激光器出口散射测试和影响分析

Scattering energy in laser emergence test and affect analysis

介绍了激光制导半实物仿真中1064 nm激光散射微弱能量的测试方法。并对某激光器出口散射进行了测试分析,总结了其分布规律,并建立模型。结果表明,激光器出口散射角度较广,且在近场散射能量比大气气溶胶散射能量高几倍,而远场时散射能量又明显低于大气气溶胶散射能量。因此,在近场仿真实验中,需要采取光阑遮挡等相应措施,合理处理出口散射激光,这对增大仿真实验测量的可控可知性具有重要意义。

A test method of 1064 nm laser scattering weak energy in laser-guided halfware in the loop simulation was introduced in this paper.The scattering energy in emergence of a certain type of laser was tested and analyzed.The distributing rule of scattering energy was summarized and the simulation model was established.The results show that in near field the laser′s scattering energy is some times larger than which scatted by aerosols and the scatterly angel is wide.But in the far field,the laser′s scattering energy is significantly lower than which scatted by aerosols.Therefore some measures such as aperture blocking must be taken to deal with scattering energy in emergence in near field simulation test and it′s of great significance to reduce the measurement error.