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Analysis on wind retrieval methods for Rayleigh Doppler lidar

机译：瑞利多普勒激光雷达的取风方法分析

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摘要

A modification method is described for Rayleigh Doppler lidar wind retrieval. Compared to the double-edge theory of Korb et al. [Appl. Opt. 38,432 (1999)] and the retrieval algorithm of Chanin et al. [Geophys. Res. Lett. 16,1273 (1989)], it has a greater sensitivity. The signal-to-noise ratio of the energy monitor channel is involved in error estimation. When the splitting ratio of the two signal channels is 1.2, which usually happened during wind detection, it will improve the measurement accuracy by about 1 % at 30 km altitude for a Doppler shift of 250 MHz (44 m/s). Stabilities of retrieval methods, i.e., errors caused by the spectrum width deviation including laser pulse, Rayleigh backscatter, and filter transmission curve are first discussed. The proposed method increases the resultant precision by about 15% at 30-km altitude assuming an 8-MHz deviation in full width at half maximum of the Fabry-Perot interferometer.
机译：描述了一种用于瑞利多普勒激光雷达风取回的修改方法。与Korb等人的双刃理论相比。 [应用选择。 38,432（1999）]和Chanin等人的检索算法。 [地球物理学。 Res。来吧16，1273（1989）]，它具有更大的敏感性。能量监控器通道的信噪比涉及误差估计。当两个信号通道的分割比为1.2（通常在风检测期间发生）时，对于250 MHz（44 m / s）的多普勒频移，在30 km的高度下，它将提高测量精度约1％。首先讨论了检索方法的稳定性，即由光谱宽度偏差引起的误差，包括激光脉冲，瑞利反向散射和滤波器透射曲线。假设法布里-珀罗干涉仪的最大宽度的一半有一个8MHz的偏差，那么在30公里高度处，所提出的方法将使结果精度提高约15％。

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  • 来源
    《Optical engineering》 |2014年第6期|061607.1-061607.8|共8页
  • 作者

    Yuli Han; Xiankang Dou; Dongsong Sun; Haiyun Xia; Zhifeng Shu;

  • 作者单位

    University of Science and Technology of China School of Earth and Space Sciences CAS Key Laboratory of Geospace Environment 96 Jinzhai Road, Hefei Anhui 230026, China;

    University of Science and Technology of China School of Earth and Space Sciences CAS Key Laboratory of Geospace Environment 96 Jinzhai Road, Hefei Anhui 230026, China;

    University of Science and Technology of China School of Earth and Space Sciences CAS Key Laboratory of Geospace Environment 96 Jinzhai Road, Hefei Anhui 230026, China;

    University of Science and Technology of China School of Earth and Space Sciences CAS Key Laboratory of Geospace Environment 96 Jinzhai Road, Hefei Anhui 230026, China;

    University of Science and Technology of China School of Earth and Space Sciences CAS Key Laboratory of Geospace Environment 96 Jinzhai Road, Hefei Anhui 230026, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    retrieval method; Rayleigh Doppler lidar; laser remote sensing;

    机译：检索方法;瑞利多普勒激光雷达;激光遥感;

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