摘要
目前,声学精度靶测量时,一般都要求射击弹道线和靶面垂直(交角≤0.25°),否则会带来系统误差。实际测量中,通常很难保证弹道线垂直于靶面。基于激波理论,在三维空间中建立弹丸激波圆锥曲面数学模型。根据激波曲面掠过传感器阵列的时间差,提出了一种针对弹丸斜入射时的弹着点定位模型。该模型在三维空间中求解弹着点坐标,以及弹道线的俯仰角α和水平角β。利用该数学模型进行仿真研究,实验结果表明,该定位模型在斜入射时具有较高的精度。
At present, in the acoustic accuracy target measurements, it is generally required that the ballistic line and the target surface are perpendicular （Angle of intersection≤0.25°）, otherwise, the system will bring the error. In actual measurements, it is often difficult to ensure that the ballistic line is perpendicular to the target surface. Based on the theory of shock wave, a mathematical model of bullet shock wave cone surface is established in three-dimensional space. According to the time difference of the shock wave surface passing through the sensor array, this paper presents a meth- od of positioning the bullet point for the projectile oblique incidence. The model solves the coordinates of the bullet point in the three-dimensional space, and the pitch angle a and the horizontal angle ~ of the ballistic line. The simulation exper- imental results show that the proposed model has high accuracy in oblique incidence. Keywords： shock wave cons oblique incidences acoustic targets model simulation
作者
李健
雷鸣
贺养养
Li Jian;Lei Ming;He Yangyang(Xi＇an University of Technology, Xi＇an 710021, China)
出处
《国外电子测量技术》
2017年第11期124-128,共5页
Foreign Electronic Measurement Technology
基金
西安工业大学科研创新团队建设计划项目资助
关键词
激波锥面
斜入射
声学靶
模型仿真
shock wave con
oblique incidence
acoustic target
model simulation
