摘要
文中研究了利用循环平稳方法估计多个具有零均值随机乘性噪声的复谐波信号参数的方法,并分析了其渐近统计性能,结果表明循环统计量可用来恢复多个具有任意分布的零均值随机有色乘性噪声的复谐波信号,且所得的谐波参数估计的均方差与相应的Cramer-Rao界具有相同的数量级。模拟结果验证了所得结果的正确性。
The concern here is retrieval of multiple tone harmonics observed in complex-valued multiplicative noises with zero mean. Cyclic statistics have proved to be useful for harmonic retrieval in the presence of complex-valued multiplicative noises with zero mean of arbitrary colors and distributions . Performance analysis of cyclic estimators is carried through and large sample variance expressions of the cyclic estimators are derived. Simulations validate the large sample performance analysis.
基金
国家自然科学基金
关键词
循环估计量
乘性随机噪声
谐波恢复
信号分析
Cyclic estimator, Performance analysis, Multiplicative random noise, Harmonic retrieval
