2.2.2 spase://VWO/NumericalData/Cluster-Tango/WHISPER/PT52S Cluster 4 WHISPER Active Electric Power Spectral Density Cluster Tango WHISPER Electric Power Spectral Density under Sounding Mode C4_CP_WHI_ACTIVE 2012-11-02T04:00:48Z The Waves of HIgh frequency and Sounder for Probing of Electron density by Relaxation (WHISPER) performs the measurement of the electron density on the four satellites of the Cluster project. The two main purposes of the WHISPER experiment are to record the natural waves and to make a diagnostic of the electron density using the sounding technique. The various working modes and the fourier transforms calculated on board provide a good frequency resolution obtained in the bandwidth 2-83 kHz. Onboard data compression by the Digital Wave Processing (DWP) intrument allows a good dynamic and level resolution of the electric signal amplitude. Users of the Cluster WHISPER data are encouraged to acknowledge the instrument team and ESA Cluster Active Archive when using this data spase://SMWG/Person/Jean-Louis.Rauch PrincipalInvestigator spase://SMWG/Person/Jean-Gabriel.Trotignon FormerPI spase://SMWG/Person/Pierrette.Decreau FormerPI Cluster Active Archive Documentation Page http://caa.estec.esa.int/caa en spase://SMWG/Repository/CAA Online Restricted Access to Cluster WHISPER CEFs and CDFs http://caa.estec.esa.int/caa/home.xml/ Access to repository of Cluster 4 WHISPER data in Cluster Exchange Format (CEF) and CDF at the Cluster Active Archive en Text.ASCII None Users of the Cluster WHISPER data are encouraged to acknowledge the instrument team and ESA Cluster Active Archive when using this data Calibrated C1_CP_WHI_NATURAL spase://SMWG/Instrument/Cluster-Tango/WHISPER Waves.Passive Waves.Active ElectricField 2000-08-16T12:39:00Z -P7D PT52S RadioFrequency Earth.Magnetosphere Earth.Magnetosphere.Magnetotail Earth.Magnetosphere.RadiationBelt Earth.Magnetosheath Earth.NearSurface.Plasmasphere Earth.NearSurface.AuroralRegion Earth.NearSurface.PolarCap Heliosphere.Inner Dynamic Spectrogram AKR Auroral hiss Auroral Kilometric Radiation Chorus Continuum radiation Equatorial Noise Kilometric Continuum radiation Plasmaspheric Hiss Terrestrial Kilometric Radiation TKR Very Long Baseline Interferometry VLBI Langmuir Waves Type III Solar Bursts Electostatic Solitary Waves ESW Whistlers Ion Acoustic Waves Bernstein Waves Upper Hybrid Waves Lower Hybrid Waves Universal Time time_tags__C4_CP_WHI_ACTIVE Interval centred time tag s Temporal Delta Delta__C4_CP_WHI_ACTIVE Delta. Half of the number of seconds corresponding to the sampling interval + the uncertainty of the time tags s Other Receiving antenna Receiving_Antenna__C4_CP_WHI_ACTIVE Receiving antenna Ey or Ez Other Electric Spectral Power Density Electric_Spectral_Power_Density__C4_CP_WHI_ACTIVE Electric Spectral Power Density Vrms^2*m^-2*Hz^-1 PlasmaWaves ACElectricField RadioFrequency 2 80 kHz Spectral Frequencies Spectral_Frequencies__C4_CP_WHI_ACTIVE Spectral Frequencies between 1.953 and 79.915 kHz, that is to say the frequencies corresponding point to point to the 512 elements of the fixed size spectrum" kHz Other Table Number Table_Number__C4_CP_WHI_ACTIVE Frequency Swept Table Number between 0 and 127 Other Sounding Interval Sounding_Interval__C4_CP_WHI_ACTIVE Time interval between two successive emission pulses in unit of 40/3 (=13.3)ms. 0: 1 unit (13.3 ms) ; 1: 2 units (26.6 ms); 2: 3 units (40 ms); 3: 5 units (66.6 ms); 4: 8 units (106.6 ms); 5: 40 units+2106.66 ms waiting+256 units+2446.66 ms waiting (8.5 s) ; 6: 6 units+45 ms waiting (125 ms); 7: 14 units+63.34 ms waiting (250 ms) ms Other Emission/Reception Delay Emission_Reception_Delay__C4_CP_WHI_ACTIVE Delay between the leading edge of the emission pulse and the starting edge of the associated reception (acquisition time interval) ms Other Gain Change Number Gain_Change_Number__C4_CP_WHI_ACTIVE Number of gain changes during the acquisition Other Mantissa Mantissa__C4_CP_WHI_ACTIVE First part of the compressed value which is a fixed point integer defined in the compression algorithm Other Exponent Exponent__C4_CP_WHI_ACTIVE Second part of the compressed value Other