NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
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
20150002522
Document Type
Presentation
Authors
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
M14-3837
Meeting Information
American Geophysical Union (AGU) Fall Meeting(San Francisco, CA)
Funding Number(s)
CONTRACT_GRANT: AGS-1157027
Distribution Limits
Public
Copyright
Public Use Permitted.

Available Downloads

NameType 20150002522.pdf STI
No Preview Available