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Recent results from satellite beacon measurementsThe techniques are reviewed for measuring ionospheric electron content, the most important parameter in the study of transionospheric propagation. Data collected since 1964 have yielded a synoptic description of the behavior of the electron content in midlatitudes. Empirical relationships between the level of solar activity and the electron content were developed permitting the prognostication of the electron content values. Construction of such prognostication schemes was stimulated by current efforts to create accurate satellite borne navigation systems. Gravity waves propagating in the thermosphere leave a signature in the electron content records. Studies of such records have allowed the identification of the position of the gravity wave source, and its radiation pattern. A one-to-one relationship between these waves and polar substorms was revealed. Electron content measurements were used to monitor the protonosphere with good time resolution. Protonospheric storms were observed with this technique. Slab thickness data obtained from content measurements were used to determine the neutral air temperature in the thermosphere.
Document ID
19730019714
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Darosa, A. V. (Stanford Univ. CA, United States)
Date Acquired
September 2, 2013
Publication Date
June 1, 1973
Subject Category
Geophysics
Report/Patent Number
TR-15
NASA-CR-133475
SU-SEL-73-022
Accession Number
73N28446
Funding Number(s)
CONTRACT_GRANT: NGR-05-020-001
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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