2.1.0 spase://SMWG/Instrument/CNOFS/VEFI C/NOFS Vector Electric Field Instrument (VEFI) VEFI 2019-05-05T12:34:56Z The Vector Electric Field Instrument (VEFI) on the Communication/Navigation Outage Forecasting System (C/NOFS) satellite consists of one central electronics box that receives inputs from three orthogonal 20m tip-to-tip electric field double probe antennas, a fixed-bias Langmuir probe, a fluxgate magnetometer, and an optical lightning detector. All of the instruments were designed, built, and tested at the Goddard Space Flight Center with the exception of the lightning detector that was designed at the Univ. of Washington, and fabricated and tested at Goddard. The VEFI instrument is thus one experiment with many sensors to measure the AC and DC electric fields related to plasma shift and irregularity development in the ionosphere. spase://SMWG/Person/Robert.F.Pfaff PrincipalInvestigator NSSDC's Master Catalog https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=2008-017A-02 Information about the VEFI on C/NOFS Antenna LangmuirProbe Magnetometer ScintillationDetector Vector Electric Field Instrument (VEFI) on C/NOFS spase://SMWG/Observatory/CNOFS