free-space radar equation

free-space radar equation

[′frē ‚spās ′rā‚där i‚kwā·zhən]
(electromagnetism)
Equation that governs a radar signal characteristic when it is propagated between a radar set and a reflecting object or target in otherwise empty space.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.