连续两次特大粒子沉降对南极甚低频传播影响的观测和分析  

Observation and Analysis of the Effect of Two Consecutive Extra-large Particles Sedimentation on VLF Signal Propagation in Antarctic

作　　者：牛有田[1,2] 李玲[1,2] 赵协中[3] 李丹丹[1,2] 位书军 毕永兴 

机构地区：[1]河南师范大学物理与电子工程学院,新乡453007 [2]河南省光伏材料重点实验室,新乡453007 [3]中国电波传播研究所,新乡453007

出　　处：《科学技术与工程》2014年第22期203-206,共4页Science Technology and Engineering

基　　金：国家自然科学基金(49070217)资助

摘　　要：通过观测1991-07-19 ～ 1991-07-20连续发生两次特大粒子沉降时,Omega导航系统G台与南极中山站之间甚低频（VLF）信号传播的相位变化情况,比较正常情况下G台-中山站的相位变化曲线;分析出VLF信号相位出现的异常变化.再与NGDC发布的GOES卫星观测的高能粒子流量作对比,研究连续两次特大粒子沉降对南极VLF信号传播造成的影响.结果表明高能粒子沉降与VLF信号相位异常超前现象之间存在着很好的相关性。The phase changes of very low frequency （VLF） signal propagation between G station of Omega navigation system and Zhongshan station in Antarctic has been observed when two consecutive extra-large particles sedimentation occurring on July 19 to 20,1991.The observations with the phase changes under normal conditions is compared,and analysed the unpleasant changes of VLF signal propagation.In order to research the effect of two consecutive extra-large particles sedimentation on VLF signal propagation in Antarctic,a contrast between the abnormal changes and the flow of energetic particles,which is observed by geostationary operational environmental satellite （GOES） and released by national geophysical data center （NGDC）,is also given in this article.The result shows that there is a good correlation between energetic particles sedimentation and abnormal phase advance phenomena of VLF signal propagation.

关 键 词：粒子沉降 南极中山站 VLF信号 相位变化 

分 类 号：TN011.2[电子电信—物理电子学]