SimRadar: A Polarimetric Radar Time-Series Simulator for Tornadic Debris Studies
SimRadar: A Polarimetric Radar Time-Series Simulator for Tornadic Debris Studies
复制标题
SimRadar：用于龙卷碎片研究的偏振雷达时间序列模拟器
DOI：
10.1109/tgrs.2017.2655363
复制
发表时间：
2017
影响因子：
8.2
通讯作者：
Palmer, Robert D.
中科院分区：
文献类型：
--
作者：
Cheong, Boon Leng;Bodine, David J.;Fulton, Caleb J.;Torres, Sebastian M.;Maruyama, Takashi;Palmer, Robert D.
为了研究和表征龙卷风中碎片粒子的散射机制，开发了一个数值极化雷达模拟器。本文的主要动机是试图解释龙卷风附近的雷达观测。其中一个观测结果是在龙卷风附近发现的负微分反射率区域，但它们尚未得到物理解释。有一些假设表明，常见的碎片排列和/或来自具有高雷达截面（RCS）值的物体的主要散射导致负ZDR，但由于龙卷风附近的固有危险，这些假设非常难以验证。然而，可以通过代表性模拟来数字构建场景，以验证合理的原因。这是我们开发雷达仿真器的主要动机。本文的新颖之处是根据实际空气阻力模型推导出实际的轨迹，以及通过实际的极化雷达散射截面建模和消声室测量得出的每个碎片物体的雷达散射截面贡献的典型多样性。
In an effort to study and characterize scattering mechanisms of debris particles in tornadoes, a numerical polarimetric radar emulator was developed. This paper is primarily motivated by attempts to explain radar observations near tornadoes. One such observation is the regions of negative differential reflectivity, which have been found near tornadoes but they are yet to be explained physically. There are hypotheses that suggest common debris alignment and/or dominant scattering from objects with high radar-cross-section (RCS) values that cause negative ZDR, but they are extremely challenging to verify due to the inherent danger near the vicinity of tornadoes. It is, however, possible to numerically construct the scenes through representative simulations to verify the plausible causes. This serves as our primary motivation to develop the radar emulator. The novel aspects of this paper are the realistic trajectory derivation, which is based on a physical air-drag model, and the representative diversity of RCS contributions from each debris object, developed through realistic polarimetric RCS modeling and anechoic chamber measurements.
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影响因子：
3.2
作者：
Dowell, DC;Alexander, CR;Wicker, LJ
通讯作者：
Wicker, LJ
使用偏振雷达估计龙卷风损失
DOI：
--
发表时间：
2013
期刊：
影响因子：
--
作者：
D. Bodine;M. Kumjian;R. Palmer;P. Heinselman;A. Ryzhkov
通讯作者：
A. Ryzhkov
影响因子：
3
作者：
D. Bodine;R. Palmer;Guifu Zhang
通讯作者：
Guifu Zhang
龙卷风碎片
DOI：
--
发表时间：
2012
期刊：
影响因子：
--
作者：
Takashi Maruyama;M. Noda
通讯作者：
M. Noda
影响因子：
0.8
作者：
T. Uchida;Y. Ohya
通讯作者：
T. Uchida;Y. Ohya