| 一种适用于TDOMP算法的测量矩阵优化方法 |
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| 引用本文： | 赵娟,白霞. 一种适用于TDOMP算法的测量矩阵优化方法[J]. 雷达学报, 2016, 5(1): 8-15. DOI: 10.12000/JR15131 |
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| 作者姓名： | 赵娟 白霞 |
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| 作者单位： | (北京理工大学信息与电子学院 北京 100081) |
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| 基金项目： | 国家自然科学基金(61421001, 61331021),北京市高等教育青年英才资助课题(YETP1159) |
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| 摘 要： | 测量矩阵的优化设计有利于提高压缩感知中信号的重构性能。该文研究了适用于TDOMP (TwoDictionaries OMP)重构算法的测量矩阵优化方法。TDOMP算法是一种改进的OMP算法,该算法使用与感知矩阵互相关性低的匹配矩阵来辨识正确的感知矩阵原子。所提方法利用交替投影的思想来优化测量矩阵从而得到相关性低的感知矩阵和匹配矩阵,然后用于TDOMP算法来提高信号的重建性能。仿真实验验证了所提方法的有效性。
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| 关 键 词： | 压缩感知 测量矩阵 Gram矩阵 互相关 |
| 收稿时间： | 2015-12-26 |
Measurement Matrix Optimization Method for TDOMP Algorithm |
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| Zhao Juan,Bai Xia. Measurement Matrix Optimization Method for TDOMP Algorithm[J]. Journal of Radars, 2016, 5(1): 8-15. DOI: 10.12000/JR15131 |
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| Authors: | Zhao Juan Bai Xia |
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| Affiliation: | (School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China) |
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| Abstract: | Optimizing the measurement matrix can improve reconstruction performance in compressed sensing. In this study, we study the measurement matrix optimization method regarding its application to the Two Dictionaries Orthogonal Matching Pursuit (TDOMP) algorithm. The TDOMP is a modified OMP, which uses a matching matrix with low cross-coherence to identify the correct atoms of the sensing matrix. The proposed optimization method is based on alternative projection technique to construct the measurement and matching matrices with low cross-coherence to improve the performance of the TDOMP. Experimental results verify the effectiveness of the proposed method. |
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