electromagnetic reconnaissance
Also found in: Acronyms.
electromagnetic reconnaissance
[i¦lek·trō·mag′ned·ik ri′kän·ə·säns] (electronics)
Reconnaissance for the purpose of locating and identifying potentially hostile transmitters of electromagnetic radiation, including radar, communication, missile-guidance, and navigation-aid equipment.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.