本文采用数字仿真技术研究大气层外与高空大气层内导弹对再入体的拦截。当采用连续制导与滤波时，仅测量角度和寻的过程的几何关系使得拦截弹的观测力下降，以及精确制导与滤波器发散的矛盾，因此，文中采用一种“间歇机动”的制导方案与一种叫做“修正增益伪测量滤波器”的方案，通过大量的数字仿真，证实了该方案可有效地拦截大气层外或高空大气层内飞行的再入体，克服了连续制导与滤波难以解决的命中目标问题。 In this paper, we use digital simulation technology to study the interception of reentry bodies by the missiles in the atmosphere and in the upper atmosphere. When using continuous guidance and filtering, only the geometric relationship between the angle and the seeking process makes the observation of the interceptor drop, and the conflict between the exact guidance and the filter divergence. Therefore, a “intermittent maneuvering” guidance scheme and A scheme named “Modified Gain Pseudo-Measurement Filter” proved by lots of digital simulations that this scheme can effectively intercept the reentry of the flight outside the atmosphere or in the upper atmosphere, and overcomes the unmanageable hits of continuous guidance and filtering Goal problem.