Polarimetric radar properties of smoke plumes: A model
Polarimetric radar properties of smoke plumes: A model
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DOI：
10.1029/2009jd012647
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发表时间：
2009-11-06
影响因子：
4.4
通讯作者：
Rabin, R. M.
中科院分区：
文献类型：
--
作者：
Melnikov, V. M.;Zrnic, D. S.;Rabin, R. M.
1988年多普勒偏振天气监视雷达（WSR-88 D）利用水平和垂直通道信号之间的低相关系数可以识别烟羽。一个模型，描述了在10厘米波长的雷达测量。使用该模型得出结论，烟雾散射体具有针状的形式。散射体以23 °的平均角度摆动。27度，这是主要粒子的轴和水平面之间的角度。由此推断，散射体的介电常数的真实的部分大于15，长短轴比大于6。偏振雷达的未来能力可以用来确定烟雾粒子的属性，具有更好的精度。
Smoke plumes can be recognized with the polarimetric Weather Surveillance Radar, 1988 Doppler (WSR-88D) using low correlation coefficient between signals in the horizontal and vertical channels. A model that describes radar measurements at 10 cm wavelength is developed. Using the model it is concluded that smoke scatterers have a needle-like form. The scatterers flutter with the mean angle of 23...27 degrees which is the angle between the major particle's axis and horizontal plane. It is inferred that the scatterers have the real part of dielectric permittivity larger than 15 and the major-to-minor axis ratio larger than 6. Future capabilities of the polarimetric radar can be used to determine smoke particles' properties with better accuracy.