弹道设计中定位定向坐标对精度影响研究

Research on the Effect of the Selection of Orientation and Direction Coordinate in Trajectory Design the Accuracy

提出了地地导弹弹道设计中定位坐标和定向坐标的选择原则以及与导弹实际发射过程中制导系统定位定向的匹配关系，在此基础上导出了弹道设计中定位定向坐标应用的数学模型。同时还分析了目前选用的定位定向坐标存在的问题及对命中精度影响的原理，并针对不同射程进行了数值计算，给出了定位定向坐标选择不当对命中精度影响的量级。

In this paper, the select principle of direction and orientation coordinate in trajectory design of the ground to ground missile and the macthing relations of the control and guide system's direction and orientation in the factual blast off process of the missile are put forward. What'more, a mathematics model of direction and orientation coordinate in the trajectory design is deduced. At the same time, the author analyzes the problems which exist in the choose of direction and orientation coordinate at present and illustrates the element which works on the impact accuracy.In allusion to the distinct range, the numerical calculation is processed. The quantity of the effect on the impact accuracy which is caused by the improper selection of the direction and orientation coordinate is presented.