|
gptkbp:instanceOf
|
gptkb:bar
gptkb:aviation_instrument
|
|
gptkbp:accuracy
|
within a few feet
|
|
gptkbp:alternativeName
|
radio altimeter
|
|
gptkbp:compatibleWith
|
gptkb:temperature
atmospheric pressure
|
|
gptkbp:component
|
gptkb: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
|
|
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
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Radar Altimeter (RA)
|