| 多个具有非零均值复乘性噪声的复谐波信号循环估计量的性能分析 |
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| 引用本文： | 毛用才,保铮.多个具有非零均值复乘性噪声的复谐波信号循环估计量的性能分析[J].电子与信息学报,1999,21(3):289-295. |
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| 作者姓名： | 毛用才 保铮 |
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| 作者单位： | 西安电子科技大学雷达信号处理重点实验室，西安电子科技大学雷达信号处理重点实验室 西安 710071，西安 710071 |
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| 摘 要： | 从雷达等探测系统需要的频率估计出发,文中研究了利用循环平稳方法估计多个具有非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,结果表明循环均值可用来恢复多个具有任意分布的非零均值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。
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| 关 键 词： | 循环估计量 性能分析 乘性随机噪声 谐波恢复 |
| 收稿时间： | 1997-11-26 |
| 修稿时间： | 1998-10-14 |
PERFORMANCE ANALYSIS OF CYCLIC ESTIMATORS FOR MULTIPLE HARMONICS IN COMPLEX NONZERO MEAN MULTIPLICATIVE NOISES |
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| Mao Yongcai,Bao Zheng.PERFORMANCE ANALYSIS OF CYCLIC ESTIMATORS FOR MULTIPLE HARMONICS IN COMPLEX NONZERO MEAN MULTIPLICATIVE NOISES[J].Journal of Electronics & Information Technology,1999,21(3):289-295. |
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| Authors: | Mao Yongcai Bao Zheng |
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| Affiliation: | Key Lab. for Radar Signal Processing Xidian University Xi'an 710071 |
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| Abstract: | The concern here is retrieval of multiple tone harmonics observed in complex-valued multiplicative noises with nonzero mean. Cyclic mean statistics have proved to be useful for harmonic retrieval in the presence of complex-valued multiplicative noises with nonzero 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. |
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| Keywords: | Cyclic estimator Performance analysis Multiplicative random noise Harmonic retrieval |
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