Observations and analysis of phase scintillation of spacecraft signal on the interplanetary plasma
Observations and analysis of phase scintillation of spacecraft signal on the interplanetary plasma
复制标题
航天器信号在行星际等离子体上的相位闪烁观测与分析
DOI:
10.1051/0004-6361/201322925
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发表时间:
2014-03
期刊:
影响因子:
--
通讯作者:
Hao, L. F.
中科院分区:
文献类型:
--
作者:
Colucci, G.;Wang, W. H.;Yang, W. J.;Hao, L. F.
Aims. The phase scintillation of the European Space Agency's Venus Express (VEX) spacecraft telemetry signal was observed at X-band (lambda = 3.6 cm) with a number of radio telescopes of the European Very Long Baseline Interferometry (VLBI) Network in the period 2009-2013. Methods. We found a phase fluctuation spectrum along the Venus orbit with a nearly constant spectral index of -2.42 +/- 0.25 over the full range of solar elongation angles from 0 degrees to 45 degrees, which is consistent with Kolmogorov turbulence. Radio astronomical observations of spacecraft signals within the solar system give a unique opportunity to study the temporal behaviour of the signal's phase fluctuations caused by its propagation through the interplanetary plasma and the Earth's ionosphere. This gives complementary data to the classical interplanetary scintillation (IPS) study based on observations of the flux variability of distant natural radio sources. Results. We present here our technique and the results on IPS. We compare these with the total electron content for the line of sight through the solar wind. Finally, we evaluate the applicability of the presented technique to phase-referencing VLBI and Doppler observations of currently operational and prospective space missions.
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影响因子:
1.9
作者:
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通讯作者:
R. Fallows;P. Williams;A. Breen
影响因子:
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6.5
作者:
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通讯作者:
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