空时二维谱估计算法的分析与仿真  

Analysis and Simulation of 2-D Spatial-Temporal Spectrum Estimation Algorithm

作　　者：李成[1] 舒勤[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065

出　　处：《通信技术》2009年第11期22-24,共3页Communications Technology

摘　　要：文中首先介绍了阵列信号模型,分析了空时二维谱估计的原理。指出可以充分利用空域与时域处理的特点来提高空间谱估计算法的性能。相对于一维谱估计而言,二维谱估计的最大优点在于可以处理信源数大于阵源数的信号参数估计问题。通过仿真结果可以看出,算法可以很好的估计入射信号的频率和方位角,验证了所提算法的有效性。The model of array signal is described first, and then the principle of 2-D spatial-temporal spectrum estimation is analyzed. The performance of spatial spectrum estimation could be improved by taking full advantage of spatial-domain and temporal domain. Relative to one-dimensional spectral estimation, the 2-D spectrum estimation could estimate the signal with signal source number greater than that of array source. The simulation results show that the frequency and azimuth angle of the incident signals could be well estimated by the proposed algorithm, and the proposed algorithm is practicable and effective.

关 键 词：阵列信号 空时二维谱估计 频率 方位角 

分 类 号：TN911[电子电信—通信与信息系统]