What word are the basis of sonar

so = sound

na = navigation

r = ranging

In world "sonar" basic are sound, navigation and ranging.

Explanation:

Sonar is a system for navigation, communication and detection under the water. This is an electroacoustic device for looking and finding underwater objects. World "sonar" is an acronym, so are from word "sound", na are from world "navigation" and r are from world "ranging".