期刊文献+

海南三亚地区S_4指数与C/N、ROTI的比较分析 被引量:12

A comparison and analysis of the S_4 index,C/N and ROTI over Sanya
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摘要 本文通过利用海南三亚站(18.34°N,109.62°E)GPS闪烁/TEC接收机2004年8月到2005年7月间观测数据,在对三亚地区闪烁初步统计分析的基础上,比较分析了观测数据中S4(幅度闪烁指数)和C/N(载噪比),S4和ROTI(TEC变化率标准差)的关系,同时对2004年11月7日的闪烁事件进行了具体的分析.通过比较分析得出:(1)三亚地区全年的闪烁强度具有明显的半年变化,在春秋季出现全年闪烁强度的最大值;(2)S4与C/N具有很好的负相关性;(3)ROTI可以作为由小尺度不规则结构引起闪烁出现的指示剂. Using the data received by GPS scintillation/TEC receiver at Sanya station in Hainan province during August, 2004- July, 2005, we made some comparison and analyses of the S4 (the amplitude scintillation index), C/N (Carrier to Noise) and ROTI (the standard deviation of the change rate of TEC ). We also analyzed the scintillation on 7 November 2004 in detail. From the comparison and analysis, we concluded as follows : ( 1 ) the scintillation strength of one year has a semiyearly periods, the maximum scintillation strength of one year appears in spring and autumn; (2) the S4 and C/N have a good negative correlation; (3) ROTI can be regarded as an indicator of the present of scintillation causing small-scale ionospheric irregularities.
出处 《地球物理学报》 SCIE EI CAS CSCD 北大核心 2007年第6期1639-1648,共10页 Chinese Journal of Geophysics
基金 中国科学院创新方向性项目(kzcx3-sw-144) 国家自然科学基金(40636032) 国家重点基础研究规划项目(2006CB806306) 华北电力大学青年教师科研基金资助
关键词 GPS 闪烁 电子浓度总含量 载噪比 S4 GPS, Scintillation, TEC, C/N, S4
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参考文献19

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