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dc.contributor.authorTrotignon, J.G.
dc.contributor.authorDécréau, P.M.E.
dc.contributor.authorRauch, J.L.
dc.contributor.authorLe Guirriec, E.
dc.contributor.authorCanu, P.
dc.contributor.authorDarrouzet, F.
dc.date2003
dc.date.accessioned2017-05-03T10:27:41Z
dc.date.available2017-05-03T10:27:41Z
dc.identifier.urihttps://orfeo.kbr.be/handle/internal/5138
dc.descriptionThe WHISPER relaxation sounder that is onboard the four CLUSTER spacecraft has as its main scientific objectives to monitor the natural waves in the 2 kHz-80 kHz frequency range and, mostly, to determine the total plasma density from the solar wind down to the Earth's plasmasphere. To fulfill these objectives, the WHISPER uses the two long double sphere antennae of the Electric Field and Wave experiment as transmitting and receiving sensors. In its active working mode, the WHISPER works according to principles that have been worked out for topside sounding. A radio wave transmitter sends an almost monochromatic and short wave train. A few milliseconds after, a receiver listens to the surrounding plasma response. Strong and long lasting echoes are actually received whenever the transmitting frequencies coincide with characteristic plasma frequencies. Provided that these echoes, also called resonances, may be identified, the WHISPER relaxation sounder becomes a reliable and powerful tool for plasma diagnosis. When the transmitter is off, the WHISPER behaves like a passive receiver, allowing natural waves to be monitored. This paper aims mainly at the resonance identification process description and the WHISPER capabilities and performance highlighting.
dc.languageeng
dc.titleThe Whisper Relaxation Sounder Onboard Cluster: A Powerful Tool for Space Plasma Diagnosis around the Earth
dc.typeArticle
dc.subject.frascatiPhysical sciences
dc.audienceScientific
dc.subject.freeEarth atmosphere
dc.subject.freePlasma density
dc.subject.freePlasma waves
dc.subject.freeRadio waves
dc.subject.freeSignal receivers
dc.subject.freeSolar radiation
dc.subject.freeSounding rockets
dc.subject.freeSpacecraft
dc.subject.freeTransmitters
dc.subject.freePlasmasphere
dc.subject.freeSolar winds
dc.subject.freeWHISPER relaxation sounder
dc.subject.freeSpace research
dc.source.titleCosmic Research
dc.source.volume41
dc.source.issue4
dc.source.page345-348
Orfeo.peerreviewedYes
dc.identifier.doi10.1023/A:1025045308666
dc.identifier.scopus2-s2.0-3543077537


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