| 基于连续蚁群优化算法的小快拍加权子空间拟合快速算法 |
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| 引用本文： | 焦亚萌,黄建国,韩晶.基于连续蚁群优化算法的小快拍加权子空间拟合快速算法[J].电子与信息学报,2011,33(4):972-976. |
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| 作者姓名： | 焦亚萌 黄建国 韩晶 |
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| 作者单位： | 西北工业大学航海学院; |
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| 基金项目： | 国家自然科学基金(60972152); 航空科学基金(2009ZC53031); 国家重点实验室基金(9140C2304080607); 西北工业大学基础研究基金(NPU-FFR-W018102)资助课题 |
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| 摘 要： | 该文针对加权子空间拟合(WSF)算法多维非线性优化计算量大，难以工程应用的问题，将连续空间蚁群算法与加权子空间拟合算法相结合，提出了基于蚁群算法的加权子空间拟合(Ant Colony Optimization based Weighted Subspace Fitting，ACO-WSF) 方位估计新方法。该方法利用连续蚁群算法中的信息量高斯核概率分布函数，经过有限次迭代得到加权子空间拟合算法的非线性全局最优解。仿真结果表明，低信噪比、小快拍条件下该方法估计性能与WSF方法基本相同，优于MUSIC方法，而且显著减少了计算量。
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| 关 键 词： | 信号处理 方位估计 加权子空间拟合 蚁群优化算法 计算复杂度 |
| 收稿时间： | 2010-07-28 |
| 修稿时间： | 2010-10-26 |
Continuous Ant Colony Optimization Based Weighted Subspace Fitting Fast Algorithm for DOA Estimation with Few Snapshots |
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| Jiao Ya-meng,Huang Jian-guo,Han Jing.Continuous Ant Colony Optimization Based Weighted Subspace Fitting Fast Algorithm for DOA Estimation with Few Snapshots[J].Journal of Electronics & Information Technology,2011,33(4):972-976. |
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| Authors: | Jiao Ya-meng Huang Jian-guo Han Jing |
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| Institution: | Jiao Ya-meng Huang Jian-guo Han Jing(College of Marine,Northwestern Polytechnical University,Xi'an 710072,China) |
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| Abstract: | Weighted Subspace Fitting(WSF) algorithm is a well-known excellent algorithm for DOA estimation with low SNR and few snapshots.However,this algorithm is totally impractical for its prohibitive computational burden incurred by multi-dimensional nonlinear search.In order to solve this problem,Ant Colony Optimization(ACO) is introduced to combine with the WSF algorithm and a new algorithm with lower computational burden called ACO-WSF is proposed.The proposed algorithm exploits Gaussian kernel probability dens... |
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| Keywords: | Signal processing DOA estimation Weighted subspace fitting Ant colony optimization Computational complexity |
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