摘要: The sunset fading effect, or flutter fading, is a phenomenon sometimes observed on radio signals reflected from the F region of ionosphere when reflection point near magnetic equator. effect was investigated in Ghana using direct observation carrier level, fading-rate meter, and Doppler technique. It found that occurs between midnight, has equinoctial maximums, correlates positively with sunspot cycle. rate directly proportional to frequency. suggested coherent scatter elongated irregularities could account for correlation radio-star scintillations results. (auth)
harvard.edu
agu.org参考文章(6)
N. S. SUBBA RAO, Y. V. SOMAYAJULU, A Peculiar Type of Rapid Fading in Radio Reception Nature. ,vol. 163, pp. 442- 442 ,(1949) , 10.1038/163442A0
IGY observations of F-layer scatter in the far east Journal of Geophysical Research. ,vol. 64, pp. 403- 405 ,(1959) , 10.1029/JZ064I004P00403
B.W. Osborne, Ionospheric behaviour in the F2 region at Singapore Journal of Atmospheric and Solar-Terrestrial Physics. ,vol. 2, pp. 66- 78 ,(1951) , 10.1016/0021-9169(51)90032-3
J. M. Watts, K. Davies, Rapid frequency analysis of fading radio signals Journal of Geophysical Research. ,vol. 65, pp. 2295- 2301 ,(1960) , 10.1029/JZ065I008P02295
J. R. Koster, R. W. Wright, Scintillation, spreadF, and transequatorial scatter Journal of Geophysical Research. ,vol. 65, pp. 2303- 2306 ,(1960) , 10.1029/JZ065I008P02303
Peculiarities of the ionosphere in the Far East: A report on IGY observations of sporadicEandF-region scatter Journal of Geophysical Research. ,vol. 65, pp. 885- 892 ,(1960) , 10.1029/JZ065I003P00885