Furuno Electric Company Limited

Furuno Electric Company, Limted.

Hitoshi Maeno

Masashi Imasaka

Kazuya Nakagawa

Takesi Yamakawa

Chizu Kawasaki

Keisuke Goto

Koji Nishiyama

Yasunobu Asada

Yugo Kubota

Kazuya Kishimoto

Eiji Uchino

Akira Okunishi

Satoshi Adachi

Sae Takemoto

Yuya Takashima

Satoshi Kawanami

Hirohiko Morita

Kazutoshi Shimo

Florian Girault

Jérôme Dubuis

Ryosuke Morigaki

Tomoko Matsumoto

Youichi Maruyama

Masaya Takase

Go Omori

Tomoyuki Matsuyama

Jerome Dubuis

Chizu Inagawa

Kouji Nishiyama

To accurately calculate a location range which a ship is capable of reaching within a prescribed time interval. A signal processing device is configured so as to be equipped with reachable range calculation unitswhich calculate a reachable range, which is the location range a ship is capable of reaching within a prescribed time interval, on the basis of the static information of the ship.

Signal processing device and radar device

In order to accurately identify a target object, a signal processor is provided, which includes an extracting module configured to extract, from echo sample sequences, a plurality of samples caused by the target object as a partial sample sequence, a characteristic amount calculating module configured to calculate a characteristic of the partial sample sequence as a characteristic amount, a memory configured to store a plurality of type-based data that are data as comparison targets of the characteristic amount and correspond to types from which the target object is identified, and an identifying module configured to compare the characteristic amount with each of the plurality of type-based data and, based on the comparison result, identify the target object corresponding to the partial sample sequence for which the characteristic amount is calculated.

Signal processor and radar apparatus

The purpose is to provide a program, method and device for controlling a movable body (e.g., single-propeller single-rudder ship) to move the movable body while keeping it orientated in a given direction. A controlling module may cause the movable body to stay at a fixed point position by controlling a thrust generator and a moving direction adjustor to orient the movable body to a direction of a disturbance estimated by a disturbance direction estimating module so that the movable body is not drifted by the disturbance. Every time the changing module sequentially changes the fixed point position, the controlling module may move the movable body to the changed fixed point position. Thus, the control device of the movable body of this disclosure may sequentially move the movable body while keeping it oriented to the direction of the disturbance.

Program, method and device for controlling movable body

To easily grasp a relationship of parameter values which influence a log velocity of a ship, with the log velocity of the ship caused by the parameters, a ship characteristic estimating device is provided, which includes a data outputter configured to output a plurality of parameter data respectively including rotational speed data of a propeller of a ship, and wind velocity vector data of wind force that may act on the ship, and an estimator configured to receive the plurality of parameter data outputted from the data outputter, estimate values corresponding to the respective parameter data to be log velocity vectors of the ship, and output them as first output values. The rotational speed data are same as each other and the wind velocity vector data are different from each other.

Vessel characteristic estimation device and automatic steering device

A detection device detects a target based on a reception signal obtained from a reflection signal of a transmission signal. The detection device includes a Doppler frequency component generator that acquires a Doppler frequency component that indicates the amplitude level of a reception signal, for at least one Doppler frequency, based on the reception signal, a region identifier that identifies a first region and a second region that is outside the first region, based on the value of the amplitude level and the increase rate in the amplitude level, a second-Doppler frequency component suppressor that suppresses the Doppler frequency component of an unnecessary signal, out of the Doppler frequency component corresponding to the second region, and a combiner that combines the Doppler frequency component corresponding to the first region outputted from the region identifier, and the output of the second Doppler frequency component suppressor.

Detection device, radar device, detection method, and detection program

A moving body control device includes a moving body direction sensor, a position sensor, and processing circuitry. The processing circuitry estimates a direction of disturbance. The processing circuitry sets a target position and a starting position. The processing circuitry controls a propulsion generator and a movement direction adjuster such that a heading direction sensed by the moving body direction sensor is opposite to the direction of the disturbance estimated by the processing circuitry, and when the moving body has been drifted at least a specific distance from the target position, the moving body returns to the starting position, and the heading direction at the starting position is opposite to the direction of the disturbance. The processing circuitry changes the starting position based on a distance between the target position and a position of the moving body sensed by the position sensor.

Moving body control device, moving body control method, and moving body control program

A vehicle control device is provided. The device includes a target bearing calculating module configured to calculate a target bearing of a vehicle based on a direction of a disturbance, a stern bearing calculating module configured to calculate a stern bearing, and a rudder mechanism drive signal determining module configured to determine a rudder angle command so that the stern bearing approaches the target bearing, and determine a rudder mechanism drive signal based on the rudder angle command.

