We at Lawrence Livermore National Laboratory (LLNL) have developed a new missile guidance law for intercepting a missile during boost phase. Unlike other known missile guidance laws being used today, the new t-delta v guidance law optimally trades an interceptor's onboard fuel capacity against time-to-go before impact. In particular, this guidance law allows a missile designer to program the interceptor to maximally impact a boosting missile before burnout or burn termination and thus negating its ability to achieve the maximum kinetic velocity. For an intercontinental range ballistic missile (ICBM), it can be shown that for every second of earlier intercept prior to burnout, the ICBM ground range is reduced by 350 km. Therefore, intercepting a mere 15 seconds earlier would result in a miss of 5,250 km from the intended target or approximately a distance across the continental United States. This paper also shows how the t-delta v guidance law can incorporate uncertainties in target burnout the, predicted intercept point (PIP) error, the-to-go error, and other track estimation errors. We believe that the t-delta v guidance law is a step toward the development of a new and smart missile guidance law that would enhance the probability of achieving a boost phase intercept.


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    Title :

    Optimal t-Delta v Guidance Law for Intercepting a Boosting Target


    Contributors:
    L. C. Ng (author) / E. Breitfeller (author) / A. G. Ledebuhr (author)

    Publication date :

    2002


    Size :

    10 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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