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http://dx.doi.org/10.7776/ASK.2013.32.6.532

Receiving Signal Level Measurement Based Weighting Method for Broadband Energy Detection  

Kang, TaeSu (LIG Nex1 Maritime연구소)
Kim, Youngshin (LIG Nex1 Maritime연구소)
Kim, Yong Guk (LIG Nex1 Maritime연구소)
Moon, Sang-Taeck (LIG Nex1 Maritime연구소)
Publication Information
The Journal of the Acoustical Society of Korea / v.32, no.6, 2013 , pp. 532-540 More about this Journal
Abstract
In this paper, we propose the modified SED (Subband Energy Detection) which can assign weights adapting to the receiving signal level for the broadband energy detection in the passive SONARs. SED which is one of the broadband processing mainly employed by passive SONARs to detect a target is more robust against interference like multi signals or a clutter than CED (Conventional Energy Detection), but it degrades detection performance to assign weights independent of extracted extrema level of the receiving signal. Therefore, in this paper, the weighting method which can efficiently assigns rewards or penalties adapting to extracted extrema level of the receiving signal is proposed. In order to evaluate the performance of proposed method, we conducted experiments by using simulation and real ocean acoustic signal which is acquired from Yellow Sea. From the experiments, our proposed method has shown better performance than conventional SED.
Keywords
Subband extrema energy detection; Subband energy detection; Broadband processing; Passive SONAR;
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