Results 271 to 280 of about 5,046,171 (299)

Student experiment for measure of target strength

The Journal of the Acoustical Society of America, 2017
The target strength is a measurement of the reflection coefficient of a sonar target. Its value and feature is very important to detection and identification in active sonar, especially for fish by fishery acoustic students. A steel cylindrical shell is used as the target, whose outer diameter 194 mm, inner diameter 184 mm, length 500 mm, and both end ...
Zhengliang Cao, Jianfeng Tong, Wei Shen
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A Review of Target Strength Estimation Techniques

1989
In recent years, much work has been done to determine the target strength of marine organisms. This effort has been motivated by the extensive use of acoustic techniques to obtain population abundance estimates of fish stocks [1,2]. There has also been an increasing interest in the use of acoustic techniques to study and quantify crustacean and ...
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Target strength

1992
David N. MacLennan, E. John Simmonds
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Near Field Target Strength Measurements

1989
In this paper acoustical data-acquisition and processing techniques adopted from seismic exploration will be used for sonar applications such as detection of pipelines, barrels or shipwrecks which can be burried in sand. The detectability of such an object depends on the propagation path between sonar transducer and object and the target strength of ...
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Acoustic Target Strength of Submarines

Warship 91- Naval Submarines, 1991
Martin Almgren, Mats Nordin
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TARGET STRENGTH OF SARGASSOM

Progress in Fisheries Acoustics 1989
K SHIBATA, H TAKAYAMA
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Influence of target strength on the penetration depth of shaped charge jets into RHA targets

International Journal of Mechanical Sciences, 2018
Ahmed Elbeih, Tamer Elshenawy, Q M Li
exaly  

HRM System Strength and HRM Target Achievement—Toward a Broader Understanding of HRM Processes

Human Resource Management, 2017
Sven Hauff, Nina Katrin Hansen
exaly  

The acoustic target strength of fish

Radio and Electronic Engineer, 1967
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An expanded target-strength relationship for herring

ICES Journal of Marine Science, 2003
Egil Ona
exaly