DocumentCode :
905347
Title :
Nonlinear plasma effects in the Alouette recordings
Author :
Hartz, T.R. ; Barrington, R.E.
Author_Institution :
Communications Research Centre, Ottawa, Canada
Volume :
57
Issue :
6
fYear :
1969
fDate :
6/1/1969 12:00:00 AM
Firstpage :
1108
Lastpage :
1113
Abstract :
Recordings from the ionosonde receivers in the Alouette II satellite commonly show narrow-band, resonant-like signals at frequencies below the fundamental ionospheric resonances, fH, fN, and fT. These are attributed to nonlinear processes in the plasma near the spacecraft, and the on-board electronic equipment: studies of these signals are reviewed in this paper. Particular attention is given to the subsidiary resonances, which appear at simple fractions of the ionospheric resonances. It is shown that an explanation involving harmonic stimulation of the plasma resonances and beat-frequency generation is consistent with most of the observations. Several other types of satellite data are also examined and further substantiation is found for nonlinear plasma behavior. The importance of ionospheric nonlinearities is discussed briefly for both transmission and reception of radio signals in space.
Keywords :
Electronic equipment; Frequency; Interference; Ionosphere; Narrowband; Plasmas; Radio transmitters; Resonance; Satellite broadcasting; Space vehicles;
fLanguage :
English
Journal_Title :
Proceedings of the IEEE
Publisher :
ieee
ISSN :
0018-9219
Type :
jour
DOI :
10.1109/PROC.1969.7162
Filename :
1449092
Link To Document :
بازگشت