基于弹群干扰环境的弹丸激波分离

An Projectile Shock Separation Based on Cluster’s Interference Environment

弹丸对空射击时在目标区附近常常形成弹群环境,从中提取弹丸激波信息为一大难题。在分析弹丸激波形成和弹群环境干扰影响的基础上,提出将弹群干扰分解为线性和非线性研究,通过将弹丸激波的相遇问题分解为外场问题和内场问题,研究了虚设映像面的等效声源激波分离方法。通过对弹丸空中激波声压幅值、相位、幅值散射点等参数进行捕获和仿真。结果显示,谱峰鲜明,分辨力好,声压、相位刻画得比较细致。

It is often formed cluster environment when projectile firing against air targets,and from the cluster to extract projectile shock information as a major problem.Based on the analysis of the impact of projectile shock wave and the environmental impact of the projectiles,the method of decomposing the projectiles into linear and nonlinear is proposed.The problem of shock wave encounter is decomposed into the outside problem and the interior problem,the method of shock wave separation based on image plane and virtual sound source is studied.The parameters such as the amplitude,phase and amplitude of the sound pressure in the air shock wave of the projectile are simulated and captured.The results show that the spectral peaks are distinct,the resolution is good,and the sound pressure and phase are described in detail.