摘要
研究了一类非平稳信号具有随机幅度的多项式相位信号的时延估计问题。充分利用信号的高阶循环平稳性,提出了一种基于信号高阶循环矩的时延估计方法。该方法容易实现,估计精度能有效地抑制加性平稳非高斯和任何高斯噪声。试验结果证明了提出方法的正确性。
Time-delay estimation problem for a class of nonstationary signals with random amplitude polynomial phase signals is explored. Imposing higher order cyclostationarity of these signals, a novel approach of time-delay estimation based on higher order cyclic-moment is proposed. The method is easy to implement, and yield precise estimation. The algorithms are theoretically tolerant to a large class of noises including additive stationary non-Gaussian and Gaussian noise. Simulation examples supporting the theory are provided.
出处
《电子信息对抗技术》
2006年第4期26-28,37,共4页
Electronic Information Warfare Technology
关键词
随机幅值
多项式相位信号
时变矩和循环矩
random amplitude
polynomial phase
cyclic moment and time-varying moment
