對(duì)偶極子型聲矢量傳感器應(yīng)用于水聲目標(biāo)方位估計(jì)的信號(hào)處理方法進(jìn)行了分析和研究,
并采用傅立葉分解方法,將一般的窄帶信號(hào)偶極子定向處理方法推廣到寬帶,推導(dǎo)出了相應(yīng)的處理算法. 經(jīng)計(jì)算機(jī)模擬計(jì)算,在特殊角度用波束旋轉(zhuǎn)后,方位估計(jì)精度一般高于2°,海上試驗(yàn)也驗(yàn)
證了本文方法的有效性.
關(guān)鍵詞: 偶極子;矢量傳感器;方位估計(jì);水聲
Abstract : 　The application of dipole acoustic vector sensor to estimate the direction of arrive (DOA) signal was studied. The acoustic vector sensor signal processing of narrow2band was developed to wide2band pro2 cessing by the application of discrete Fourier transform. Methods used in determining DOA were derived. The computer simulation indicates that the estimation precision of DOA is mostly higher than 2°. The effi2 ciency of acoustic vector sensor signal processing algorithms are also demonstrated by the direction estimation of real underwater acoustic targets.
Key words : 　dipole ; vector sensor ; direction estimation ; underwater acoustic