激光穿越大气层时的折射误差研究

• 作 者: 路远 凌永顺 聂劲松
• 机 构: 电子工程学院科研部,电子工程学院科研部,电子工程学院科研部 安徽合肥 230037 ,安徽合肥 230037 ,安徽合肥 230037
• 出 处: 红外与激光工程
• 发表日期: 2003年01期
• 关键词: 激光器 大气折射 误差修正

利用地基激光器攻击大气层外目标时,需修正大气折射对激光传输的影响。大气折射指数随高度变化,会发生折射效应。由Snell定律出发,研究了激光穿越大气层时的折射误差。通过实例,计算了折射误差与激光束初始仰角的关系,计算结果表明,低仰角时折射误差大,高仰角时折射误差小。最后提出了攻击卫星时误差修正需考虑的问题。

When using ground-based lasers to attack extraterrestrial targets, the effects of atmospheric refraction on laser transmission need to be corrected. Atmospheric refractive index changes with height, refractive effect occurs. Based on Snell’s law, we study the refractive error of the laser passing through the atmosphere. The relationship between the refractive error and the initial elevation angle of the laser beam is calculated by an example. The calculation results show that the refractive error is high at low elevation angles and the refractive error is small at high elevation angles. Finally, the issue of error correction when attacking satellites needs to be considered.