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• n  measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects

• As World War II approached, Watson-Watt's "radiolocation," now sponsored by the Air Ministry, became a top military secret.
• The Nazis' radiolocation positions on the coast were ferreted out (partly, of course, through Intelligence) and smashed so thoroughly by attack bombers that the defenders were .
• British industry has led the world in many new technical developments, such as radiolocation.

• radar
• microwave radar
• radio detection and ranging

News & Articles

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• New Indoor Navigation Technologies Work Where GPS Can’t
  GPS doesn’t work indoors, but other radiolocation methods are coming to a smartphone near you
  Nov. 20, 2013 - IEEE Spectrum

Quotes

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• Sergei Ivanov in New York Times
  In the announcement of Mr. Feklisov's death, Mr. Ivanov said: "He conducted serious missions related to the procurement of secret scientific and technical information, including in the area of electronics, radiolocation and jet aircraft...