Choose the perfect synonym or antonym for the word

Radar

/ˈreɪdɑː/

A system that uses electromagnetic waves to detect objects and determine their distance, direction, or speed.

Synonyms:

It would likely put us on the Patriarch's radar."

Target-detection radar is green.

Peacetime cyclotrons and radar for air defense came first before superbombs.

Coined in 1940 as an acronym for Radio Detection And Ranging, the term radar was developed during World War II to describe this detection method.

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