Abstract: A transceiver system of a pulse signal is provided with a transmission signal generator configured to generate a transmission signal, a transceiver configured to transmit a pulse signal corresponding to the transmission signal and receive an echo signal corresponding to the transmission signal from a detection range, a pulse compression filter configured to compress the echo signal received by the transceiver, and an echo-stretch filter configured to stretch the compressed echo signal with a group of weight elements being set larger for a center and being set smaller for edge sides in a depth direction.

Abstract: A positioning device can include a receiver, a positioning processor, an individual accuracy index calculator, and an integrated accuracy index calculator. The receiver can receive positioning signals from a plurality of positioning satellites SAT. The positioning processor can perform positioning calculation using the received positioning signals. The individual accuracy index calculator can calculate a plurality of different individual accuracy indexes based on an error covariance matrix used for the positioning calculation, a carrier phase by the positioning signal, and a positioning result by the positioning calculation, respectively. The integrated accuracy index calculator can calculate an integrated accuracy index using the plurality of individual accuracy indexes.

Abstract: The disclosure discloses a target tracking apparatus for tracking a target on the water, and is provided with an echo data acquiring interface which acquires echo data indicating a correspondence relationship between a position in the detection target area and a level of reflected waves reflected by electromagnetic waves transmitted through an antenna at the position. A tracking processor configured to track a target based on the echo data. A tracking restriction area setting unit configured to set a tracking restriction area that specifies a region where the level of the reflected wave is equal to or greater than a threshold level based on the echo data. Thereafter, the tracking processor tracks the target based on the echo data in the area outside the tracking restriction area.

Abstract: The disclosure discloses a target tracking apparatus for tracking target on the water of the invention is provided using. An echo data acquiring interface is configured to acquire echo data indicating a correspondence relationship between a position in the detection area and the level of the reflected wave at which the electromagnetic wave transmitted through the antenna is reflected at the position. A target extracting unit is configured to extract a potential target based on the echo data. A fluctuation value calculator is configured to calculate a fluctuation value indicating the fluctuation of the potential target based on the acquired echo data of the potential target at each timing acquired the echo data. The tracking processor is configured to determine a target to be tracked based on the fluctuation value and track the target.

Abstract: A GNSS receiver includes at least two antennas, a satellite direction acquisition module, an estimation module, and a determination module. A satellite direction acquisition module acquires the direction when viewing the satellite corresponding to the GNSS signal received by the antenna based on the satellite orbit information. The estimation module estimates the arrival direction of the GNSS signal on the basis of the difference in timing when the GNSS signal is received by the plurality of antennas. The determination module compares the direction in which the satellite is viewed from the antenna with the arrival direction estimated by the estimation module to determine whether the GNSS signal received by the antenna is a direct GNSS signal based on a direct wave from the satellite or an NLOS GNSS signal.

Abstract: The present disclosure provides a target object detection device. The target object detection device includes a first transmission signal generator, a first transmission array, a first switch, and a controller. The first transmission signal generator is configured to generate a first transmission signal. The first transmission array includes a plurality of first transmission elements configured to convert the first transmission signal into a transmission wave. The first switch is configured to supply the first transmission signal to one of the first transmission elements in the first transmission array. The controller is configured to control the first switch to switch the first transmission element to which the first transmission signal is supplied from a first element to a second element at a first timing.

Abstract: An automatic tuning device is mounted on a magnetron radar including a mixer that down-converts a reception wave. The automatic tuning device includes processing circuitry configured to: output a tuning control voltage for adjusting a frequency of a carrier signal provided to the mixer; acquire a tuning indication voltage indicating an intensity of a component of a particular frequency in an output signal of the mixer; set a reference value based on a particular range including therein a first level that is the tuning control voltage corresponding to a maximum of the tuning indication voltage in a first period; calculate an index value based on a scanning result of a first range comprising including the first level in a second period; and determine the output tuning control voltage based on a comparison result between the index value and the reference value.

Abstract: A disturbance estimation apparatus including a navigation data receiver, a thrust data receiver, and processing circuitry is provided. The navigation data receiver acquires navigation data including an actual position and time of the ship on a water surface. The thrust data receiver receives thrust data indicating a magnitude and a direction of a thrust force of the ship. The processing circuitry estimates a predicted position of the ship at a future point in time and a predicted arrival time of the ship to reach the predicted position by inputting the navigation data and the thrust data into a first trained model, and determines disturbance data including a drift direction and drift speed of the ship drifted by an external force based on a difference between the predicted position estimated by the first trained model and the actual position of the ship at the predicted arrival time.

Abstract: The present disclosure measures an attitude even when an antenna cannot receive a positioning signal a receiver cannot acquire positioning information from the signal. An attitude measuring device includes: antennas, receivers, and processing circuitry. The antennas receive positioning signals and output reception signals, respectively. There are four or more antennas. The receivers are provided for the respective antennas and output positioning data containing a carrier phase based on the reception signals. The processing circuitry calculates the position of each antenna using the relevant positioning data, estimates a reception state of the positioning data based on the calculated position, and selects between a first attitude calculation mode using four or more positioning data with a good reception state and a second attitude calculation mode using three or less positioning data with the good reception state. The processing circuitry calculates an attitude using the selected attitude calculation mode.

