DocumentCode :
2812782
Title :
Directivity Index of Partially Random Sonobuoy Arrays
Author :
Thorn, J.V. ; Booth, N.O. ; Lockwood, J.C.
Author_Institution :
Naval Ocean Systems Center, San Diego, CA, USA
fYear :
1979
fDate :
17-19 Sept. 1979
Firstpage :
40
Lastpage :
43
Abstract :
The directivity index, DI, of partially random arrays is analyzed. A partially random array is an array in which the element positions are random variables subject to constraints that create some degree of either non-randomness or interdependence. The analysis is based on the definition of DI as the ratio in decibels of the power received by a single omnidirectional hydrophone of unity gain to the array power normalized to unity maximum gain. The array power is a random variable. Its expected value is used in the definition of DI to define the "nominal DI". The variance of the array power provides a measure of the variability of the DI among the members of an ensemble.
Keywords :
Acoustic arrays; Analysis of variance; Delay; Oceans; Pattern analysis; Power measurement; Probability density function; Random variables; Sea measurements; Sonar equipment;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
OCEANS '79
Conference_Location :
San Diego, CA, USA
Type :
conf
DOI :
10.1109/OCEANS.1979.1151264
Filename :
1151264
Link To Document :
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