目标拦截的导引方法与仿真模拟

本文对目标拦截的导引方法进行了研究和模拟，是项目“军事指挥实时动态真实感模拟系统ＲＤＭＳＳ”的目标拦截模拟部分，主要内容是：对导弹的导引弹道进行了分析和模拟，并提出用样条预测的新方法进行目标导引；给出了模拟爆炸和火焰喷射的简易方法；最后在ＳＧＩ／Ｉｎｄｉｇｏ２上实现了一个简单的仿真模拟系统，对飞机的飞行、导弹及反导弹的发射和拦截过程作了成功的模拟，取得了良好的效果．     

Invertible substitutions and Sturmian sequences

It is known on the one hand that a Sturmian sequence can be generated geometrically by the intersections of a straight line with the unit grid in the plane, and on the other hand that fixed points of invertible substitutions are Sturmian. We give a new characterization of invertible substitutions, which allows to determine the straight line which generates the fixed point of a given invertible substitution.