Abstract: A ship information exchange device capable of reducing a demodulation processing load is provided. The ship information exchange device includes a receiver, a generator, a detector, and a demodulator. The receiver receives a radio signal. The generator generates reception data of a plurality of channels used for transmission of ship information based on the radio signal. The detector detects a reception level of each of the channels. The demodulator demodulates the reception data. The demodulator determines the reception data to be demodulated according to the detection result of the reception levels.

Abstract: The present disclosure is to provide a measurement chip, a measuring device, and a measuring method which can accurately estimate an analyte concentration with a simple configuration. A measurement chip may include a propagation layer, an introductory part, a drawn-out part and a reaction part. Through the propagation layer, light may propagate. The introductory part may introduce the light into the propagation layer. The drawn-out part may draw the light from the propagation layer. The reaction part may have, in a surface of the propagation layer where a reactant that reacts to a substance to be detected is formed, an area where a content of the reactant changes monotonously in a perpendicular direction perpendicular to a propagating direction of the light, over a given length in the propagating direction.

Abstract: An observation signal generation device includes a local signal generator, a first mixer which mixes an RF signal to be observed with the local signal and outputs a first IF signal, a second mixer which mixes the RF signal and the local signal and outputs a second IF signal, an first IF filter which includes a first intermediate frequency obtained by subtracting a frequency of the local signal from a first frequency of the RF signal in a passband, includes a second intermediate frequency obtained by subtracting a frequency of the RF signal from the frequency of the local signal in an attenuation band, and filters the first IF signal to generate a first observation signal, and an second IF filter includes the first intermediate frequency in the attenuation band and the second intermediate frequency in the passband, and filters the second IF signal to generate a second observation signal.

Abstract: A ship control device is provided with an input unit capable of acquiring operation inputs from each of a first operator used in a low-speed navigation control mode and a second operator used in a high speed navigation control mode, and a control unit for determining a target direction and a throttle opening in the direction control at the time of navigation based on the operation inputs acquired in the input unit. The low-speed navigation control mode has a manual operation control mode by the operation of the first operator and an automatic navigation control mode for holding a direction or a throttle opening using the target direction. The control unit is provided with a setting unit for setting the target direction and the throttle opening used for automatic navigation based on the operation input to the first operator in the automatic navigation control mode.

Abstract: A route editing assistance device for editing a first route is provided. The route editing assistance device includes an input interface, and processing circuitry. The input interface is configured to accept position information indicating positions of a first set of waypoints representing the first route. The processing circuitry is configured to accept position information indicating positions of a second set of waypoints, wherein the second set of waypoints defines a second route, and generate display data for simultaneously displaying the first route and the second route on a display.

Abstract: A slot array antenna includes a waveguide and a horn. The waveguide has a first surface including multiple slots arranged along a longitudinal direction of the first surface to radiate radio waves. The width of the first surface in the lateral direction is greater than half of a wavelength of the radio waves. The horn, fixedly attached to the waveguide, enlarges towards a radiation direction of the radio waves. The horn has upper and lower portions bent inwards twice with respect to a lateral direction of the first surface to form first and second narrow openings. An opening width of the first narrow opening is less than the width of the first surface. An opening width of the second narrow opening is less than or equal to two fifth of the wavelength. Thus, a side lobe generated due to horizontal polarization of the radio waves is suppressed.

Abstract: A route planning apparatus is provided for planning a navigation route of a ship. The route planning apparatus includes a display to display a chart on a screen; and an operation interface configured to designate a position in the screen. In addition, the route planning apparatus includes a storage configured to store one or more potential base points that may be a potential base point of a waypoint; a processing circuitry configured to: set a waypoint on the chart in response to a navigator's operation; extract the base points within a predetermined range of the set waypoint as a reference from the storage; and a determine the extracted potential base point to be the base point of the set waypoint.

Abstract: The present disclosure is to provide a measurement chip, a measuring device, and a measuring method which can accurately estimate an analyte concentration with a simple configuration. A measurement chip may include a propagation layer, an introductory part, a drawn-out part and a reaction part. Through the propagation layer, light may propagate. The introductory part may introduce the light into the propagation layer. The drawn-out part may draw the light from the propagation layer. The reaction part may have, in a surface of the propagation layer where a reactant that reacts to a substance to be detected is formed, an area where a content of the reactant changes monotonously in a perpendicular direction perpendicular to a propagating direction of the light, over a given length in the propagating direction.

Abstract: The solid-state radar device includes: a transmission/reception unit configured to transmitting and receiving radio wave signals comprising a modulated signal and a non-modulated signal, which are pulse signals whose frequencies are different from each other; a frequency filter unit configured respectively to extract the modulated signal and the non-modulated signal from the received radio wave signals based on the frequencies; a pulse compression unit generating a pulse-compressed signal by pulse-compressing the modulated signal; a first echo image generation unit configured to generate a first echo image based on the non-modulated signal and the pulse-compressed signal; a wave analysis unit configured to analyze ocean wave information based on one of the non-modulated signal and the pulse-compressed signal; and a display signal generation unit configured to generate a display signal comprising the first echo image and/or the ocean wave information.

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.