基于激波场张量捕捉的超声速弹丸跟踪

Study on Tracking Supersonic Projectile Based on Capturing Shock Wave Field Tensor

超声速弹丸产生的激波蕴含丰富的运动状态信息。在分析弹丸激波形成机理和建立激波形成前后参数关系的基础上,建立空间张量的激波捕捉三维Euler模型和声信号融合算法,并进行空间谱辨识实验;为实现反演跟踪,结合外场试验背景,提出动态g-h-k滤波跟踪方法,验证激波声场反演跟踪的有效性,为探索弹丸激波场进行弹丸跟踪提供了新方法。

Shock wave of supersonic projectile contains plenty of information about its motion state.Based on the analysis of body of revolution shock wave formation mechanism and establish the relationship model between shock wave formation,the paper establishes the three-dimensional Euler model and fusion algorithm of acoustic signal based on shock capture,and then put into spatial spectrum identification experiment. Compared to background field test,it proposed dynamic g-h-k filter tracking methods to verify the effect of the tracking of the shock wave field inversion. Above all,it proposes a new method of tracking supersonic projectile based on shock wave field.