{"title":"Optimization analysis of gate width for detecting atmospheric turbulence with differential image motion LiDAR","authors":"Hui Zhou, Chenbo Xie, Yalin Hu, Fahua Shen, Kunming Xing, Yingjian Wang, Bangxin Wang","doi":"10.1007/s00340-024-08307-9","DOIUrl":null,"url":null,"abstract":"<div><p>Through theoretical calculations and field experiments, the setting of gate width in distance gating technology has been optimized in DIM LiDAR. The mathematical relationship between gate width and detection distance has been derived. The relationship curves between gate width and image signal-to-noise ratio(SNR), as well as gate width and atmospheric refractive index structure constant <span>\\(C_n^2\\)</span> were obtained. The results indicate that at a constant detection distance, there is a gradual increase in the SNR of the image with increasing gate width, followed by a saturation point. The higher the SNR, the closer the inverted <span>\\(C_n^2\\)</span> is to the ultrasonic anemometer. Meanwhile, if the SNR is similar, the inverted <span>\\(C_n^2\\)</span> is similar. Finally, the appropriate gate width for this system is given.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":null,"pages":null},"PeriodicalIF":2.0000,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics B","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1007/s00340-024-08307-9","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Through theoretical calculations and field experiments, the setting of gate width in distance gating technology has been optimized in DIM LiDAR. The mathematical relationship between gate width and detection distance has been derived. The relationship curves between gate width and image signal-to-noise ratio(SNR), as well as gate width and atmospheric refractive index structure constant \(C_n^2\) were obtained. The results indicate that at a constant detection distance, there is a gradual increase in the SNR of the image with increasing gate width, followed by a saturation point. The higher the SNR, the closer the inverted \(C_n^2\) is to the ultrasonic anemometer. Meanwhile, if the SNR is similar, the inverted \(C_n^2\) is similar. Finally, the appropriate gate width for this system is given.
通过理论计算和现场实验，在 DIM 激光雷达中对距离门控技术中的门宽设置进行了优化。得出了栅极宽度与探测距离之间的数学关系。得到了栅极宽度与图像信噪比（SNR）的关系曲线，以及栅极宽度与大气折射率结构常数（C_n^2\）的关系曲线。结果表明，在探测距离不变的情况下，随着栅极宽度的增加，图像信噪比逐渐增加，随后达到饱和点。信噪比越高，反相 \(C_n^2\)就越接近超声风速计。同时，如果信噪比相近，则反相的\(C_n^2\)也相近。最后，给出了该系统合适的门宽度。
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Features publication of experimental and theoretical investigations in applied physics
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Coverage includes laser physics, linear and nonlinear optics, ultrafast phenomena, photonic devices, optical and laser materials, quantum optics, laser spectroscopy of atoms, molecules and clusters, and more
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In addition to regular papers Applied Physics B: Lasers and Optics features invited reviews. Fields of topical interest are covered by feature issues. The journal also includes a rapid communication section for the speedy publication of important and particularly interesting results.
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