| 一种新的宽频带信号频率欠采样估计方法 |
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| 引用本文： | 王洪洋,曾操,廖桂生.一种新的宽频带信号频率欠采样估计方法[J].西安电子科技大学学报,2005,32(1):31-35. |
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| 作者姓名： | 王洪洋 曾操 廖桂生 |
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| 作者单位： | 西安电子科技大学雷达信号处理国家重点实验室，西安电子科技大学雷达信号处理国家重点实验室，西安电子科技大学雷达信号处理国家重点实验室 陕西西安 710071，陕西西安 710071，陕西西安 710071 |
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| 基金项目： | 国家自然科学基金资助项目(60172028)，高等学校博士学科点专项基金(20010701008)，国家部委科技重点实验室联合资助 |
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| 摘 要： | 提出了一种新的基于欠采样技术的宽频带信号频率估计方法．利用两个独立欠采样通道得到的有模糊的信号频率信息，结合一定的解模糊和配对方法得到无模糊的信号频率估计．该方法不受两个欠采样通道间不一致性的影响，且两通道的采样数据可并行处理，增强了算法的实用性．
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| 关 键 词： | 宽频带 欠采样 频率模糊 配对方法 |
| 文章编号： | 1001-2400(2005)01-0031-05 |
A new method for frequency estimation from wide-band under-sampled data |
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| WANG Hong-yang,ZENG Cao,LIAO Gui-sheng n,China.A new method for frequency estimation from wide-band under-sampled data[J].Journal of Xidian University,2005,32(1):31-35. |
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| Authors: | WANG Hong-yang ZENG Cao LIAO Gui-sheng n China |
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| Affiliation: | Key Lab. of Radar Signal Processing, Xidian Univ., Xi′an 710071， China |
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| Abstract: | A new method for estimating the frequency from wide-band under-sampled data is proposed. With the aid of aliased frequency information from two independent sampling channels and the proposed pairing method, we can solve the frequency ambiguity. Furthermore, the proposed method is not sensitive to the amplitude and phase errors of both channels and data obtained from two channels can be processed separately, and thus it has a wider applied field than the existing methods. The high estimation accuracy of this proposed algorithm is confirmed by comparing simulation results with CRLB accomplished at the end of this paper. |
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| Keywords: | wide-band under-sampled frequency ambiguity pairing method |
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