Observations and analysis of phase scintillation of spacecraft signal on the interplanetary plasma

Calves, G. M.Aalto-Yliopisto,Aalto University,Joint Institute for VLBI in Europe (JIVE) (författare)

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.

NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
TRACKING
V231
scattering
SOLAR-WIND
P1414
SPEED
VLBI
astrometry
1986
interplanetary medium
Sun: heliosphere
techniques: interferometric
EISCAT
RADIO SOURCES
plasmas
SCIENCE
ESTON RA

Pogrebenko, SergeiJoint Institute for VLBI in Europe (JIVE) (författare)
Cimo, G.Joint Institute for VLBI in Europe (JIVE) (författare)
Duev, DmitryM. V. Lomonosov Moscow State University,Joint Institute for VLBI in Europe (JIVE) (författare)
Bahamon, T. M. B.Technische Universiteit Delft,Delft University of Technology (TU Delft),Joint Institute for VLBI in Europe (JIVE),Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences (författare)
Wagner, JanMax Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Aalto-Yliopisto,Aalto University (författare)
Kallunki, J.Aalto-Yliopisto,Aalto University (författare)
de Vicente, P. (författare)
Kronschnabl, G. (författare)
Haas, Rüdiger,1966Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)rudiger (författare)
Quick, J.Hartebeeshoek Radio Astronomy Observatory (författare)
Maccaferri, G.Istituto nazionale di astrofisica (INAF) (författare)
Colucci, G.Agenzia Spaziale Italiana (författare)
Wang, W. H.Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences (författare)
Yang, W. J.Chinese Academy of Sciences (författare)
Hao, L. F.Chinese Academy of Sciences (författare)
Aalto-YliopistoJoint Institute for VLBI in Europe (JIVE) (creator_code:org_t)

Av författaren/redakt...: Calves, G. M.; Pogrebenko, Serg ...; Cimo, G.; Duev, Dmitry; Bahamon, T. M. B ...; Wagner, Jan; visa fler...; Kallunki, J.; de Vicente, P.; Kronschnabl, G.; Haas, Rüdiger, 1 ...; Quick, J.; Maccaferri, G.; Colucci, G.; Wang, W. H.; Yang, W. J.; Hao, L. F.; visa färre...

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