radars
Blip-showing tracking systems
Radars is the plural of radar, a system that uses radio waves to detect objects and measure their distance, speed, or direction.
The word began as an acronym (radio detection and ranging) but is now fully naturalized.
Military radars tracked the incoming aircraft.
Figuratively, to be on someone's radar is to have their attention; off the radar means unnoticed or inactive.
Reflected sound wave
beam · range · reflection · Doppler · frequency · wavelength · antenna · transmitter
Signal-activated transmitter
Motion-caused frequency change
- precipitationAtmospheric water deposit
- reflectivityLight-bouncing capacity
- hurricaneViolent tropical windstorm
- rainfallWater falling from clouds
cloud · meteorology · forecasting · hail · thunderstorm · atmospheric
Radiation-based kitchen heater
- electromagneticInvolving electric and magnetic fields
- bandwidthData transmission capacity
- digitalOf discrete data
- real-timeOccurring without processing delay
imaging · 3D · solid-state · magnetron · waveguide
Aerial radar surveillance acronym
- NORADAerospace warning command
- targetingSelecting as objective
- lock-onAutomated target tracking
- jammingBlocking or wedging forcefully
countermeasures · over-the-horizon · ground-penetrating · chaff · decoy
echo
Reflected sound wave
pulse · beam · range · reflection · Doppler · frequency · wavelength · antenna · transmitter · receiver
transponder
Signal-activated transmitter
- airspaceRegulated overhead flight zone
- altitudeMeasured height above reference
- approachWay of handling something
departure · squawk · blip · sweep · screen · contact · bogey
Doppler
Motion-caused frequency change
- precipitationAtmospheric water deposit
- reflectivityLight-bouncing capacity
- hurricaneViolent tropical windstorm
rainfall · cloud · meteorology · forecasting · hail · thunderstorm · atmospheric
microwave
Radiation-based kitchen heater
- electromagneticInvolving electric and magnetic fields
- bandwidthData transmission capacity
- digitalOf discrete data
real-time · imaging · 3D · solid-state · magnetron · waveguide
AWACS
Aerial radar surveillance acronym
jamming · countermeasures · over-the-horizon · ground-penetrating · chaff · decoy
ship
Seagoing transport vessel
- vesselReceptacle for contents
- navigationDetermining position and course
- harborSafe anchorage for ships
port · coastguard · buoy · channel · nautical · bridge · pilot · fishing · iceberg · rescue
radarsvisual observation
Gathering data by looking
naked eye · eyesight · lookouts · spotters · direct observation
radarsstealth technology
Sensor-evading military engineering
cloaking devices · invisibility · stealth aircraft · cloaking · camouflage
- flies under the radarEvades scrutiny or notice
- under the radarUndetected by scrutiny
- off the radarBeyond monitoring or awareness
- on the radarCurrently being watched
- slips under the radarEvades notice or observation
- fly under the radarEvade attention deliberately