Statements (41)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:bar
aviation instrument |
| gptkbp:accuracy |
within a few feet
|
| gptkbp:alternativeName |
radio altimeter
|
| gptkbp:compatibleWith |
gptkb:temperature
atmospheric pressure |
| gptkbp:component |
glass cockpit
|
| gptkbp:criticalFor |
safe landing
automatic flight control systems helicopter hover operations |
| gptkbp:developedBy |
1930s
|
| gptkbp:enables |
automatic landing
ground proximity warning terrain following |
| https://www.w3.org/2000/01/rdf-schema#label |
Radar Altimeter (RA)
|
| gptkbp:inventedBy |
gptkb:Lloyd_Espenschied
|
| gptkbp:measures |
altitude above ground level
|
| gptkbp:operatesIn |
frequency range 4.2–4.4 GHz
|
| gptkbp:provides |
real-time altitude data
|
| gptkbp:regulates |
gptkb:Federal_Aviation_Administration
gptkb:International_Civil_Aviation_Organization |
| gptkbp:requires |
gptkb:aircraft
commercial airliners |
| gptkbp:subject |
radio frequency interference
5G wireless interference |
| gptkbp:usedFor |
oceanography
autopilot systems unmanned aerial vehicles topographic mapping precision approach low-level flight space probes earth observation satellites |
| gptkbp:usedIn |
gptkb:aircraft
gptkb:satellite helicopters |
| gptkbp:uses |
gptkb:radio_waves
|
| gptkbp:bfsParent |
gptkb:ERS-1_satellite
gptkb:ERS-2_satellite gptkb:ERS_satellites |
| gptkbp:bfsLayer |
6
|