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NONPARAMETRIC SPECTRAL ESTIMATORS FORSECOND-ORDER (ALMOST) CYCLOSTATIONARYCOMPLEX PROCESSES
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作者 Mao Yongcai Bao Zheng(Laboratory for Radar Signal Processing, Xidian University, Xi’an, 710071) 《Journal of Electronics(China)》 1997年第1期12-19,共8页
Second-order almost cycloststionary complex processes are complex random signals with almost periodically time-varying statistics. Smoothed periodograms are proposed for related to cyclic spectral estimation and are s... Second-order almost cycloststionary complex processes are complex random signals with almost periodically time-varying statistics. Smoothed periodograms are proposed for related to cyclic spectral estimation and are shown to be consistent. Asymptotic covariance expressions are derived along with their computable forms. 展开更多
关键词 nonstationary spectral analysis Complex CYCLOSTATIONARY sequences Nonpara-metric cyclic-spectrum estimation Consistency Asymptotic COVARIANCE
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复循环平稳的非平稳信号的非参数谱估计 被引量:1
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作者 毛用才 保铮 《电子科学学刊》 CSCD 1996年第6期574-581,共8页
复准循环平稳信号为具有准周期时变统计特性的复随机信号,它对研究信息系统中的一些非高斯过程有重要意义。本文提出了平滑周期图作为离散时间复循环平稳过程的循环谱估计,并从理论上证明了该估计为相容估计,还导出了其渐近协方差表达式。
关键词 非平稳谱分析 复循环平稳序列 非参数谱估计
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