Characteristics of L-band (1.5 GHz) and VHF (244 MHz) amplitude scintillations recorded at Kolkata during 1996-2006 and development of models for the occurrence probability of scintillations using neural network

被引：13

作者：

Das, A. ^{[1
]}

Das Gupta, A. ^{[1
]}

Ray, S. ^{[1
]}

机构：

[1] Univ Calcutta, SK Mitra Ctr Res Space Environm, Kolkata 700009, India

来源：

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2010年 / 72卷 / 9-10期

关键词：

Scintillation; Ionosphere; Scintillation index; Modelling of scintillation occurrence; Neural Network; GLOBAL POSITIONING SYSTEM; F-REGION IRREGULARITIES; EQUATORIAL SPREAD-F; IONOSPHERIC SCINTILLATION; RADAR OBSERVATIONS; FOF2; VARIABILITY; PREDICTIONS; MORPHOLOGY; SCATTERING;

D O I：

10.1016/j.jastp.2010.03.010

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

L-band (1.5 GHz) and VHF (244 MHz) amplitude scintillations observed from Kolkata (22.58 degrees N lat, 88.38 degrees E long, 32 degrees N dip), over a solar cycle 1996-2006 are presented in this paper. Situated near the northern crest of the equatorial anomaly, it is an excellent platform for scintillation studies. Based on 11 years' data, an attempt is made to develop models of hourly percentage occurrence of scintillations for the rising and declining phases of solar cycle using Neural Network. The relation between fading rate at VHF with the S4 index at L-band is also investigated. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：685 / 704

页数：20

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