宽带线调信号脉内参数及二维角联合估计  

Modulation parameters and 2-D AOA estimation of WLFM signals

作　　者：殷吉昊[1] 汪玲[1] 陈天麒[1] 

机构地区：[1]电子科技大学电子工程学院,四川成都610054

出　　处：《电波科学学报》2007年第4期707-711,共5页Chinese Journal of Radio Science

摘　　要：针对具有时变阵列流型的宽带线性调频(WLFM)信号,建立瞬时波束空间阵列模型,实现多个WLFM信号瞬时频率和二维角联合估计;同时利用二维角估计值完成信号间瞬时频率的分离,并最终实现各个WLFM信号脉内参数(初始频率和调频斜率)估计。算法具有相干信号处理能力,且不需空间平滑或聚汇等预处理。仿真实验证明了算法的有效性。For time-varying direction vectors of wideband linear frequency modulated （WLFM）signals, the instantaneous beamspace array model is developed to estimate the instantaneous frequency and 2-dimensional （2-D） angle of arrive （AOA）, and then a set of instantaneous frequencies classified by 2-D AOAs is used to calculate the modulation parameters （initial frequency and chirp rate）of each WLFM signal. Furthermore, the proposed method can process coherent signals well without spatial smoothing or focusing. The efficacy of the proposed method is demonstrated by simulation results.

关 键 词：阵列信号处理 宽带线性调频信号 多维参数估计 

分 类 号：TN911.7[电子电信—通信与信息系统]