Abstract: Provided is a nautical drift managing device. The nautical drift managing device includes an input circuitry to receive destination position information for a watercraft. Further, the nautical drift managing device includes a sensor circuitry to obtain external force information associated with the watercraft. Furthermore, the nautical drift managing device includes processing circuitry to determine, based on the destination position information and the external force information, a drift line associated with a drifting movement of the watercraft when an engine of the watercraft is stopped or neutral.

Abstract: A slot array antenna that includes radiation, base, and grating plates is disclosed. The radiation plate has a first surface having multiple slots to radiate radio waves, second and third surfaces forming a horn shape, and proximal and distal connecting members. The base plate has first, second, and third surfaces forming a U-shape, and notches. The connecting members of the radiation are removably insertable into the notches to assemble the slot array antenna for the radiation of the radio waves and to suppress noise signals.

Abstract: A navigation planning method and apparatus comprising a chart data receiving terminal configured to receive a chart data including position information of one or a plurality of targets; a waypoint receiving terminal configured to receive a plurality of waypoints including a latest waypoint for a navigation route of a movable body; a potential waypoint receiving terminal configured to receive a potential waypoint being movable on the chart; and processing circuitry configured to: determine a position of the potential waypoint as a next waypoint following the latest waypoint, the potential waypoint being movable, wherein the potential waypoint is determined by: receive a current position data of the potential waypoint; receive position information of the plurality of targets located within a predetermined distance from the current position of the potential waypoint; calculate an angle between a first bar and a second bar on the chart, wherein the first bar is to connect the latest waypoint with the potential wa

Abstract: A target monitoring device includes: a data acquiring unit, acquiring image data including a ship observed by an imaging sensor; an image recognizing unit, detecting a region of the ship included in the image data; a distance acquiring unit, acquiring a distance to the ship from an observation position detected by a sensor that is different from the imaging sensor; a course acquiring unit, acquiring a course of the ship detected by the sensor that is different from the imaging sensor; and a ship body length estimating unit, estimating a ship body length of the ship based on a dimension of the region of the ship in a horizontal direction, the distance to the ship, and the course of the ship.

Abstract: An imaging processing device includes an image acquisition module configured to acquire an image obtained by photographing the sky with a camera having a known orientation or slant; a time stamp acquisition module configured to acquire a photographing date and time of the image; a photographing position acquisition module configured to acquire position information of a photographing position of the image; a sun position determination module configured to determine a photographed sun position in the image; a reference sun position acquisition module configured to calculate a reference sun position indicating a sun position determined based on the photographing date and time and the position information; and a camera information identification module configured to determine any one of unknown orientation and slant of the camera based on any one of the known orientation and slant of the camera, the photographed sun position, and the reference sun position.

Abstract: A target monitoring device includes processing circuitry configured to: sequentially acquire an image including a marine view captured by a camera during a panning operation; detect a target included in the image; determine whether or not the detected target is identical to a target registered in a database in which target data of a target detected by a target detection unit different from the camera is registered; and stop the panning operation of the camera with the detected target included in an angle of view, when the detected target is not the target registered in the database.

Abstract: Provided is an information processing method in which: image data that includes time-series radar images is acquired; position data of a first false image candidate is acquired by inputting one acquired radar image into a first training model that outputs the position data of the first false image candidate when one radar image has been inputted; position data of a second false image candidate is acquired by inputting the acquired time-series radar images into a second training model that outputs the position data of the second false image candidate when the time-series radar images have been inputted; and a false image on a radar echo is detected on the basis of the position data of the acquired first false image candidate and second false image candidate.

Abstract: A GNSS receiver includes a demodulation module, a position calculation module, a storage, and a determination module. The demodulation module receives the GNSS signal and acquires a navigation message. The position calculation module performs positioning calculation based on a propagation delay which is a time until a GNSS signal transmitted from a GNSS satellite reaches an antenna. The storage stores reception timing (reference timing) of a message of a predetermined type in the navigation message. The determination module determines that a GNSS signal including the navigation message is a spoofed GNSS signal when the difference between the reception timing of the next and subsequent messages of the same type predicted from the reference timing and the reception timing of the same type of message received after the reference timing is outside the scope of the time threshold.

