电离层信道的时变特性对短波授时的影响  

The Effects of Time-varying Ionospheric Channel on HF Timing

作　　者：宁百齐[1] 吴振华[1] 李钧[1] 

机构地区：[1]中科院武汉物理研究所

出　　处：《电波科学学报》1994年第2期78-84,共7页Chinese Journal of Radio Science

基　　金：国家自然科学基金

摘　　要：本文通过对短波时号电离层传播的长期观测研究，详细分析了时号经由电离层传播时出现的各种现象及对其短波定时性能的影响。理论研究和实验均表明：采取有效方法克服电离层电波传播因素的影响，现有短波定时的精度及性能有可能进一步提高。In this paper, some ionospheric propagation phenorncna of HF time signal are discussed based on along period observation. Their effects on the accuracy of HF timing precision are studied It is shown that the HFtiming performance would be improved if these effects are removed effectively. A new method for HF time-signalreception has been put forward. Some measurments show that this method enables users to obtain a timing accuracyof 1 ms automatically in real-time.

关 键 词：电离层信道 时变特性 短波授时 

分 类 号：TN014[电子电信—物理电子学]