ground-derived navigation data

ground-derived navigation data

[′grau̇nd də‚rīvd ‚nav·ə′gā·shən ‚dad·ə]
(navigation)
That data used in navigation and obtained by systems or parts of systems that are located on the ground or sea.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.