radar
Echolocation via radio
Radar is a system that detects objects by bouncing radio waves off them and measuring the reflections—used for tracking aircraft, ships, weather patterns, and vehicle speeds.
The word comes from "radio detection and ranging." Figuratively, to be on someone's radar is to have their attention; to fly under the radar is to go unnoticed.
Broadcast signal receiver
- transceiverDual-function communication device
- transmitterSignal-emitting device
- receiverOne who accepts transmission
- microwaveRadiation-based kitchen heater
electromagnetic · pulse · Doppler · clutter · ground-penetrating · frequency · bandwidth · wavelength
Message-conveying cue
- targetObject of pursuit
- trackingMonitoring location over time
- rangeExtent of variation
- blipMomentary signal flash
echo · signature · sweep · return · contact · ping · scope · screen
State of perceiving reality
- perceptionMental interpretation of stimuli
- attentionFocused mental awareness
- noticeBecome aware of
- consciousnessState of sentient awareness
alertness · mindfulness · vigilance · intuition · sensitivity · antenna · screen
Systematic observation of subjects
- targetingSelecting as objective
- AWACSAerial radar surveillance acronym
- NORADAerospace warning command
- stealthSecret, undetected movement
jamming · countermeasures · reconnaissance · tracking · missile · defense · combat · tactical
Motion-caused frequency change
- precipitationAtmospheric water deposit
- reflectivityLight-bouncing capacity
- stormSevere atmospheric disturbance
- forecastPrediction of future conditions
meteorology · tracking · hurricane · tornado · cloud · rainfall · hail · NWS
Signal-activated transmitter
- altimeterInstrument measuring elevation
- avionicsAircraft electronic equipment
- approachWay of handling something
- glidepathAircraft descent trajectory
tower · landing · terrain · cockpit · flight · turbulence · airspace · squawk
antenna
Broadcast signal receiver
- transceiverDual-function communication device
- transmitterSignal-emitting device
- receiverOne who accepts transmission
microwave · electromagnetic · pulse · Doppler · clutter · ground-penetrating · frequency · bandwidth · wavelength · polarization
signal
Message-conveying cue
blip · echo · signature · sweep · return · contact · ping · scope · screen · display
awareness
State of perceiving reality
- perceptionMental interpretation of stimuli
- attentionFocused mental awareness
- noticeBecome aware of
consciousness · alertness · mindfulness · vigilance · intuition · sensitivity · antenna · screen
surveillance
Systematic observation of subjects
stealth · jamming · countermeasures · reconnaissance · tracking · missile · defense · combat · tactical · SIGINT
Doppler
Motion-caused frequency change
- precipitationAtmospheric water deposit
- reflectivityLight-bouncing capacity
- stormSevere atmospheric disturbance
forecast · meteorology · tracking · hurricane · tornado · cloud · rainfall · hail · NWS · thunderstorm
transponder
Signal-activated transmitter
- altimeterInstrument measuring elevation
- avionicsAircraft electronic equipment
- approachWay of handling something
glidepath · tower · landing · terrain · cockpit · flight · turbulence · airspace · squawk · blip
speeding
Exceeding posted velocity limits
highway · detector · gun · officer · citation · camera · roadside · clocking · pursuit · fine
navigation
Determining position and course
vessel · harbor · buoy · coastguard · shipping · fog · bridge · helm · mariner · seafaring
- weather termssunny, rainy, cloudy, stormy, snowy
- aviation termstower, runway, landing strip, flight plan, transponder
- defensedefense, defending, protecting, protection, security
- military termsarmy, navy, air force, marines, soldier
- Palindromesmom, dad, pop, noon, level
- detection methodsMRI, ultrasound, DNA testing, fingerprinting, blood test
radarvisual observation
Gathering data by looking
naked eye · sonar · thermal imaging · eyesight · radarless
radaroff the radar
Beyond monitoring or awareness
under the radar · invisibility · obscurity · undetected · stealth
radarstealth
Secret, undetected movement
invisibility · radarless · stealth technology · undetectability · cloaking
- radio stationFacility transmitting audio programming
- flies under the radarEvades scrutiny or notice
- under the radarUndetected by scrutiny
- radio jingleBrief broadcast promotional tune
- car radioIn-dash audio receiver
- off the radarBeyond monitoring or awareness
radio, radios, radars, radioing, radar gun, radarscope, radar guns