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。
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.
出处
《气象》
CSCD
北大核心
2013年第4期494-499,共6页
Meteorological Monthly
基金
公益性行业(气象)科研专项(GYHY201206038)资助
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
SRTM （shuttle radar topography mission） geographic information data, CINRAD, volume coverage pattern （VCP）, low or negative elevation angles
