12GHz电波的强度闪烁观测和结果分析
OBSERVATION AND ANALYSIS OF 12GHz EELCTRIC-WAVE INTENSITY SCINTILLATION AT LOW ELEVATION ANGLE
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摘要: 本文利用自行研制的数据采集和处理系统发展了一种以跟踪太阳的方式研究低仰角晴空大气湍流引起的12GHz电波强度闪烁的方法,克服了对卫星信标的依赖性。从1989年1月至4月进行了观测,得出了一些有价值的统计结果。Abstract: On the basis of authers developed data sampling and processing system, the 12GHz intensity scintillation of clear air turbulence has been observed and analysed at low elevation angle by tracing the sun. The experimental results are given and discussed. The con-clusions are obtained as follows: (1) Between 16 and 4, the lower the elevation angle, the larger the sciatillation intensity in clear air will be. Scintillation is most probably to appear two or three days after rain. (2) The frequency at flection point (ft) appears, in general, between 0.1Hz and 1Hz.
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P. S. L. Lo, et al., Electron. Lett., 20 (1984), 307-308.[2]R. V. Webber, et al., Ann. Telecommun., 35 (1980) 11-12, 494-500.[3]J. I. Strckland, et al., Ann. Telecommun., 32 (1977) 11-12, 530-535.[4]余少华,12GHz对流层闪烁特性,武汉大学硕士论文,1989年.[5]余少华,姚博文,电脑与微电子技术,1988年,第4期,第42-43页.[6]余少华,电子与电脑,1990年,第9期,第4-5页.[7]A. 石丸著,黄润恒,周诗健译,随机介质中波的传播和散射,科学出版社,1986年.[8]J. Haddon, E. Vilar, IEEE Trans. on AP, AP-34 (1986) 5, 646-657. -
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