基于GPS的广州地区电离层闪烁谱分析

Analysis of Ionospheric Scintillation Spectra Characteristics in Guangzhou Region

利用广州站GPS电离层闪烁监测仪2014和2015年的观测数据,从150例典型闪烁事件中提取出4820例闪烁谱和闪烁谱指数,分析发现广州地区闪烁对应单幂律谱和双幂律谱两大典型闪烁谱.这些闪烁谱可以细分为5类,初步分析了这5类闪烁谱的特征和产生原因.通过统计分析发现,谱指数分布在0.63～9.57,平均谱指数为3.86,78.5%以上的谱指数分布在0～6,83.4%中弱闪烁强度的谱指数值分布在0～7,89.27%的强闪烁强度的谱指数分布在5～10,谱指数随闪烁强度的增强有上升趋势.

Based on the data of GPS ionospheric scintillation observed at Guangzhou region in2014 and 2015, 4820 scintillation spectra and spectral indexes are extracted from 150 typical flicker events. The analyses find that there are mainly two types of scintillation spectra in Guangzhou region,which can be subdivided into five categories. The characteristics and causes of typical scintillation spectrum are analyzed. The study found that the spectral index are from 0.63 to 9.57, and the average spectral index is 3.86. More than 78.5% of the spectral indexes are distributed from 0 to6. 83.4% of weak scintillation intensity spectral indexes are distributed from 0 to 7, and 89.27% of strong flashing spectral indexes are distributed from 5 to 10. The spectral index increases as the flicker index increasing.