矢量水聽器陣列在分界面上的空間譜估計
Spatial Spectrum Estimation Using Vector Hydrophone Array in a Reflecting Boundary
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摘要: 矢量水聽器通常由3個空間軸向垂直的振速水聽器和1個聲壓水聽器構(gòu)成，可同時測量水聲信號的振速和聲壓。為了了解復(fù)雜分界面上矢量水聽器陣列的定向性能，根據(jù)分界面上平面波的反射模型，提出了改進的Bartlett和Capon空間譜，建立了統(tǒng)一框架，并且以絕對硬邊界為例，對矢量水聽器陣和聲壓水聽器陣的定向性能進行了比較。仿真實驗結(jié)果證明了該方法的正確性。
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關(guān)鍵詞:
- 矢量水聽器;陣列信號處理;空間譜;分界面;DOA估計
Abstract: The vector hydrophone is composed of three spatially co-located but orthogonal oriented velocity hydrophone plus another co-located pressure hydrophone. To understand the performance of DOA estimation using vector hydrophone array in a reflecting boundary, based on the reflecting model of plan acoustic wave, the improved Bartlett and Capon spatial spectrum are presented, and then the general frame is set up. The ability of DOA estimation using vector hydrophone array is also compared with that of pressure hydrophone array in rigid boundary. Finally numerical experimentatal results show its validity. -
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