摘要
智能天线的一项核心技术是波达方向(Direction of Arrival,DOA)的估计,它在无线定位的应用领域中有着十分重要的意义.为了对信号的DOA作出精确的估计,提出一种基于空间平滑技术的改进型MUSIC(Multiple Signal Classification)算法.仿真结果表明经典的MUSIC算法只能对非相干信号的DOA作出精确的估计,而改进型MUSIC算法对相干信号的DOA也能作出精确的估计.
The core technology of smart antenna is DOA estimation. It is important in the application field of wireless location. In order to get accurate DOA estimation of signals, a modified MUSIC algorithm is proposed based on the spatial smoothing technology. The simulation results show that the classical MUSIC algorithm can only get accurate DOA estimation of incoherent signals, while modified MUSIC algorithm can also get accurate DOA estimation of coherent signals.
出处
《陕西科技大学学报（自然科学版）》
2009年第1期97-101,共5页
Journal of Shaanxi University of Science & Technology
