound pattern.

An object detection device includes an external sensor, an inertia sensor, and a control device. The external sensor is fixed to a ship. The external sensor detects an object. The inertia sensor detects information related to an inertial force applied to the ship. The control device acquires a state of relative displacement of a detection object on the basis of a signal output from the external sensor. The control device acquires a state of an attitude change of the ship on the basis of a signal output from the inertia sensor. The control device determines whether a detection object is present outside the ship according to a correlation between the state of the attitude change of the ship and the state of the relative displacement of the detection object.

A detection device is provided on a ship and detects a predetermined range positioned in front of the ship, the detection device being provided on a structure erected above a deck of the ship and being provided on a part positioned on a side of a bow of the structure.

A detection device is provided on a ship and detects a predetermined range positioned in front of the ship, the detection device being provided on a structure erected above a deck of the ship and being provided on a part positioned on a side of a bow of the structure.

A ship navigation assisting device includes: an area setter 304 that sets, for a target ship, a polygonal safe navigation area defined by a plurality of vertices and surrounding the target ship; a collision point calculator 305 that calculates, based on a speed of the own ship, a relative position between the own ship and the target ship, and a velocity vector of the target ship, collision points between each of the plurality of vertices constituting the safe navigation area and the own ship; and a collision danger area calculator 306 that connects the plurality of collision points calculated by the collision point calculator 305 to calculate a collision danger area.

A ship navigation assisting device includes: an area setter 304 that sets, for a target ship, a polygonal safe navigation area defined by a plurality of vertices and surrounding the target ship; a collision point calculator 305 that calculates, based on a speed of the own ship, a relative position between the own ship and the target ship, and a velocity vector of the target ship, collision points between each of the plurality of vertices constituting the safe navigation area and the own ship; and a collision danger area calculator 306 that connects the plurality of collision points calculated by the collision point calculator 305 to calculate a collision danger area.