| 改进新一代天气雷达低层探测能力研究 |
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| 引用本文： | 杨金红,陈大任,王曙东.改进新一代天气雷达低层探测能力研究[J].气象,2013,39(4):494-499. |
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| 作者姓名： | 杨金红 陈大任 王曙东 |
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| 作者单位： | 中国气象局气象探测中心,北京,100081 |
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| 基金项目： | 公益性行业（气象）科研专项（GYHY201206038）资助 |
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| 摘 要： | 为进一步改进新一代天气雷达低层探测性能和提高风暴顶高的准确性,利用SRTM(Shuttle Radar TopographyMission)地理信息数据,研究和设计新一代天气雷达的体扫模式,主要是增加中低层仰角数和负仰角,以提高我国新一代天气雷达的低层探测能力。选取福州、龙岩两部雷达为例来计算降水模式的仰角,得出两部雷达新的观测模式VCP12。通过观测试验表明,增加低仰角或负仰角后,能够提高雷达的低层探测性能。
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| 关 键 词： | SRTM地理信息数据 新一代天气雷达 体扫模式 低仰角或负仰角 |
| 收稿时间： | 2012/1/17 0:00:00 |
| 修稿时间： | 2012/7/24 0:00:00 |
Research on Improving CINRAD Detection Ability in Lower Layers |
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| YANG Jinhong,CHEN Daren and WANG Shudong.Research on Improving CINRAD Detection Ability in Lower Layers[J].Meteorological Monthly,2013,39(4):494-499. |
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| Authors: | YANG Jinhong CHEN Daren and WANG Shudong |
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| Institution: | China Meteorological Administration Meteorological Observation Centre, Beijing 100081;China Meteorological Administration Meteorological Observation Centre, Beijing 100081;China Meteorological Administration Meteorological Observation Centre, Beijing 100081 |
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| Abstract: | In order to improve China New Generation Weather Radar (CINRAD) low level detection performance and accuracy of the wind storm top height, this paper studies and designs a volume coverage pattern (VCP) for CINRAD using SRTM geographic information data. It aims to improve CINRAD detection ability in lower layers by adding the number of elevation angles in lower and middle layers as well as negative elevation angles. We took Fuzhou and Longyan radar as examples to compute elevation angles for precipitation mode, and derived their new observation mode VCP12. Observation experiment results show that radar detection ability in the lower atmosphere can be improved after low or negative elevation angles are added. |
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| Keywords: | SRTM (shuttle radar topography mission) geographic information data CINRAD volume coverage pattern (VCP) low or negative elevation angles |
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