The subject of this paper is the application of extremal field guidance to the covariance analysis of low thrust retargeting guidance. The general procedure for low thrust navigation analysis is briefly reviewed. The basic equations of trajectory optimization and extremal field guidance are presented with emphasis on the low thrust problem. The adopted formulation includes thruster on-off times as control variables and accounts for the effects of model parameter variations. A method of solution of the guidance equations is outlined; and the application of the solution in a covariance analysis, including a procedure for the treatment of model parameter variations as either biases or first order Gauss-Markov stochastic processes, is discussed.


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    Title :

    An application of extremal field guidance in statistical low thrust guidance analysis


    Contributors:

    Conference:

    Astrodynamics Conference ; 1980 ; Danvers, MA


    Publication date :

    1980-08-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English