宽带相干信号二维波达方向估计新算法  

2-D Direction of Arrival Estimation for Wideband Coherent Signals

作　　者：解小华[1] 石要武[1] 黄家才[1] 

机构地区：[1]吉林大学通信工程学院,长春130022

出　　处：《系统仿真学报》2007年第18期4348-4352,共5页Journal of System Simulation

基　　金：吉林大学研究生创新中心资助(502039);吉林省高科技资助项目(20030519)。

摘　　要：提出一种新的宽带相干信号二维波达方向(DOA)估计算法。该方法充分利用了信号的循环平稳特性以及极化多样性,不仅解决了宽带相干源的二维波达方向估计问题,而且在阵列孔径一定的情况下,提高了对多相干源的处理能力。该方法能够抑制加性噪声以及宽带干扰的影响。仿真结果验证了该方法的有效性。A new algorithm for the 2-D direction of arrival （DOA） estimation of wideband coherent cyclostationary signals was proposed. By sufficiently utilizing the cyclostationarity and polarization diversity of the signals, the proposed method not only resolved the problem of 2-D DOA estimation of wideband sources, but also improved the processing ability to multi-coherent sources when the aperture of the sensors array was fixed. The proposed algorithm had the ability of suppressing additive noise and wideband interference. A new method was given to match the two-dimension parameters in the estimation process. Simulations show the performance of the algorithm.

关 键 词：循环平稳 波达方向 极化 宽带信号 矢量传感器 相干 

分 类 号：TN911[电子电信—通信与信息系统]