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Related to Decca: Deca
A hyperbolic navigation system which establishes a line of position from measurement of the phase difference between two continuous-wave signals; the intersection of the two lines of position from two pairs of transmitting stations establishes a navigational fix, or location.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A trade name for an extinct long-range, ambiguous, two-dimensional radio navigation system that used continuous-wave transmission to provide hyperbolic lines of position, and position-fixing facilities, through the radio frequency phase comparison techniques from four transmitters. The system operated in the frequency band 68 to 150 kilocycles.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved