The trajectory correction technique for large caliber projectiles is an advanced technique formunitions with low cost and great ballistic dispersion reduction. A lot of research associatedwith the trajectory correction technique has been conducted over the past several years.Among those work, it is of interest to learn to how to identify the characterized ballisticparameters and predict the successive trajectory and impact point for a projectile accordingto the real-time measured flight states during a portion of trajectory. It is also the importantbasis and necessary computational tool for the trajectory correction. In addition, for the onedimensionaltrajectory correction projectile, to realize the timely trajectory correction, itrequires that an initial lead of range should be added to the basic range of target and thecorresponding firing element (i.e., the elevation angle) can be determined. In this case, thedetermination and variation law of the initial lead of range for different elevation anglesought to be analyzed in detail at first. This article studies a new method of trajectoryprediction based on the theory of Kalman filtering and the technique of parametersidentification. And the problem associated with how to select the initial lead of range for thepredetermined target is also discussed by virtue of analytical and numerical analyses. Theresearch content reported in this paper is able to provide useful guide for the application ofthe trajectory correction technique for large caliber projectiles.
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