距离选通条件下的三维建模仿真算法

Three-dimensional modeling and simulation algorithm under range-gated conditions

由于实验条件及实验手段的局限性,针对空间目标难以经常进行天基实验,建立了距离选通条件下基于物理模型的三维目标激光主动成像仿真方法。首先将系统各部分分解并逐个分析,分别建立了激光光束传输模型、目标三维模型、非相干成像模型、ICCD成像模型,然后根据激光及光学系统参数、ICCD参数仿真了空间目标的二维时间切片图像,最后根据二维切片仿真图像序列实现了距离选通条件下的三维目标成像仿真。仿真结果表明:通过二维仿真图像序列控制不同的距离选通条件,可以完成对目标不同精度的三维重建,能为将来的实验研究提供重要的指导依据。

Because of the limitation of experimental condition and experimental method to complete the space-based experiment problems, a three-dimensional of laser active imaging simulation method was established based on the physical model. Each part of the system was analyzed. The laser beam transmission model, target three-dimensional model, incoherent imaging model and ICCD imaging model were established respectively. Then two-dimensional time slice image of space target was simulated according to the laser and optical system parameters, ICCD parameters. Finally, the 3D imaging of range-gated conditions was simulated based on the two-dimensional slice simulation image sequences. The experiment shows that three-dimensional reconstruction of the target with different accuracy can be completed by through the two-dimensional simulation image sequence and different control range gating condition. The 3D simulation model provides important guidance for future experimental studies.