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Vol. 162, Issue 1, January 2014, pp. 70-75

 

Bullet

 

Approximate Error Analysis of Acoustic Passive Directing with Cross Array Based
on Piezoelectric Transducers
 

Fei XU

Kunming Shipborne Equipment Research and Test Center, Kunming, 650051, China

E-mail: yinuo@mail.ustc.edu.cn

 

Received: 11 October 2013 /Accepted: 9 January 2014 /Published: 31 January 2014

Digital Sensors and Sensor Sysstems

 

Abstract: The four-element cross array is consisted of four piezoelectric transducers arranged in the form of cross. Passive directing with cross array is a very useful method for acoustic target detecting. This paper presented the algorithm of acoustic passive directing with cross array based on time delay estimation, and accurate formula and approximate formula for calculating the target’s direction were proposed. The extent of application for approximate formula was suggested through analyzing the approximate error. The paper provided a basis for choosing the appropriate size of four- element cross array in practical engineering application.

 

Keywords: Four-element cross array, Piezoelectric transducers, Acoustic passive directing, Time delay estimation, Approximate error.

 

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