доплерівська сигналізація
Doppler effect / Doppler shift
wing-in-ground-effect amphibious craft; ground-effect vehicle (GEV); wing-in-ground-effect (WIG); ground-effect craft; wingship; flarecraft; ekranoplan
doppler frequency shift
pulse Doppler radar
Doppler navigation
Doppler navigator
Doppler radar
pulse-Doppler locator
Doppler beam sharpening (DBS)
Doppler echo indicator
Doppler processor
pulse-Doppler single target track mode
pulse-repetition frequency ranging Doppler radar
Doppler-inertial guidance navigational and attack system
Doppler null
pulse Doppler
pulse Doppler jamming
range gate pulse Doppler radar
alarm button
alarm placement
alarm system
alarm unit
audible alarm
automatic chemical agent alarm
gas alarm / warning
radio alarm signal
WMD alarm (weapon of mass destruction)
air raid siren / alarm
fire extinguishing system sprinkler system and fire alarm system
antitank alarm
assembly formation after an alarm
fire alarm bell