Abstract
Measurements of S-band downlink frequency (Doppler) shift were collected for intervals of about 30 days during the 1994 and 1995 solar conjunctions of the Galileo spacecraft. The occultation geometries enabled coronal radio sounding of the heliographic equatorial region over a heliocentric range from about 5 to 20 R s (solar radii) for the 1994 conjunction and from about 4 to 35 R s for the 1995 conjunction. Spectral analysis was carried out with the S-band Doppler scintillations to determine the strength and spectral distribution of coronal electron density fluctuations. Cross-correlations of the Galileo downlink signals received simultaneously at two ground stations were computed to obtain the propagation velocity of plasma disturbances crossing the ray paths.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Armstrong, J. W., Woo, R., Estabrook, F. B. (1979) Astrophys. J., 230, 570–574.
Bird, M. K. (1982) Space Sci. Rev., 33, 99–126.
Bird, M. K., Volland, H., Pätzold, M., Edenhofer, P., Asmar, S. W., Brenkle, J. P. (1994) Astrophys. J., 426, 373–381.
Efimov, A. I., Yakovlev, O. I., Shtrykov, V. K., Rogal’skii, V. I., Tikhonov, V. F. (1981) Soy. Radio Eng. Electron., 26, 311–318.
Howard, H. T., Eshleman, V. R., Hinson, D. P., Kliore, A. J., Lindal, G. F., Woo, R., Bird, M. K., Volland, H., Edenhofer, P., Pätzold, M., Porsche, H. (1992) Space Sci. Rev., 60, 565–590.
Wohlmuth, R., Plettemeier, D., Edenhofer, P. (1997a) Kleinheubacher Ber., 40, 250–259, (in German).
Wohlmuth, R., Plettemeier, D., Edenhofer, P., Bird, M. K., Pätzold, M., Asmar, S. W. (1997b) Radio Sci.,(in press).
Yakovlev, O. I., Efimov, A. I., Yakubov, V. P., Korsak, O. M., Kartonov, A. S., Erofeev, A. L., Rubtsov, S. N. (1989) Radiophys. Quant. Electron., 32, 531–537.
Yakovlev, O. I., and Mullan, D. J. (1996) Irish Astr. J., 23, 7–32.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1997 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Wohlmuth, R., Plettemeier, D., Edenhofer, P., Bird, M.K., Asmar, S.W. (1997). Analysis of Galileo Doppler Measurements during the Solar Occultations in 1994 And 1995. In: Barbieri, C., Rahe, J.H., Johnson, T.V., Sohus, A.M. (eds) The Three Galileos: The Man, the Spacecraft, the Telescope. Astrophysics and Space Science Library, vol 220. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-8790-7_41
Download citation
DOI: https://doi.org/10.1007/978-94-015-8790-7_41
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-4955-1
Online ISBN: 978-94-015-8790-7
eBook Packages: Springer Book Archive