2.4.0 spase://CNES/NumericalData/CDPP-Archive/Cluster-4/WHISPER/CLU_C4_WHI_PASSIVE_ACTIVE CLU4 WHISPER passive electric power spectral density when in sounding mode https://doi.org/10.24400/802406/ysjt-18nj 2022-02-22T17:30:23Z This dataset contains the electric power spectral density determined on Cluster-4 during passive sweeps of the WHISPER sounder which occur when the sounder is nominally active. These passive sweeps are interspersed with active sweeps to assist the identification of plasma resonances by comparison of active and passive sweeps adjéacent in time. These sweeps are certainly not active sweeps, but neither are they all 100% free of echoes from nearby active sweeps. The following support parameters are provided : Receiving antenna used, Ey or Ez Spectral Frequencies between 1.953 and 79.915 kHz, that is, the frequencies corresponding point-to-point to the 512 elements of the fixed size spectrum Frequency Table Number between 0 and 127 Time interval between two successive emission pulses in units 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). Delay between the acquisition intervals used to form the passive spectrum information and the acquisition intervals used to form the correponding active spectrum information Number of gain changes during the acquisition First part of the compressed value which is a fixed point integer defined in the compression algorithm Second part of the compressed value spase://CNES/Person/CDPP-Archive/Pierrette.Decreau PrincipalInvestigator spase://CNES/Person/CDPP-Archive/Patrick.Canu CoInvestigator spase://CNES/Repository/CDPP-Archive/REGARDS-CDPP Online REGARDS https://regards.cnes.fr/user/cdpp/modules/1777?sp=DatasetName;q=DatasetName:CLU_C4_WHI_PASSIVE_ACTIVE Access via CNES Data Archive for CDPP CEF spase://CNES/Instrument/CDPP-Archive/Cluster-4/WHISPER Waves.Active Waves.Passive ElectricField 2001-02-01T00:00:00Z 2019-12-31T00:00:00Z Earth.Magnetosheath Earth.Magnetosphere Earth.Magnetosphere.Magnetotail Earth.Magnetosphere.Main Earth.Magnetosphere.Polar Earth.Magnetosphere.RadiationBelt Earth.NearSurface.AuroralRegion Earth.NearSurface.Ionosphere Earth.NearSurface.Plasmasphere Earth.NearSurface.PolarCap Heliosphere.NearEarth Cluster 4 WHISPER Electric Spectral Power Density in sounding mode Cluster 4 WHISPER Electric Spectral Power Density in sounding mode V^2*m^-2*Hz^-1 PlasmaWaves Spectral ACElectricField 2 80 kHz