Vehicle control device and method of controlling vehicle

A target object detection apparatus is provided. The apparatus includes a transmitter, a receiver, a threshold determiner, a parameter setter, a parameter selector, and a timing controller. The transmitter repeatedly transmits a transmission pulse at a transmission timing. The receiver receives a reception signal at a reception timing set based on the transmission timing. The threshold determiner determines whether an amplitude value of the reception signal exceeds a predetermined threshold at every sampling point and counts the number of sampling points at which the amplitude value of the reception signal exceeds the threshold. The parameter setter sets a plurality of different parameters for controlling the transmission timing. The parameter selector selects the parameter from the parameter settings, to minimize the number of sampling points counted by the threshold determiner. The timing controller controls the transmission timing, based on the parameter selected by the parameter selector.

Apparatus and method for detecting target object

A target object detection device is provided. The device includes a transmitter for transmitting at least one transmission wave in a predetermined azimuth, an echo signal receiver for receiving echo signals of the transmission waves, an echo signal suppressor for suppressing levels of the echo signals corresponding to sampling positions, a target object detector for detecting the target object(s) based on the level-suppressed echo signals, a first updater for comparing amplitude level(s) of echo signals of sampling positions, with the threshold that is set in association with the first distance, and determining to update the values with a new threshold and a new suppression value, and a second updater for comparing amplitude level(s) of echo signals of sampling positions, with the threshold that is set in association with the second distance, and determining to update the values with a new threshold and a new suppression value.

Target object detecting device and echo signal processing method

This disclosure provides a method of setting a threshold according to a level of an echo signal containing an unused component. The echo signal is generated by transmitting and receiving a radio wave with an antenna while the antenna revolves. The method includes acquiring levels of the echo signals at every predetermined distance interval and updating a threshold set for an observing position based on the level of the echo signal at the observing position, the threshold set for the observing position, and a threshold set for a position closer to the antenna than the observing position by the predetermined distance on the same sweep.

Method, device and program for setting threshold, and method, device and program for detecting target object

This disclosure provides a signal processing device, which includes an echo signal input unit for being inputted with echo signals caused by electromagnetic waves discharged from an antenna and reflected on one or more target objects, an echo signal level detector for detecting a level of each of the echo signals with reference to an azimuth and a distance to the antenna, a level change detector for detecting a level change between the echo signals from locations close to each other, the locations of the echo signals being such that the distances from the antenna are substantially the same but the azimuths are different, a pattern output module for comparing the level change with a predetermined reference pattern and outputting a level change pattern, and a missing determining module for determining a missing of a signal based on at least two of the level change patterns.

Method and device for processing signal, and radar device

An object of the present invention is to provide an automatic steering control apparatus, including an autopilot, which enables a ship to turn around a desired fixed point as a turning center with a desired turning radius without being affected by an extraneous factor, such as a tidal current or the like. To achieve the object, a center position, a turning radius and a turning direction for turning are initially designated by the operator, a tangent to a turning circle at an intersection of a straight line from the turning center to a position of the ship and the turning circle, and a course of the ship is controlled to approach the tangent.

Automatic steering control apparatus and autopilot

This disclosure provides a method of setting a threshold according to a level of an echo signal of an unused component. The echo signals are generated by transmitting and receiving a radio wave with an antenna while the antenna revolves. The method of setting the threshold includes calculating a difference value between a level of the echo signal at an observing position and a level of the echo signal at a position comparatively on the antenna side and close to the observing position, selecting a process for setting a threshold from either one of a first threshold setting process and a second threshold setting process according to the difference value, and updating the threshold for the observing position by using the selected threshold setting processing.

Method and program for setting threshold, and method, program and device for detecting target object

This disclosure provides a signal processing device, which includes an echo signal input module for being inputted with echo signals caused by electromagnetic waves emitted from an antenna being reflected on one of more target objects, an echo signal level detecting module for detecting a level of each of the echo signals in association with a distance and an azimuth direction from the antenna, a level change detecting module for detecting a level change between the echo signals from locations which are close to each other where the distances from the antenna are substantially the same but the azimuth directions from the antenna are different, a pattern output module for comparing the level change with a pattern determined in advance to output a level change pattern, and an interference determining module for determining interference based on at least two of the level change patterns.

Method and device for processing signal, radar apparatus, and program for processing signal

This disclosure provides a target object detection signal processing device, which includes a reception data output module, to which a reception signal is inputted, for outputting reception data indicative of a signal level of the reception data, a scan-to-scan correlation processing module for performing scan-to-scan correlation processing between the reception data and previous reception data indicative of a reception level of previously acquired reception signal to output scan-to-scan correlation data, and an output selection module, to which the reception data and the scan-to-scan correlation data are inputted, for selectively outputting either one of the data.

Growing community of inventors

Nishinomiya, Japan

Hitoshi Maeno