The inertial guidance system used in a satellite launching vehicle basically consists of an onboard guidance computer system and an inertial sensor unit which contains three accelerometers and three gyros. It is necessary for an onboard guidance computer to have functions for computing current position, velocity and attitude of the vehicle, so called navigation computation using outputs from the inertial sensors, and also a function for computing the guidance command to guide the vehicle to an orbit injection point. In this paper a new algorithm for a strapdown inertial guidance system which satisfies the requirements is presented. A high accuracy flight trajectory analysis program for satellite launch vehicles was also developed for the purpose of evaluating the performance of the onboard guidance software and it is combined in the evaluation software system. A summary of the composition and functions of the evaluation system is presented. Evaluation results indicating the degree of navigation accuracy are also shown.


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    Titel :

    Strapdown Inertial Guidance System: Onboard Software and Its Evaluation


    Beteiligte:
    K. Otubo (Autor:in) / M. Oguchi (Autor:in) / K. Nitta (Autor:in) / H. Mori (Autor:in)

    Erscheinungsdatum :

    1983


    Format / Umfang :

    62 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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