| Fast direction of arrival estimation of wideband sources in unknown correlated noise fields |
| |
| 引用本文： | DAI Zhengjian LIU Yun LI Zhishun. Fast direction of arrival estimation of wideband sources in unknown correlated noise fields[J]. 声学学报：英文版, 2006, 25(2): 184-192 |
| |
| 作者姓名： | DAI Zhengjian LIU Yun LI Zhishun |
| |
| 作者单位： | College of Marine engineering, Northwestern Polytechnical University Xi＇an 710072 |
| |
| 摘 要： | A computational efficient wideband Direction of Arrival (DOA) estimation method in the presence of unknown correlated noise is presented. A fast Two-sided Correlation Transformation (TCT) focusing matrix that transforms only the signal subspace is developed firstly, and then the propagator method is utilized to compute the focusing matrix and noise correlation matrix. In contrast to conventional wideband DOA estimation method, the proposed method requires only linear operation but does not involve any eigenvelue-decomposition to estimate the focusing matrix; it has a lower computational load, especially when the sensor number is greater than the source number. Because noise correlation matrix is estimated and eliminated from the array correlation matrix, the accuracy of DOA estimation is improved even in the presence of unknown correlation noise. Computer simulation results verified the efficiency of the method.
|
| 关 键 词： | 多频率源 未知相关噪声场 快速双边相关转化 信号子空间 水声学 |
| 收稿时间： | 2005-07-14 |
| 修稿时间： | 2005-07-142005-10-21 |
Fast direction of arrival estimation of wideband sources in unknown correlated noise fields |
| |
| DAI Zhengjian,LIU Yun,LI Zhishun. Fast direction of arrival estimation of wideband sources in unknown correlated noise fields[J]. Chinese Journal of Acoustics, 2006, 25(2): 184-192 |
| |
| Authors: | DAI Zhengjian LIU Yun LI Zhishun |
| |
| Abstract: | |
| |
| Keywords: | |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
