Journal of Infrared and Millimeter Waves, Volume. 39, Issue 4, 462(2020)

Research on airport low-level wind shear identification algorithm based on laser wind radar

Qi FAN1, Jia-Feng ZHENG2、*, Ding-Fu ZHOU1, Ke-Yun ZHU2, Jie ZHANG2, Wen-Hao TONG1, and Xiong LUO1
Author Affiliations
  • 1Chengdu Southwest Institute of Technical Physics, Chengdu60225, China
  • 2College of Atmospheric Science, Chengdu University of Information Technology, Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu6105, China
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    Figures & Tables(11)
    Installation position of wind lidar (a) Kunming Changshui International Airport, (b) Xining Caojiabao International Airport
    Diagram of airfield traffic pattern
    Low-altitude wind shear product display interface (a) contains the original wind field, (b) does not contain the original wind field
    Low-level wind shear at Changshui International Airport on February 17, 2016, elevation angle 6° (a) recognition results of the algorithm in this paper, (b) recognition results of the Some foreign lidar
    Low-level wind shear at Caojiabao international Airport on April 26, 2018, elevation angle 6° (a) low-level wind shear identification product, (b) wind vector product
    Vertical wind product drawing of wind profile radar
    • Table 1. FC-Ⅲ型激光测风雷达主要性能指标

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      Table 1. FC-Ⅲ型激光测风雷达主要性能指标

      参数FC-III激光测风雷达
      重量60 kg
      波长1.55 µm
      扫描模式PPI、 RHI、DBS、下滑道
      俯仰角0°~180°
      方位角0°~360°
      最大探测距离≥10 km
      最小探测距离≤45 m
      距离分辨率30 m/50 m/75 m/100 m可选
      时间分辨率15 s~2 min可调
      风向误差≤8°(均方根误差)
      风速误差≤0.5 m/s(均方根误差)
    • Table 2. “K-邻域频数法”在激光雷达速度场中的最优参数

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      Table 2. “K-邻域频数法”在激光雷达速度场中的最优参数

      数据类型窗口大小区间数区间间隔剔除阈值补缺阈值
      径向速度MNPdK1K2
      3315435
    • Table 3. 低空风切变强度标准

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      Table 3. 低空风切变强度标准

      等级风切变强度(1/s)
      轻度<0.067
      中度0.068~0.138
      强烈0.139~0.206
      严重>0.206
    • Table 4. 昆明长水机场低空风切变信息统计

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      Table 4. 昆明长水机场低空风切变信息统计

      天气

      实况

      时间

      风切变

      强度

      发生

      位置

      国外某雷达

      算法

      本文

      算法

      本文算法告警

      持续时间/min

      备注
      2/03 14:30轻度22R命中命中3
      2/03 18:31不明04L漏报命中5
      2/14 22:28轻度04L一边命中命中7
      2/14 22:52中度04L命中命中3
      2/17 12:50强度22R五边命中命中8
      2/17 17:14轻度21R五边命中漏报
      2/17 17:39轻度21R五边漏报命中5
      2/17 17:52轻度21R五边漏报命中6
      3/12 12:41中度04L命中命中9
      3/15 10:20中度22R五边命中命中10
      3/15 12:09中度21R五边命中漏报
      3/16 9:53中度21R命中命中3
      3/16 16:24轻度21R五边漏报命中4
      多云3/14 17:12不明03L一边命中命中3
      多云3/22 13:44中度21R五边命中命中5
      多云4/21 16:10中度03L一边命中命中6
      4/15 13:26轻度21R五边命中命中3
      2/28 17:47中度21R五边漏报漏报高饱和度水汽造成激光衰减,雷达测程覆盖不到风切变发生区域
      2/17 20:51轻度03L一边漏报漏报
      2/17 22:03轻度04L一边漏报漏报
      2/17 22:07不明03L一边漏报漏报
      阵雨2/28 18:25轻度04L一边漏报漏报
      阵雨2/28 18:34中度04L一边漏报漏报
      阵雨2/29 14:44不明21R漏报漏报
      阵雨4/02 17:34中度22R五边漏报漏报
      阵雨4/03 19:40中度22R五边漏报漏报
      阵雨4/17 15:34不明04L一边漏报漏报
      阵雨4/19 13:53轻度21R五边漏报漏报
      小阵雨2/28 18:16不明04L命中命中
      小阵雨3/21 13:02不明22R五边命中命中
      小阵雨4/16 21:55不明22R命中命中
    • Table 5. 西宁曹家堡机场低空风切变信息统计表

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      Table 5. 西宁曹家堡机场低空风切变信息统计表

      天气实况日期时间风切变位置强度本文算法

      算法告警

      持续时间/min

      03/01 19:0529R 一边未知命中4
      多云02/19 20:3011L 五边轻度命中7
      多云04/26 13:2811L五边未知命中14
      小阵雨06/10 15:3629R一边未知命中
      扬沙04/05 15:1511L五边未知

      雷达探测范围

      覆盖不到无法判断

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    Qi FAN, Jia-Feng ZHENG, Ding-Fu ZHOU, Ke-Yun ZHU, Jie ZHANG, Wen-Hao TONG, Xiong LUO. Research on airport low-level wind shear identification algorithm based on laser wind radar[J]. Journal of Infrared and Millimeter Waves, 2020, 39(4): 462

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    Paper Information

    Category: Remote Sensing Technology and Application

    Received: Sep. 19, 2019

    Accepted: --

    Published Online: Sep. 17, 2020

    The Author Email: Jia-Feng ZHENG (zjf1988@cuit.edu.cn)

    DOI:10.11972/j.issn.1001-9014.2020.04.011

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