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Ionospheric electron density irregularities observed by satellite-to-satellite, dual-frequency, low-low Doppler tracking linkA low-low, satellite-to-satellite, dual-frequency, Doppler tracking experiment was performed. The data are analyzed here for irregularities in electron density at the altitude of 212 km. The differential Doppler data with the relative motion term removed are integrated to obtain a representation of the electron density variation along the satellite path. Well-known large-scale features such as the equatorial geomagnetic anomaly and day/night ionization level differences are clearly observed in the integrated data. The larger crest of the morning geomagnetic anomaly is seen to occur in the southern (winter) hemisphere in agreement with previous observations. In addition, a sharp peak in the electron density at the day-to-night transition point is observed in two consecutive revolutions. This effect may be due to the previously postulated atmospheric shock wave generated by supersonic motion of the terminator.
Document ID
19840060289
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Estes, R. D.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Grossi, M. D.
(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA; Raytheon Co., Portsmouth RI, United States)
Date Acquired
August 12, 2013
Publication Date
August 1, 1984
Publication Information
Publication: Radio Science
Volume: 19
ISSN: 0048-6604
Subject Category
Geophysics
Accession Number
84A43076
Funding Number(s)
CONTRACT_GRANT: NAS9-13837
CONTRACT_GRANT: NAGW-51
Distribution Limits
Public
Copyright
Other

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