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http://dx.doi.org/10.7776/ASK.2012.31.5.280

A Study on Effective Output Control Technique for Rotational Transmission Beam Drive of Sonar Transmitter  

Lee, Byung-Hwa (국방과학연구소)
Publication Information
The Journal of the Acoustical Society of Korea / v.31, no.5, 2012 , pp. 280-287 More about this Journal
Abstract
This paper presents a study on the experimental analysis of the impedance characteristics according to the rotational direction of the transmission beam of a cylindrical sensor array. Besides, this suggests a real time control technique of the transmitter output for the effective maximum power transmission, in order to drive efficiently the rotational transmission beam of the active sonar transmitter. The output characteristics of the transmitter and the real-time impedance variations of the sensor array are analyzed under the overload conditions. They are caused by electric and acoustic boundary conditions when the rotational transmission beam is operated. From these results, a new output control method of the transmitter is proposed to protect the transmitter and its loads. It can maximize the output power without the transmission pause even if the transient phenomena occur. The proposed technique is verified from the experiment.
Keywords
Active sonar system; Rotational transmission beam; Sensor array; Transmitter; Transmission output control;
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