| 高频返回信道的频率散布测量 |
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| 引用本文： | 张秀菊.高频返回信道的频率散布测量[J].空间科学学报,1989,9(3):216-220. |
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| 作者姓名： | 张秀菊 |
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| 作者单位： | 中国电波传播研究所, 新乡 |
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| 摘 要： | 本文介绍了用高频后向散射探测系统测量高频返回信道的频率散布的实验, 对高频返回信道的多普勒频移和多普勒频谱宽度的日变化进行讨论.文中比较了地物回波谱和应答回波谱证实了陆地对高频后向散射信道的多普勒频移贡献甚小, 而对谱宽度和谱的形状有影响.
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| 关 键 词： | 高频返回信道 频率散布 电离层 |
| 收稿时间： | 1988-08-23 |
FREQUENCY DISPERSION OF THE HF BACKSCATTER CHANNAI |
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| Institution: | China Research Institute of Radio-wave Propagation, Xinxiang |
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| Abstract: | In this paper an experiment to measure the frequency changes in an ionospheric channal by HFbackscatter techniques are described. The method of the digital spectra analysis are used, the variations of the Doppler frequency shifts and frequency spread versus time of the day are discussed. By comparing with the land echo spectra and response echo spectra, the results show that in HFbackscatter the contribution of the land to Doppler frequency shifts does not exist, but it affects the spectra width. |
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