2.0.2 spase://SMWG/Instrument/CHAMP/DIDM Digital Ion Drift Meter 2010-02-02T20:52:14Z The Digital Ion Drift Meter was provided by the Air Force Research Laboratory, Hanscom AFB, USA. It determines ion distributions and moments (density, temperature, drift velocity) and can be used in computing V x B electric fields. There is a companion Planar Langmuir Probe used for spacecraft potential and electron density and temperature determinations. The DIDM and PLP data are used to help separate internal-source and external-source magnetic field variations, the former being a primary focus of the mission. spase://SMWG/Person/Jens.Wickert GeneralContact GFZ CHAMP site site http://op.gfz-potsdam.de/champ/systems/index_SYSTEMS.html German Research Center for Geosciences of Potsdam web site for CHAMP mission, instruments, etc. IonDrift Digital Ion Drift Meter spase://SMWG/Observatory/CHAMP