Statements (21)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
scientific instrument
|
| gptkbp:detects |
reflected radio waves from ionosphere
|
| gptkbp:developedBy |
1930s
|
| https://www.w3.org/2000/01/rdf-schema#label |
ionosondes
|
| gptkbp:measures |
critical frequency of ionospheric layers
virtual height of ionospheric layers |
| gptkbp:operates |
transmitting radio waves vertically
|
| gptkbp:output |
gptkb:ionogram
|
| gptkbp:relatedTo |
gptkb:ionosphere
space weather radio propagation |
| gptkbp:usedBy |
gptkb:military
meteorologists space scientists |
| gptkbp:usedFor |
measuring ionospheric properties
monitoring ionospheric conditions studying ionospheric electron density |
| gptkbp:usedIn |
space weather monitoring
radio communication research |
| gptkbp:bfsParent |
gptkb:ionosphere
|
| gptkbp:bfsLayer |
4
|