Alouette-2 Topside Sounder Ionogram Data
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[
"026:00"
]
|
| contactPoint |
{
"fn": "NASA Space Physics Data Facility",
"@type": "vcard:Contact",
"hasEmail": "mailto:NASA-SPDF-Support@nasa.onmicrosoft.com"
}
|
| description | These ionograms were digitized from the original Alouette 2 7-track analog telemetry tapes using the facilities of the former Data Evaluation Laboratory at the NASA/GSFC. This data restoration project is headed by Dr. R.F. Benson (NASA/GSFC). Ionograms were digitized at the rate of 40,000 16-bit samples/sec. This sample rate is higher than the Nyquist frequency of 30 kHz. The sample frequency of 40 kHz provides a measurement every 25 microseconds corresponding to an apparent range (c*t/2) interval of 3.75 km. The ionograms consist of swept-frequency operation (there is no fixed-frequency operation as in ISIS-1 and ISIS-2). The time resolution between ionograms is typically 31 seconds. |
| distribution |
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|
| identifier | /SDE/SPASE_JSON/|811dc3681e0c304b4bdc903e067eb241 |
| keyword |
[
"akr",
"ducted-echoes",
"fai",
"field-aligned-irregularities",
"ground-echoes",
"ground-reflections",
"ionospheric-echoes",
"ionospheric-reflections",
"plasma-resonance",
"plasma-waves",
"solar-type-iii-bursts",
"spectrum-ionogram",
"swept-frequency-sounder",
"topside-ionosphere",
"topside-sounder",
"upper-hybrid-noise-band",
"wave-scattering",
"waves-active"
]
|
| license | https://www.usa.gov/government-works |
| modified | 2026-04-20 |
| programCode |
[
"026:000"
]
|
| publisher |
{
"name": "NASA Space Physics Data Facility (SPDF) Data Services",
"@type": "org:Organization"
}
|
| theme |
[
"Heliophysics"
]
|
| title | Alouette-2 Topside Sounder Ionogram Data |
