radar altimetry area
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radar altimetry area[′rā‚där al′tim·ə·trē ‚er·ē·ə]
A large and comparatively level terrain area with a defined elevation which can be used in determining the altitude of airborne equipment by the use of radar.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.