track-while-scan

track-while-scan

[¦trak ‚wīl ′skan]
(electronics)
Electronic system used to detect a radar target, compute its velocity, and predict its future position without interfering with continuous radar scanning.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

track-while-scan

track-while-scanclick for a larger image
The ability of radar to track a target while searching for other targets. This is done by having two unidirectional sector scans scanning simultaneously in two planes. One of these is usually vertical and the other horizontal. This allows targets common to both to be accurately tracked in azimuth and elevation, as well as in range. The targets that do not appear on both scans can be “in search” mode. This way the target is not alerted that it is being tracked.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
As examples, let's consider a ground-based search radar, a round-based track-while-scan (TWS) radar, an airborne-intercept (AI) radar in search mode, a tracking radar with a conical scan, and a tracking radar with scan on receive only.
As examples, let's consider a ground-based search radar, a ground-based track-while-scan (TWS) radar, an airborne-intercept (All radar in search mode, a tracking radar with a conical scan, and a tracking radar with scan on receive only.
Figure 4 shows the concept of a track-while-scan (TWS) radar using two fan beams.