Statements (28)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:radar
|
| gptkbp:alsoKnownAs |
over-the-horizon radar
|
| gptkbp:detects |
gptkb:aircraft
ships sea state targets beyond line of sight |
| gptkbp:developedBy |
1950s
|
| gptkbp:example |
gptkb:Jindalee_Operational_Radar_Network
WERA radar system |
| https://www.w3.org/2000/01/rdf-schema#label |
Surface wave radar
|
| gptkbp:limitation |
limited resolution compared to microwave radar
sensitive to ionospheric conditions |
| gptkbp:measures |
wave height
wind direction ocean surface currents |
| gptkbp:operatesIn |
HF band
frequencies between 3 and 30 MHz |
| gptkbp:range |
over the horizon
|
| gptkbp:requires |
large antenna arrays
|
| gptkbp:usedBy |
gptkb:aircraft
gptkb:military |
| gptkbp:usedFor |
oceanography
border security maritime surveillance |
| gptkbp:uses |
ground wave propagation
surface electromagnetic waves |
| gptkbp:bfsParent |
gptkb:radar
|
| gptkbp:bfsLayer |
4
|