宽带LFM信号瞬时频率和二维到达角联合估计  

Joint Instantaneous Frequency and 2-D AOA Estimation of Wideband LFM Signals

作　　者：黄克骥[1] 田达[1] 陈天麒[1] 

机构地区：[1]电子科技大学电子工程系,四川成都610054

出　　处：《电子学报》2004年第6期990-993,共4页Acta Electronica Sinica

摘　　要：针对非平稳的宽带线性调频信号 (LFM) ,本文利用了对称阵元分布 (WVD)将原始数据投影到时频波束空间建立了一种新颖的具有分维结构的空间时频分布数据模型 ,然后采用Beamspace ESPRIT算法、子空间投影法获得了信号瞬时频率和二维到达角的联合估计 .仿真实验证明算法精度较好 ,计算量小 。The Wigner-Ville distributions of symmetrical sensors are used to project the data from element space to time-frequency beamspace, then a novel spatial time-frequency data model with a separable structure is achieved. Based on this model, beamspace-ESPRIT and subspace projection can be used respectively to get the instantaneous frequency and 2-D AOA of impinging signals. Simulation shows the efficacy of the proposed algorithm.

关 键 词：宽带线性调频信号 瞬时频率 时频波束空间 

分 类 号：TN911[电子电信—通信与信息系统]