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Remote wind sensing with a CW diode laser lidar beyond the coherence regime

机译:利用CW二极管激光激光雷达实现相干范围之外的远程风速感应

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We experimentally demonstrate for the first time (to our knowledge) a coherent CW lidar system capable of wind speed measurement at a probing distance beyond the coherence regime of the light source. A side-by-side wind measurement was conducted on the field using two lidar systems with identical optical designs but different laser linewidths. While one system was operating within the coherence regime, the other was measuring at least 2.4 times the coherence range. The probing distance of both lidars is 85 m and the radial wind speed correlation was measured to be r~2 = 0.965 between the two lidars at a sampling rate of 2 Hz. Based on our experimental results, we describe a practical guideline for designing a wind lidar operating beyond the coherence regime.
机译:我们首次(据我们所知)通过实验证明了一种相干的连续波激光雷达系统,该系统能够以超出光源相干范围的探测距离进行风速测量。使用两个具有相同光学设计但激光线宽不同的激光雷达系统在现场进行了并排风测量。当一个系统在相干范围内运行时,另一个系统的测量至少是相干范围的2.4倍。两个激光雷达的探测距离为85 m,两个激光雷达之间的径向风速相关性经测量为r〜2 = 0.965,采样率为2 Hz。根据我们的实验结果,我们描述了设计在相干状态之外运行的激光雷达的实用指南。

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