correlation, detection, and ranging

correlation, detection, and ranging

[‚kär·ə′lā·shən di′tek·shən ən ′rān·jiŋ] (ordnance) A method of detecting submerged submarines with sonobuoys dropped in a characteristic pattern from Navy P-3 aircraft, based on difference in time and phase of signals transmitted to the search plane by the sonobuoys. Abbreviated CODAR.