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Building and Testing a Portable VLF ReceiverUnwanted emissions or signal noise is a major problem for VLF radio receivers. These can occur from man made sources such as power line hum, which can be prevalent for many harmonics after the fundamental 50 or 60 Hz AC source or from VLF radio transmissions such as LORAN, used for navigation and communications. Natural emissions can also be detrimental to the quality of recordings as some of the more interesting natural emissions such as whistlers or auroral chorus may be drowned out by the more common sferic emissions. VLF receivers must selectively filter out unwanted emissions and amplify the filtered signal to a record-able level without degrading the quality.
Document ID
Acquisition Source
Marshall Space Flight Center
Document Type
McLaughlin, Robert
(University of Central Lancashire, Preston Lancashire, United Kingdom)
Krause, L.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
March 6, 2015
Publication Date
December 15, 2014
Subject Category
Communications And Radar
Report/Patent Number
Meeting Information
Meeting: American Geophysical Union (AGU) Fall Meeting
Location: San Francisco, CA
Country: United States
Start Date: December 15, 2014
End Date: December 19, 2014
Sponsors: American Geophysical Union
Funding Number(s)
Distribution Limits
Public Use Permitted.
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