The GAPS (Global underwater and marine Positioning System, launched by iXSea, includes a 3D acoustic antenna, a FOG (Fiber Optic Gyroscope)-based INS (Inertial Navigation System and electronic boards for GPS (Global Positioning System) integration, data fusion, and algorithms. GAPS is a multiple-system, which can simultaneously provide the positions of a surface vessel and several subsea vehicles, including a number of divers. The system can be applied for precise towfish positioning due to the tetrahedral design of the acoustic antenna and can be installed on a buoy with a radio link for riser monitoring. At the core of GAPS-INS is the IMU (Inertial Measurement Unit (IMU), composed of three FOG and three accelerometers mounted on orthogonal axes. The FOGs provide the instantaneous rotation of the system and the accelerometers provide instantaneous acceleration of the system. The FOG itself contains a fiber coil, a light source, and a coupler, while GAPS's INS algorithm consists of inertial computation and Kalman filter. GAPS sends a command either acoustically or through a cable to obtain the position of an acoustic transponder which replies by emitting an acoustic chirp. GAPS has the ability to solve the subsea positioning problem in many situations where other systems have failed.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    GAPS: The global underwater and marine positioning system


    Additional title:

    GAPS: Das weltweite System der Positionsbestimmung von Unter- und Überwasserfahrzeugen


    Contributors:

    Published in:

    Sea Technology ; 46 , 6 ; 51-54


    Publication date :

    2005


    Size :

    4 Seiten, 3 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    UNDERWATER POSITIONING SYSTEM AND UNDERWATER POSITIONING METHOD

    KAWADA RYOICHI / NISHITANI AKIHIKO / KOJIMA JUNICHI et al. | European Patent Office | 2023

    Free access



    UNDERWATER DRIFT TRACKING SYSTEM BASED ON MARINE POSITIONING PLATFORM

    LEE MOON JIN / KIM TAE SUNG / KIM YONG MYUNG | European Patent Office | 2023

    Free access

    Underwater positioning subsurface buoy and underwater positioning system

    HUANG MINYAN / FENG HAIHONG / FU JIANHUA et al. | European Patent Office | 2023

    Free access