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.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2006年第6期844-847,共4页
Systems Engineering and Electronics
关键词
参数估计
阵列信号处理
时频分析
相位编码
parameter estimate
array processing
time frequency analysis
phase-coded signal
