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Alouette 2 Sweep-Frequency Sounder

ResourceID
spase://SMWG/Instrument/Alouette2/SFS

Description

The Alouette 2 Sweep-Frequency Sounder measured the ionospheric electron density in the altitude range 300 to 3000 km,
and extended the Alouette 1 measurements to higher altitudes and to a different period of the solar cycle. The ionosonde was a radio transmitter that recorded the time delay between a transmitted and returned radio-frequency pulse. A continuum of frequencies between 0.12 and 14.5 MHz was sampled once every 32 s.
The Alouette 2 sounder also provided greatly improved observations of plasma resonances. Several virtual-range (delay-time) traces resulting from ground reflections, plasma resonances, birefringence of the ionosphere, nonvertical propagation, etc., were normally observed.

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Details

Version:2.2.0

Instrument

ResourceID
spase://SMWG/Instrument/Alouette2/SFS
ResourceHeader
ResourceName
Alouette 2 Sweep-Frequency Sounder
AlternateName
Topside Sounder
ReleaseDate
2019-05-05 12:34:56Z
Description

The Alouette 2 Sweep-Frequency Sounder measured the ionospheric electron density in the altitude range 300 to 3000 km,
and extended the Alouette 1 measurements to higher altitudes and to a different period of the solar cycle. The ionosonde was a radio transmitter that recorded the time delay between a transmitted and returned radio-frequency pulse. A continuum of frequencies between 0.12 and 14.5 MHz was sampled once every 32 s.
The Alouette 2 sounder also provided greatly improved observations of plasma resonances. Several virtual-range (delay-time) traces resulting from ground reflections, plasma resonances, birefringence of the ionosphere, nonvertical propagation, etc., were normally observed.

Contacts
RolePerson
1.PrincipalInvestigatorspase://SMWG/Person/Donald.B.Muldrew
InformationURL
Name
NSSDC's Master Catalog
URL
Description

Information about the Sweep-Frequency Sounder on Alouette 2

InstrumentType
Sounder
InvestigationName
Sweep-Frequency Sounder on Alouette 2
ObservatoryID