Performance Analysis and Algorithms Design for Direction-of-Arrival Estimation using Wideband Vector Sensor Array

• Main Authors: Sheng-Hsiung Huang, 黃聖雄
• Other Authors: Chiao-En Chen
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/33490866887012087455

碩士 === 國立中正大學 === 通訊工程學系 === 98 === Sensor array signal processing has been an area of great research interests in recent years. The major technique in the past is base on the narrowband signal processing using scalar sensors, which cannot exploit the diversity of frequency spectrum and the information embedded in the measured particle velocity, in order to improve the accuracy of DOA estimation, we try to extend narrowband technique using scalar sensors to wideband using vector sensors. We introduce wideband vector sensor model and perform the Cramer-Rao bound (CRB) and the mean-square angular error bound (MSAEB) analyses. We first extend the narrowband algorithm to wideband using the coherent signal subspace method (CSSM). In contrast to the RSS (rotational signal subspace), which need DOA information to form the focusing matrix, we propose the Modified BI-CSM to avoid this requirement. We then derived the maximum likelihood and MUSIC algorithm and propose two fast low complex algorithm base on the ESPRIT algorithm. Finally, we compare each algorithm of performance analysis by computer simulation.