The motion of ballistic missiles in the Midcourse Phase was analyzed and modeled.Then the relationship between the precession period of missile warhead and its RCS sequence was discussed.

• 首先建立了弹道导弹中段目标的进动模型，分析了目标RCS回波数据与进动周期的关系表达式，然后给出了利用目标RCS序列估计进动周期的方法。