Universal fluctuations in tropospheric radar measurements

被引：9
|
作者：
Barucci, A. [1 ]
Macaluso, G. [1 ]
Mecatti, D. [1 ]
Noferini, L. [1 ]
Fanelli, D. [2 ,3 ]
Facchini, A. [4 ,5 ]
Materassi, M. [6 ]
Pieraccini, M. [1 ]
Atzeni, C. [1 ]
机构：
[1] Univ Florence, Dept Elect & Telecommun, I-50139 Florence, Italy
[2] Univ Florence, Dipartimento Energet S Stecco, I-50139 Florence, Italy
[3] Ist Nazl Fis Nucl, I-50139 Florence, Italy
[4] Univ Siena, Dept Informat Engn, I-53100 Siena, Italy
[5] Univ Siena, Ctr Study Complex Syst, I-53100 Siena, Italy
[6] CNR, ISC, I-50019 Sesto Fiorentino, Italy
来源：
EPL | 2010年 / 89卷 / 02期
关键词：
D O I：
10.1209/0295-5075/89/20006
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Radar data collected at an experimental facility arranged on purpose suggest that the footprint of atmospheric turbulence might be encoded in the radar signal statistics. Radar data probability distributions are calculated and nicely fitted by a one-parameter family of generalized Gumbel (GG) distributions, G(a). A relation between the wind strength and the measured shape parameter a is obtained. Strong wind fluctuations return pronounced asymmetric leptokurtic profiles, while Gaussian profiles are eventually recovered as the wind fluctuations decrease. Besides stressing the crucial impact of air turbulence for radar applications, we also confirm the adequacy of G(a) statistics for highly correlated complex systems. Copyright (C) EPLA, 2010
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