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激光距离多普勒成像技术在航天和国防应用领域受到极大的关注.文章建立了锥柱复合目标的激光距离多普勒像分析模型,包括底面的贡献.该模型能分析锥柱复合目标的几何参量、表面粗糙度、姿态、角速度和脉冲宽度等因素对激光距离多普勒像的影响,并能退化到圆柱和圆锥的激光距离多普勒像分析模型,也能退化到平面波下的多普勒谱分析模型.分析了几何参量和姿态对距离多普勒像的影响.计算结果表明,锥柱复合目标距离多普勒像能体现出目标的几何形状和姿态信息.理论和测量相结合,该分析模型能用来进行圆柱、圆锥及锥柱复合目标物理和几何参量的识别,其解析表达式对于多普勒速度计和激光雷达应用有着重要的意义.
Laser distance Doppler imaging technology has received great attention in aerospace and defense applications.In this paper, the laser distance Doppler image analysis model of cone target is established, including the contribution of the bottom surface.This model can analyze the effect of cone target Geometric parameters, surface roughness, attitude, angular velocity and pulse width and other factors on the laser range Doppler image, and can degenerate to the cylindrical and conical laser range Doppler image analysis model can also degenerate to more than the plane wave Doppler spectral analysis model. The influence of geometric parameters and attitude on distance Doppler image is analyzed. The calculated results show that the cone-shaped composite target distance Doppler image can reflect the target’s geometric shape and attitude information. The combination of theory and measurement The analysis model can be used to identify the target physical and geometric parameters of the compound cylinder, cone and cone. The analytical expression is of great significance to the application of Doppler velocimetry and lidar.