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Wideband noise observed at ground level in the auroral regionA sideband noise event was detected at ground level from the Andoya Rocket Range in Norway in January 1989. The signals were observed on four commercial communication receivers (tuned to 159, 515, 905, and 1200 kHz), an ionosonde (200-kHz to 3.5-MHz interference-free observations) and a riometer (32.5 MHz). The event, which occurred during a period of magnetic disturbance near magnetic midnight, was the only one observed during nearly 3 weeks of operations. This low frequency-of-occurrence is attributed partly to high local noise levels. The ease with which this event was identified on the ionograms produced by the local ionosonde suggests that routine ionosonde recordings should be inspected in search for such events. Such an effort would enhance existing research directed toward developing techniques for identifying quiet communication channels and help to identify the origin and frequency-of-occurrence of high-latitude wideband noise events.
Document ID
19910062646
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Benson, Robert F.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Desch, Michael D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 14, 2013
Publication Date
August 1, 1991
Publication Information
Publication: Radio Science
Volume: 26
ISSN: 0048-6604
Subject Category
Geophysics
Accession Number
91A47269
Distribution Limits
Public
Copyright
Other

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