雷利多普勒激光雷达的性能评估,具有转移稳定的原子过器,用于热层风的测量
Optics express
|August 13, 2025
概括
一种新的转移稳定的原子过器 (MBAF) 通过消除气溶干扰,显著提高了雷利多普勒激光雷达的精度. 这种先进的激光雷达系统确保精确的热层风场测量,即使在复杂的大气条件下.
科学领域:
- 大气物理学 大气物理学
- 光学遥感器 遥感器 遥感器
- 利达尔技术 利达尔技术
背景情况:
- 气溶干扰在雷利多普勒激光器中扭曲了频率响应曲线.
- 这种干扰会导致热层风速测量的系统性错误,在高反向散射比率下达到6.7m/s.
- 现有的激光雷达系统在气溶丰富的环境中难以准确.
研究的目的:
- 开发和验证雷利多普勒激光雷达系统,以减轻气溶引起的测量误差.
- 为了提高激光雷达性能,引入一个转移稳定的原子过器 (MBAF).
- 为了确保精确的风场测量在热层,尽管大气干扰.
主要方法:
- 在雷利多普勒激光雷达系统中集成一个转移稳定的原子过器 (MBAF).
- 优化电池温度在735K以上以抑制Mie散射.
- 使用气溶激光雷达 (USTC) 和ERA5风速数据的观测数据进行模拟分析.
主要成果:
- 该MBAF有效地抑制了Mie散射,从而在不同的反散射比率上产生一致的频率响应曲线.
- 气溶引起的系统错误被消除,最大风速错误减少到0.6m/s.
- 尽管雷利散射的轻微减弱和SNR的减少,但该系统仍然保持了高精度.
结论:
- 转移稳定的原子波器 (MBAF) 是一个高度有效的解决方案,用于减轻雷利多普勒激光器中的气溶干扰.
- 这项技术在具有挑战性的大气条件下确保可靠和准确的热层风场测量.
- 开发的激光雷达系统为大气遥感提供了显著的进步.
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