中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
低纬哨声通过低电离层传播的透射特征——全波解

文献类型:期刊论文

作者徐继生 ; 莫启绪
刊名地球物理学报
出版日期1989
卷号32期号:3页码:256-261
关键词低纬哨声 全波解 哨声波透射损失 电离层底反射
ISSN号0001-5733
其他题名TRANSMISSION CHARACTERISTICS OF LOW LATITUDE WHISTLERS THROUGH THE LOWER IONOSPHERE——FULL WAVE SOLUTION
通讯作者北京8701信箱
中文摘要本文利用全波解方法研究了低纬哨声通过低电离层传播的过程。文中主要计算了哨声波的透射损失和反射系数随投射角与方位角的变化,并结合哨声多站同时观测结果进行了简要的讨论。全波解数值计算结果表明,透射损失随投射角的变化具有南北不对称性,当波矢沿磁力线方向时透射损失最小,且这种不对称性随磁倾角的减小而明显加剧。计算结果还表明,下行哨声的内反射系数基本上不随投射角而变化;但随波频率的升高而减小,并伴有数个相间的极大和极小值,这可能导致哨声回波频谱畸变。
英文摘要In this paper the transmission property of low latitude whistlers through the lower ionosphere has been investigated by means of full wave technique.The emphasis is put on the dependence of the transmission loss and reflection coefficient on the incident and azimuth angles.Besides,some computation results are briefly discussed in comparison with simultaneous multi-stationed observations.It is found that the variation of whistler transmission loss with the incident angle exhibits an asymmetry in south-north direction,which becomes more severe with decreasing dip,and that the transmission loss reaches its m lnimum of -7 dB for one—hop whistlers wlFn the wave normal is parallel to geomagnetic force line. The computation resuIts also show diat the inner reflection coefficient of downgoing whistlers is independent of the incident angle,while it decrease with increasing wave frequency,accompanying with oscillation that m ay lead to distortion of the frequency spectra of whistlers and their echoes.
学科主题空间物理
资助信息国家自然科学基金
语种中文
源URL[http://ir.cssar.ac.cn/handle/122/1153]  
专题国家空间科学中心_空间科学部
推荐引用方式
GB/T 7714
徐继生,莫启绪. 低纬哨声通过低电离层传播的透射特征——全波解[J]. 地球物理学报,1989,32(3):256-261.
APA 徐继生,&莫启绪.(1989).低纬哨声通过低电离层传播的透射特征——全波解.地球物理学报,32(3),256-261.
MLA 徐继生,et al."低纬哨声通过低电离层传播的透射特征——全波解".地球物理学报 32.3(1989):256-261.

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来源:国家空间科学中心

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