1.55 μm全光纤相干激光测风雷达技术研究

风速的监测在气象预测、飞行器的安全保障及风力资源的勘测等方面都有着十分重要的应用。采用1.55 μm窄线宽全光纤激光雷达开展全光纤相干多普勒激光测风技术的研究,建立一套由电机带动转盘转动模拟风速测量装置,利用散射信号产生多普勒频移来校准系统的测量准确性。系统采用的1.55 μm全光纤脉冲激光器单脉冲能量为10 μJ、脉冲重复频率为20 kHz、脉宽为200 ns, 模拟风速与实际测量结果具有很好的一致性。

Abstract

The monitoring of wind speed is very important in meteorological prediction, safety protection of aircraft and the investigation of wind resources. The 1.55 μm narrow line width all-fiber lidar is used for all optical fiber laser coherent Doppler wind technology research. A set of the motor driven wheel rotation to simulate wind speed measuring device is developed, and the scattering signal is used to produce Doppler frequency shift to calibrate accuracy of the calibration system. The single-pulse energy of the 1.55 μm all-fiber pulse laser is 10 μJ, the pulse repetition frequency is 20 kHz, the pulse width is 200 ns, and the simulated wind speed is consistent with the actual measurement results.

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柯天美, 谈图, 侯再红, 靖旭, 王振东, 高晓明. 1.55 μm全光纤相干激光测风雷达技术研究[J]. 大气与环境光学学报, 2018, 13(5): 364. KE Tianmei, TAN Tu, HOU Zaihong, JING Xu, Wang Zhendong, GAO Xiaoming. Research on Technology of 1.55μm All-Fiber Coherent Wind Lidar[J]. Journal of Atmospheric and Environmental Optics, 2018, 13(5): 364.

1.55 μm全光纤相干激光测风雷达技术研究

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