对改进的“烈火2”型导弹进行电磁仿真,根据弹道类目标在空中的动力学模型及飞行姿态控制技术,模拟了弹道类 目标在中段飞行过程中的雷达散射截面回波序列,通过对雷达散射截面序列的微动特性分析,进行真假弹头目标识别。 文中指出传统傅里叶变换在非平稳周期序列分析中的不足,并提出了一种改进周期序列分析方法,该方法能克服傅里叶 变换的不足,在应用于非平稳、复杂噪声背景下的弹道类目标雷达散射截面序列分析时,能有效的提取微动特征,从而实 现对真假弹头的辨识问题。最后通过仿真实验验证了非平稳周期序列分析方法的可行性与有效性。

This paper presents the simulation results of radar cross section (RCS) echo sequence of a missile in its intermediate trajectory that has been obtained through electromagnetic simulation of an improved “Blaze-2”missile. The RCS echo sequence of the missile is simulated by dynamic air flight model and gesture control. The paper implies the shortage of the fourier transformation, which can't obtain the period of non-stationary sequence effectively. The Micromotion characteristics of the missile have been extracted by using the non-stationary periodical sequence analytical method proposed, which can improve the performance of the fourier transformation when using it in non-stationary and heavy noised sequence. Finally, the effectiveness of the method for the target type is validated via simulated experiment.