| 新疆C波段多普勒雷达地物回波识别方法应用研究 |
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| 引用本文： | 刘军建.新疆C波段多普勒雷达地物回波识别方法应用研究[J].新疆气象,2020,14(5):76-83. |
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| 作者姓名： | 刘军建 |
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| 作者单位： | 中国气象局乌鲁木齐沙漠气象研究所 |
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| 摘 要： | 地物回波直接影响雷达定量探测降水物质以及雷达资料同化的应用，基于回波纹理变化以及径向速度参数开展新疆C波段多普勒雷达地物回波识别方法应用研究。通过雷达探测范围内第一层至第三层仰角地形遮挡与FY-2H总云量信息，对不同天气条件下新疆伊宁、喀什两部雷达低层仰角的地物回波识别方法效果进行定性分析，结果表明：晴空天气条件下，该方法不仅能够有效识别雷达站附近的地物回波，同时对因地形遮挡引起的地物回波也能进行有效识别；在降水天气条件下，能够有效识别地物回波且未对降水回波造成误判；高分辨率的地形数据以及卫星产品对雷达地物回波的识别有一定指导意义，可作为判定因子进一步改进雷达质控方法。
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| 关 键 词： | 多普勒雷达 地物回波 评估 |
| 收稿时间： | 2019/12/17 0:00:00 |
| 修稿时间： | 2020/4/10 0:00:00 |
the Application of C-band Doppler Radar Ground Echo Recognition Method in XinJiang |
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| liujunjian.the Application of C-band Doppler Radar Ground Echo Recognition Method in XinJiang[J].Bimonthly of Xinjiang Meteorology,2020,14(5):76-83. |
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| Authors: | liujunjian |
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| Abstract: | The ground echo directly affects the application of radar in quantitative detection of water substances and radar data assimilation. Based on texture of reflectivity and radial velocity parameters, this paper studies the application of recognition method of radar ground echo of C-band Doppler radar in Xinjiang. Through the information of elevation occlusion and FY-2H total cloud amount from the first layer to the third layer within the radar detection range, the low layers of Yining and Kashi radars in Xinjiang under different weather conditions are analyzed .The results show that the method can not only effectively identify the radar ground echo near the radar station, but also the radar ground echo caused by terrain occlusion in clear weather. Under the condition of precipitation, it can effectively identify the radar ground echo without misjudging the precipitation echo .Terrain data and satellite products have certain guiding significance for the recognition of radar surface echo, which can be used as a judgment factor to further improve the radar quality control method. |
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| Keywords: | Doppler radar ground echo identification evaluation |
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