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Faraday Rotation Measurements Using Incoherent Scatter
Author(s) -
Farley D. T.
Publication year - 1969
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs004i002p00143
Subject(s) - incoherent scatter , faraday effect , ionosphere , radar , physics , faraday cage , autocorrelation , polarization (electrochemistry) , optics , computational physics , remote sensing , geodesy , geology , mathematics , geophysics , computer science , statistics , telecommunications , chemistry , quantum mechanics , magnetic field
A complete description is given of the method used at the Jicamarca Radar Observatory to derive Faraday rotation information (and hence absolute electron density profiles that do not require subsequent normalization or correction for the effects of T e /T i ) from incoherent scatter data. Similar techniques which could be used at other observatories with radars not having the unusual properties of the Jicamarca radar are discussed. At temperate and polar latitudes the optimum frequencies for incoherent scatter Faraday measurements in most of the ionosphere are roughly 100–200 MHz. Somewhat higher frequencies should give acceptable daytime results, however. A slight modification of the Faraday measurement, used at Jicamarca to obtain the autocorrelation function of the scattered signal, is also briefly described.