A local representation of gravity anomaly along flight trajectory ballistic missile based on the net function approximation theory and an "infundibular tunnel" generated warping a standard trajectory is proposed. Even trading exactness against computational burden, the results achieved by the proposed method have sufficient precision for trajectory calculation. Being compared with 1080-order spherical harmonics, it takes just about one-thirtieth onboard computational time and needs only about 1000 data memorized to complete the gravity anomaly computation for a 12,000 km range trajectory, with an average approximation error of about 10^sup -2^ mgal and a consequent ballistic impact error beneath 8 m. The modest memory requirement and vastly decreased computational time allow this method to apply to onboard computations of gravity anomaly along any trajectory.


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    Title :

    Fast local representation of gravity anomaly along flight trajectory




    Publication date :

    2016



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    55.50 Luftfahrzeugtechnik / 55.60 Raumfahrttechnik
    Local classification TIB:    275/7040



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