The mathematical model of reentry maneuvering trajectory is established. The fitting expression of aerodynamic coefficient function on velocity, attack of Angle and altitude is presented.

建立了再入机动弹道数学模型，给出了气动力系数为速度、迎角、高度的函数拟合式，进行了最佳再入机动弹道设计和仿真计算。

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Beeline fitting can keep the part of linearization and the acute Angle of Outlines of previous color blocks.

直线拟合可以保持原色块轮廓中比较线性化的部分和色块图形中的尖锐角部分。

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The range error and drift error are calculated and analysed when the fitting is performed on different firing angle, so that a reasonable fitting region is chosen to decide the firing angle.

对在不同射角下符合时，由射表误差源造成的射程误差和偏流误差进行了计算与分析，论述了符合射角选择的合理区域。

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