Performance comparison of cross correlation and filled aperture imaging riometers

Hagfors, T. and Grill, M. and Honary, F. (2003) Performance comparison of cross correlation and filled aperture imaging riometers. Radio Science, 38 (6). 17/1-17/5. ISSN 0048-6604

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Abstract

In striving for ever greater angular resolution in riometer (relative ionospheric opacity meter) observations it is tempting to try to use a nonfilled array to reduce the cost of antenna elements. We analyze as an example the Mills Cross configuration, compare its performance as a riometer with that of a filled square array of the same angular resolution and inquire about the penalty of using a sparsely filled array. We find that the susceptibility to interference from sources in the sidelobes is greater than in the filled array, that strong point sources in the sidelobes can cause both positive and negative excursions in the output and that the noise performance is inferior and requires longer integration times for a given rms error than the filled array.

Item Type:
Journal Article
Journal or Publication Title:
Radio Science
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3105
Subjects:
?? riometer dcs-publications-idart-568dcs-publications-creditsariesionodcs-publications-personnel-id56525instrumentationcomputers in earth sciencesgeochemistry and petrologycomputer networks and communicationsgeophysicsatmospheric sciencet technology (genera ??
ID Code:
6630
Deposited By:
Deposited On:
21 Apr 2008 11:22
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Jul 2024 11:27