target strength


Also found in: Acronyms.

target strength

[′tär·gət ‚streŋkth]
(acoustics)
A measure of the reflecting power of a sonar target, which is expressed in decibels by the equation E + 2 L-S, where E is the echo level, L is the total transmission loss, and S is the source level.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Step 1: Calculate Target Strength ([F.sub.t]) =[f.sub.ck] + 1.65 [S.sub.d] [f.sub.t] = Target average compressive strength of geopolymer concrete at 28 days.
From these results, it was confirmed that the optimum range of the superabsorbent polymer satisfying the target strength was 0.25%.
At 90th day, [f.sub.c] increased but was lower than the target strength of 24.13 MPa.
2013: Acoustic target strength measurement of banded grouper Epinephelus awoara (Temming & Schlegel, 1842) and threadsial filefish Stephanolepis cirrhifer (Temming & Schlegel, 1850) in the South China Sea.
<[TS.sub.i]> = its length-weighted mean target strength (TS; dB re 1 [m.sup.2] [kg.sup.-1]).
But the results (Fig: 2) show that the observed strength is even less than the target strength 12,800 psi (90MPa).
The world body has failed to acquire a dozen helicopters urgently needed by the mission, which so far only has one third of its target strength of 26,000 troops and police.
A Warwickshire police spokeswoman said: "This is a snapshot picture and highlights the way in which the force must manage police officer recruitment in order to achieve its target strength to police the county."
By using a pre-generated foam (using a specific foam generator), MBT was able to attain better flow properties with the same sand at 90% solids, and take a 50% reduction in cement to attain the target strength.
As recently as last March the Police Federation claimed that poor morale, bad pay and damaging publicity was plunging the Met into a recruitment crisis with the Yard admitting it was 700 officers down on its target strength.
Acoustic measurements indicated that fish at a school edge were larger (target strength [TS] = -44.7 dB, equivalent size = 19.3 cm) than nonschooling fish elsewhere (TS = -53.4 dB, equivalent size = 8.4 cm).
Part of the attraction of using sound was the w defy held assumption that the strength of the echo from an individual animal (the target strength) was largely dependent upon its size and little else.