New method of DOA Estimation for Coherent Sources Under Unknown Noise Field

摘要：

the major shortcomings of the MUSIC algorithm for direction-of-arrival (DOA) are that it performs poorly when the sources are highly and when the noise is unknown. A method was proposed to estimate DOA for coherent, noncoherent, and mixed narrowband signals under an unknown spatially noise environment, in this method, the forward-backward spatial smoothing algorithm was employed to decorrelate highly correlated sources and increase data amount, and a covariance matrix difference between the forwardbackward spatial smoothing for covariance matrix of the received data and its transform matrix was introduced to eliminate noise components from the array structure, then, the MUSIC spectral was constructed by eigenvalue decomposition the difference to estimate DOA of signal sources. The numerical result verified that the method is effective.

关键词： direction-of-arrival coherent sources forward-backward spatial smoothing MUSIC algorithm.

作者: Shujing Su Zenggang Wang Jinglong YAN

作者单位: School of Electronics and Computer Science and Technology,North University of China,Shanxi 030051,Ch North China System Engineering Institute,Beijing 100089,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 3797-3800

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）