助推段防御比例导引法研究

基于助推段防御和比例导引法,分析了拦截弹与目标导弹的相对运动关系并给出了比例导引方程;采用差分法分析了拦截弹与目标导弹的位置关系、构建了数学模型并推导了拦截弹的差分方程;以拦截时间和拦截弹道为研究对象,分析了拦截弹的速度和比例系数对拦截时间和拦截弹道的影响,并对比例导引法的拦截弹道进行了三维仿真。仿真结果表明,助推段防御使用变系数比例导引法,可有效缓解拦截时间与拦截弹机动性之间的矛盾。

Research on the proportional guidance law for boost phase defense

This paper analyzes the relative motion between interceptor and target missiles based on boost phase defense and proportional guidance law and presents the proportional guidance equation.Location relationship between interceptor and target missiles is analyzed,the mathematical model is built and the difference equation of the interceptor missile is derived based on the difference method.Effect of interceptor speed and proportional coefficient on intercept time and intercept trajectory is analyzed with the intercept time and intercept trajectory as the research object and 3-dimensional simulation is conducted for interceptor missile using proportional guidance method.Simulation results show that the proportional guidance method with variable coefficient used in the boost phase defense can ease the contradiction between the intercept time and interceptor missile maneuverability.