Furuno Electric Company Limited

Sadao Sato

Masaru Fukuda

Hiroyuki Toda

Tadahiro Miichi

Koji Hayashi

Daisuke Matsumoto

Kaoru Nakayama

Koya Satoh

A touch panel device includes a display unit and a controller. The display unit displays, on a map or a nautical chart, a position acquired from a GNSS sensor and a symbol set on the map or the nautical chart. The controller controls, when an operation of specifying the symbol is detected, an auxiliary tool to appear on a display screen of the display unit, the auxiliary tool for recognizing a touch operation of moving the symbol.

Device having touch panel, radar apparatus, plotter apparatus, ship network system, information display method and information display program

A GPS-Based ADS for determining attitude and heading of a moving body comprises a GPS receiver, an inertial sensor unit, a blockage area calculator, a sensor anomaly detector and a monitor. The GPS-Based ADS provides information useful for making a judgment on appropriateness of installation sites and mounting conditions of a GPS antenna and inertial sensors based on blockage area information concerning each satellite signal blockage area obtained by the blockage area calculator and sensor signal anomaly information concerning each inertial sensor anomaly obtained by the sensor anomaly detector.

GPS-based attitude determination system with self-diagnosis function

A carrier phase-based relative positioning apparatus comprises a plurality of antennas of which at least one is installed on a mobile unit. The apparatus determines the position of each antenna other than one antenna used as a reference antenna relative to the reference antenna by receiving radio signals transmitted from a plurality of position-fixing satellites with the multiple antennas, observing a single difference phase or a double difference phase, and calculating an integer ambiguity of the single difference phase or the double difference phase. The apparatus judges that the integer ambiguity has been incorrectly determined if the position of any of the antennas relative to the reference antenna (or the angle of a flat plane formed by those two antennas) falls out of a preset range in which the relative position (the angle of the flat plane) falls under normal conditions.

Carrier phase-based relative positioning apparatus

A system for determining the heading and/or attitude of a body receives radio waves from a plurality of position-fixing satellites using at least three antennas fixedly mounted at different positions of the body. To reliably obtain integer ambiguity solutions of carrier phases of the radio waves in a shorter time, the system directly determines integer ambiguities from attitude angle data obtained by an IMU attitude processing section when the integer ambiguities are to be redetermined in the event of an interruption of the received radio waves or a change in the combination of satellites to be used. This system provides a user with highly accurate uninterrupted heading and/or attitude angle information.

Growing community of inventors

Nishinomiya, Japan

Sadao Sato