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The Vector Electric Field Instrument on the C/NOFS SatelliteWe provide an overview of the Vector Electric Field Instrument (VEFI) on the Air Force Communication/Navigation Outage Forecasting System (C/NOFS) satellite, a mission designed to understand, model, and forecast the presence of equatorial ionospheric irregularities. VEFI is a NASA GSFC instrument designed 1) to investigate the role of the ambient electric fields in initiating nighttime ionospheric density depletions and turbulence; 2) to determine the electric fields associated with abrupt, large amplitude, density depletions and 3) to quantify the spectrum of the wave electric fields and plasma densities (irregularities) associated with density depletions or Equatorial Spread-F. The VEFI instrument includes a vector electric field double probe detector, a Langmuir trigger probe, a flux gate magnetometer, a lightning detector and associated electronics. The heart of the instrument is the set of double probe detectors designed to measure DC and AC electric fields using 6 identical, mutually orthogonal, deployable 9.5 m booms tipped with 10 cm diameter spheres containing embedded preamplifiers. A description of the instrument and its sensors will be presented. If available, representative measurements will be provided.
Document ID
20080031668
Document Type
Conference Paper
Authors
Pfaff, R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kujawski, J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Uribe, P. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bromund, K. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Fourre, R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Acuna, M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Le, G. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Farrell, W. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Holzworth, R. (Washington Univ. Seattle, WA, United States)
McCarthy, M. (Washington Univ. Seattle, WA, United States)
Rowland, D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
May 18, 2008
Subject Category
Electronics and Electrical Engineering
Meeting Information
12th International Symposium on Equatorial Aeronomy (ISEA)(Crete)
Distribution Limits
Public
Copyright
Other