Abstract: A radar signal processing device is provided. The radar device may include processing circuitry. The processing circuitry is configured to generate a processing signal based on a beat signal of a transmission signal and a reception signal, and generate a plurality of extracted beat signals by applying a plurality of window functions on the processing signal, and convert the plurality of extracted beat signals to amplitude data indicating a relationship between a distance and an amplitude, and integrate a plurality of the amplitude data into integrated data.

Abstract: A target monitoring system includes: a camera, mounted in a ship; a detecting apparatus, mounted in the ship and detecting an actual position of a target present around the ship; an image recognizing unit, detecting an in-image position of the target included in an image imaged by the camera; a distance estimating unit, estimating a range of a distance from the ship to the target based on the in-image position of the target; and a target identifying unit, identifying the target detected from the image and the target detected by the detecting apparatus based on the range of the distance that is estimated and the actual position that is detected.

Abstract: A radar signal processing device includes: a processing circuitry configured to generate a processing signal based on a beat signal obtained from a transmitted signal and a received signal, generate a smoothed signal by filtering the processing signal using a smoothing filter in a time domain; and detect an interference signal included in the beat signal based on the processing signal and the smoothed signal.

Abstract: A display processing device capable of preventing generation of interference when performing voice wireless communications between a plurality of ships, or between a ship and a land station, and making normal voice wireless communications start smoothly, is provided. The display processing device includes a receiver and processing circuitry. The receiver receives a radio wave for voice. The processing circuitry performs a determination of a channel used for propagation of the radio wave for voice and a ship/land determination for determining whether an output source of the radio wave for voice is either one of a ship and a land station. The processing circuitry displays, on a screen indicative of a time-series change in the status of use for every channel that may be used, a result of the ship/land determination for the used channel.

Abstract: A radar image synthesizing device capable of displaying a synthesized image with higher visual recognition based on a plurality of radar images is provided. The radar image synthesizing device includes processing circuitry. The processing circuitry acquires a plurality of radar images based on a measuring result of each of a plurality of radars disposed at different locations. The processing circuitry generates a synthesized image in which the plurality of radar images are synthesized, while using a position at which a product of a beam width of the radar and a distance from the radar becomes equal in a set of at least any two radars, as a boundary between the radar images. The processing circuitry displays the synthesized image.

Abstract: A visibility determination system determines a visibility condition based on an image taken by a camera. The visibility determination system includes: an acquisition part, configured to acquire a first extracted image obtained by extracting an edge of an imaging target in a first image taken by the camera; and a determination part, configured to determine visibility based on the first extracted image and a second extracted image that is obtained by extracting the edge of the imaging target in a second image taken by the camera at a different time from the first image.

Abstract: A ship monitoring device is provided, which includes processing circuitry. The processing circuitry acquires first ship data indicative of a position and a velocity of a first ship. The processing circuitry acquires second ship data indicative of a position and a velocity of a second ship. The processing circuitry determines whether an encounter relationship between the first ship and the second ship is any one of a head-on relationship, a crossing relationship, and an overtaking relationship based on the first ship data and the second ship data. The processing circuitry determines whether at least one of the first ship and the second ship corresponds to a stand-on ship, a give-way ship, or corresponds to neither thereof based on the first ship data, the second ship data, and the encounter relationship.

Abstract: A ship body control device (20, 20A) includes an acquiring part (40) and an estimating part (200, 200A). The acquiring part (40) acquires a ship body state and disturbance information of a ship body (80) on a water surface. The estimating part (200, 200A) generates a first estimated value (?te0, ?te0a, ?te0b) of a trim rudder angle (?tr) to disturbance based on information on a hydrodynamic force of the ship body (80) based on a shape of the ship body (80), and information acquired by the acquiring part (40).