| 长城站与新乡短波通信试验与传播方位研究 |
| |
| 引用本文： | 孙宪儒,李忠勤.长城站与新乡短波通信试验与传播方位研究[J].极地研究,1988,1(2):59-65. |
| |
| 作者姓名： | 孙宪儒 李忠勤 |
| |
| 作者单位： | 中国电波传播研究所
(孙宪儒)，中国电波传播研究所(李忠勤) |
| |
| 摘 要： | 本文首先简要介绍了1985年12月至1986年3月南极长城站与新乡的短波通信效果,可通信的时段与频段,并将频段与计算的MUF进行了比较.结果表明,经过南极区的短大圆路径的通信频段上限与计算的MUF基本相符;经过北极的长大圆路径的通信频段上限与计算的MUF有偏差.其次详细介绍了在1986年1月和2月进行的传播方位测量结果.在南极长城站至新乡电路上沿大圆路径传播是主要的,而在一定时间内存在着一些非大圆路径传播.经分析研究,我们认为构成非大圆路径传播的主要原因是地表的散射,而且较强的天线副瓣和较小的电离层吸收有助于非大圆路径的形成.
|
| 关 键 词： | 短波通信试验 南极长城站 新乡站 传播方位 |
SHORT-WAVE COMMUNICATION EXERIMENT AT ANTARCTIC GREAT WALL STATION AND XINSIANG, HENAN PROVINCE,AND THE PROBLEM OF PROPAGATION BEARINGS |
| |
| Sun Xianru,Li Zhongqin.SHORT-WAVE COMMUNICATION EXERIMENT AT ANTARCTIC GREAT WALL STATION AND XINSIANG, HENAN PROVINCE,AND THE PROBLEM OF PROPAGATION BEARINGS[J].Chinese Journal of Polar Research,1988,1(2):59-65. |
| |
| Authors: | Sun Xianru Li Zhongqin |
| |
| Institution: | China Research Institute of Radio Wave Propagation |
| |
| Abstract: | In the paper first persented are the results of the SW- communication experiment including received signal quality levels in both stations, available time segments in one day and operational frequency bandwidth, which have been obtained in the compaign of experiment taken from Dec.1985 to Mar.1986.A comparison of the communication frequency bandwidth and the calculated MUF have been made.It is found that the upper limit of the operational frequency bandwidth along the short great circle path which crosses the south-polar, region is approximately in accord with the calculated MUF and the other one along the long great circle path which crosses the north- polar region is different from the calculated MUF. Furthermore, in the paper the results of the bearings measurements taken from Jan.to Feb.1986 are presented in detail.The waves propagated along the great circle path are.of major propagation mode between the Antarctic Great Wall Station and Xinciang Station. But there are some non-great-circle path propagations in certain hours. It is proposed that the resultant non-great-circle path propagation is probably due to the wave scatering effects on , the earth's surface. Intense side lobes of antenna and weak ionospheric absorption help to form the non-great-circle path propagation. |
| |
| Keywords: | SW-Communication Experiment Antarctic Great Wall Station Xinxiang Station Propagation bearings |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《极地研究》浏览原始摘要信息 |
| 点击此处可从《极地研究》下载免费的PDF全文 |
|
