Observations of Severe Local Storms and Tornadoes with the Atmospheric Imaging Radar
Observations of Severe Local Storms and Tornadoes with the Atmospheric Imaging Radar
复制标题
利用大气成像雷达观测局部严重风暴和龙卷风
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Andrew D. Byrd
中科院分区：
文献类型：
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作者：
J. Kurdzo;Feng Nai;D. Bodine;T. Bonin;R. Palmer;B. Cheong;J. Lujan;Andrew Mahre;Andrew D. Byrd
摘要：为观测严重的局部风暴而设计的移动雷达平台不断突破空间和时间分辨率的界限，以便对风暴结构和演变进行详细分析。数字波束形成或雷达成像是一种本质上类似于照相相机的技术，其中同时收集来自同一范围内不同空间的数据样本。与使用单个窄波束扫描的雷达相比，这可以实现快速的体积更新率。大气成像雷达 (AIR) 是一种移动 X 波段（3.14 厘米波长）成像气象雷达，可发射垂直 20° 扇形波束，并使用 36 元件接收阵列形成原生波束宽度为 1° × 1° 的瞬时距离高度指示器 (RHI)。方位角旋转可在 6 秒内实现 20° × 90° 体积更新，而先进的脉冲压缩技术可实现 37.5 米的距离分辨率。 AIR 自 2012 年起开始运行，收集了有关龙卷风和……的数据。
AbstractMobile radar platforms designed for observation of severe local storms have consistently pushed the boundaries of spatial and temporal resolution in order to allow for detailed analysis of storm structure and evolution. Digital beamforming, or radar imaging, is a technique that is similar in nature to a photograwphic camera, where data samples from different spaces at the same range are collected simultaneously. This allows for rapid volumetric update rates compared to radars that scan with a single narrow beam. The Atmospheric Imaging Radar (AIR) is a mobile X-band (3.14-cm wavelength) imaging weather radar that transmits a vertical, 20° fan beam and uses a 36-element receive array to form instantaneous range–height indicators (RHIs) with a native beamwidth of 1° × 1°. Rotation in azimuth allows for 20° × 90° volumetric updates in under 6 s, while advanced pulse compression techniques achieve 37.5-m range resolution. The AIR has been operational since 2012 and has collected data on tornadoes and ...