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First passive radar observations of auroral E‐region irregularities
Author(s) -
Lind Frank D.,
Sahr John D.,
Gidner Dawn M.
Publication year - 1999
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1999gl900457
Subject(s) - radar , doppler effect , remote sensing , geology , aliasing , range (aeronautics) , ridge , doppler radar , geodesy , physics , computer science , telecommunications , materials science , astronomy , paleontology , undersampling , composite material
On August 27, 1998 we observed auroral E‐region irregularities using the Manastash Ridge Radar system. These are the first radio science results from passive radar observations of commercial FM broadcasts near 100 MHz. These are also the first reported observations of 1.5 m irregularities in 15 years. The data show scatter most consistent with type‐1 and type‐3 ion‐acoustic turbulence as observed by 50 MHz and 140 MHz radars. The instrument is extraordinarily low in cost and provides data free of range and doppler velocity aliasing problems. The range and velocity resolution achieved by this radar is substantially superior to that of other comparable coherent scatter radars, and the time resolution is similar.