太阳活动上升期间武昌法拉弟旋转和UHF闪烁的某些特征(英文)
SOME CHARACTERISTICS OF FARADAY ROTATION AND UHF SCINTILLATION AT WUCHANG TOWARD THE TIME OF MAXIMUM SOLAR ACTIVITY
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摘要: 本文对1988年9月至1989年5月在武昌(114.4°E,30.6°N) 同时接收日本ETS-Ⅱ卫星(130°E)发出的VHF(136MHz)信标信号和苏联静止站--T卫星(99°E)发出的UHF(714MHz)广播电视信号时获得的纸带记录进行了统计分析,现将主要结果概括如下:(1)法拉弟旋转(或者说TEC)有日落后增长 TEC日变曲线除了正常的变化趋势外,还在日落后(1700-2200LT)呈现第二峰,这个峰有时甚至还超过午后的最大值(即第一峰)。Abstract: In this paper, a statistical analysis is made on VHF Faraday rotations and UHF amplitude scintillations by using the recordings of VHF beacon signal from the Japanse satellite ETS-n at 130°E and UHF television signal from Soviet satellite Geostationary Station-T(Hereafter abbreviated as GS-T) at 99°E obtained at Wuchang during the Period Sept. 1988 through May 1989. The characteristics are summarized as follows:(1) a postsunset enhancement in TEC;(2) coexistence of VHF fast Faraday Rotation Fluctuation(Hereafter abbreviated as FRF) with UHF amplitude scintillation;(3) irregularties causing scintillation drift from West to East with a drift speeds of about 90-140 m/s.
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