sonar Synonyms

asdic echolocation echo sounder depth sounder beeping soundman car alarm sonic depth finder depth finder homing device echosounder fathometer echo-location system sounding device scanning system car warning device sonars direction finding consolan viewfinder telescopic sight dolphin facility echo sounding chronometer chirper buzzer blow beam bathometer batting alert detector finder bombsight beeper gunsight celestial navigation astronavigation radar sight periscope alarm