topside sounder

topside sounder

[′täp‚sīd ¦sau̇n·dər]
(aerospace engineering)
A satellite designed to measure ion concentration in the ionosphere from above the ionosphere.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The ionospheric topside electron density profile can be obtained from topside sounder measurements or by theorematic models.