| 摘 要: 针对TOFS算法需要信源先验数目的问题，提出了一种改进方法。该方法只利用最小特征值对应的向量矩 阵作为估计的噪声子空间，克服了传统的需要全部噪声特征向量作为估计的噪声子空间，无需信源数目就可实现宽带信 号的DOA估计。新算法同时也克服了TOPS算法容易出现伪峰的缺点，算法稳健性高，通用性好，仿真结果验证了算法 的有效性。 |
| 关键词: 宽带信号；DOA估计；TOPS算法；改进TOFS算法 |
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中图分类号: TP802.7
文献标识码: A
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| 基金项目: 陕西省教育厅专项基金项目（17JK0693）. |
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| The Improved TOFS Algorithm for Wideband DOA Estimation |
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ZENG Yaoping
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( School of Communication and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China)
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| Abstract: For the problem of needing prediction for the TOFS (Test of Orthogonality of Frequency Subspaces) algorithm,this paper proposes an improved approach.The new approach utilizes the minimum vector according to the minimum eigenvalue to estimate the noise subspace,and overcomes the traditional noise subspace needing all noise eigenvectors as estimated noise subspace,and finally realizes the wideband signals DOA (Direction Of Arrival) estimation with unknown number of signals.The new approach also overcomes the shortcoming of TOPS algorithm and has high robustness and good generality.The computer simulation confirms the effectiveness of this method. |
| Keywords: wideband signals;DOA estimation;TOPS;Improved TOFS algorithm |
