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.
Version:2.2.0
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.
| Role | Person | StartDate | StopDate | Note | |
|---|---|---|---|---|---|
| 1. | PrincipalInvestigator | spase://SMWG/Person/Donald.B.Muldrew |
Information about the Sweep-Frequency Sounder on Alouette 2