Instrument: WHISPER : Waves of High Frequency and Sounder for Probing Electron Density by Relaxation
	Instrument Category: Solar/Space Observing Instruments Instrument Class: Magnetic Field/Electric Field Instruments

Associated Platforms CLUSTER-II Related Data Sets View all records related to this instrument Description WHISPER (Waves of HIgh frequency and Sounder for Probing of Electron density by Relaxation) is one of the five wave instruments present on board each of the four CLUSTER spacecraft. It measures, in the 2 - 80 kHz range, the electric field fluctuations issued from distant or local sources. By operating a relaxation sounder, an active radio technique, the frequency position of the plasma resonance is identified, leading to the reliable measurement of the absolute density of the total electron population. See: http://lpce.cnrs-orleans.fr/gb/gb_experim/i_exper.htm Online Resources http://lpce.cnrs-orleans.fr/www_experim/experim_espace_whisper_fr.php http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=2000-041B&ex=11 http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=33024&fbodylongid=1110 Instrument Logistics Data Rate: 0.98 kbps Instrument Start Date: 2000-07-16 Instrument Owner: Laboratoire de Physique et Chimie de l'Environnement, France