| 一种基于多循环频率的韧性时延与多普勒频移联合估计算法 |
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| 引用本文： | 刘洋,邱天爽.一种基于多循环频率的韧性时延与多普勒频移联合估计算法[J].电子学报,2011,39(10):2311-2316. |
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| 作者姓名： | 刘洋 邱天爽 |
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| 作者单位： | 1. 大连理工大学电子信息与电气工程学部,辽宁大连116024;内蒙古大学电子信息工程学院,内蒙古呼和浩特010021
2. 大连理工大学电子信息与电气工程学部,辽宁大连,116024 |
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| 基金项目： | 国家自然科学基金(No.60872122) |
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| 摘 要： | 本文提出了一种基于分数低阶循环模糊函数的多循环频率时延与多普勒频移联合估计算法.该方法将分数低阶矩与循环平稳特性相结合,能够在SαS(Symmetric α Stable)脉冲噪声条件下检测信号的循环平稳特性.算法充分利用了信号的循环频率信息,具备较强的抑制干扰能力.仿真结果表明,在脉冲噪声和干扰环境中本文提出的算法均...
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| 关 键 词： | 循环平稳特性 对称α稳定分布噪声 模糊函数 时间延迟 多普勒频移 |
| 收稿时间： | 2010-12-23 |
A Robust Method for Joint Time Delay and Doppler Estimation Based on Multi-Cycle Frequencies |
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| LIU Yang,QIU Tian-shuang.A Robust Method for Joint Time Delay and Doppler Estimation Based on Multi-Cycle Frequencies[J].Acta Electronica Sinica,2011,39(10):2311-2316. |
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| Authors: | LIU Yang QIU Tian-shuang |
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| Affiliation: | LIU Yang1,2,QIU Tian-shuang1(1.Faculty of Electronic Information and Electrical Engineering,Dalian University of Technology,Dalian,Liaoning 116024,China,2.College of Electronic Information Engineering,Inner Mongolia University,Huhhot,Inner Mongolia 010021,China) |
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| Abstract: | A new method for joint time delay and Doppler shift estimation based on the fractional lower-order cyclic cross ambiguity function(FCCA) and multi-cycle frequencies is proposed.The relationship among fractional lower-order cyclic correlation,second-order cyclic correlation and pth-order cyclic correlation is analyzed.By using fractional lower-order cyclic statistics and exploiting cyclostationarity property of more than one cycle frequency,the new algorithm share the signal selectivity and is highly toleran... |
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| Keywords: | cyclostationarity symmetric α stable distribution (SαS) ambiguity function time delay Doppler shift |
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