Scheimpflug原理
光学
激光雷达
入射角(光学)
信号(编程语言)
探测器
消光(光学矿物学)
大气(单位)
摩尔吸收率
遥感
物理
材料科学
气象学
计算机科学
地质学
角膜
程序设计语言
作者
Siying Chen,Jiarui Yin,He Chen,Wangshu Tan,Pan Guo,Yurong Jiang,Qingyue Xu,D. Li,Fan Xue,Huiyun Wu
出处
期刊:Applied Optics
[Optica Publishing Group]
日期:2024-05-22
卷期号:63 (17): 4668-4668
摘要
Wide-incidence-angle detection in Scheimpflug lidar causes pixel-wise variations in signal intensity due to differences in quantum efficiency across the detector. This study proposes an angular response correction factor and a correction method to address the difference caused by a wide incidence angle. A Scheimpflug lidar system was developed with a 405 nm laser and an array image sensor; it achieved a detection angle of 11.4°. Experiments with uniform atmosphere and smoke aerosols demonstrated the effectiveness of the correction method. For uniform atmosphere, it ensured consistent signal intensity. In smoke aerosol detection, the Klett method revealed the correction factor’s role in counteracting small-scale variations in the extinction coefficient. The method improved the extinction coefficient accuracy within 4 m by 4%–75%.
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