欠采样条件下相位编码信号参数估计  

Parameter estimation of the phase-coded radar signal in under sample condition

作　　者：汪玲[1] 殷吉昊[1] 陈天麒[1] 

机构地区：[1]电子科技大学电工学院,四川成都610054

出　　处：《系统工程与电子技术》2006年第6期844-847,共4页Systems Engineering and Electronics

摘　　要：针对宽频段的相位编码脉冲压缩雷达信号,提出了一种在时空欠采样情况下估计相位编码信号子脉冲码率、载频、到达角的时频空三维估计方法。该方法综合时频分析和阵列信号处理方法,利用相位编码信号短时傅里叶变换的幅相特性和非均匀L阵的解角度模糊特性,不需要相位编码信号先验信息,对所采用的时频分析方法具有自适应性,对阵列形式无严格要求,具有更实际的应用价值。仿真实验证明了该方法的有效性。Aiming at the phase-coded radar signals, a new method is proposed to estimate tne sub-pulse rate, carrier frequency and direction-of-arrival （DoA） in time-frequency undersample condition. Synthesiging the time-frequency and array processing method, using the amplitude and phase property of the short-time fou- rier transform （STFT） of the signals and the unambiguous property of no uniform L-array, no requiring the pri- ority information of the phase-coded signals, featuring the auto-adaptive of the method of time-frequency and the less limited of the array manifold,this method finds wide application in practice. Simulation results illustrate the effectiveness of this method.

关 键 词：参数估计 阵列信号处理 时频分析 相位编码 

分 类 号：TN911[电子电信—通信与信息系统]