RAINDROP SIZE DISTRIBUTION (DSD) RETRIEVAL FOR X-BAND DUAL-POLARIZATION RADAR

被引：0
|
作者：
Yoshikawa, Eiichi [1 ]
Chandrasekar, V.
Ushio, Tomoo [1 ]
Kawasaki, Zen [1 ]
机构：
[1] Osaka Univ, Suita, Osaka 565, Japan
来源：
2012 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) | 2012年
关键词：
DSD retrieval; dual-polarization; X-band radar; REFLECTIVITY; PARAMETERS; MODEL; SHAPE;
D O I：
10.1109/IGARSS.2012.6351005
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Raindrop size distribution (DSD) retrieval algorithm for an X-band dual-polarization weather radar is proposed. In this algorithm, DSD range profile is estimated to match the dual-polarization measurements, where the forward and back scatters are formulated simultaneously to avoid the two-step process of attenuation correction and DSD retrieval. For the optimization, the iterative maximum likelihood is applied, in which a posterior PDF of DSD parameters are calculated and then extended to radar network environment. Estimation accuracies of log(N-w) (N-w; mm(-1)m(-3)) and D-0 (mm) derived from single-radar numerical simulation are a mean bias (MB) of -0.02 and a standard deviation (SD) of 0.23, and an MB of 0.01 and an SD of 0.10, respectively.
引用
收藏
页码：2411 / 2414
页数：4
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