| 基于数据阵共扼重构的宽带相干源DOA估计算法 |
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| 引用本文： | 刘云,李志舜,王新晓.基于数据阵共扼重构的宽带相干源DOA估计算法[J].电声技术,2003(10):57-59,63. |
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| 作者姓名： | 刘云 李志舜 王新晓 |
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| 作者单位： | 西北工业大学,航海工程学院,陕西,西安,710072 |
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| 摘 要： | 提出了一种基于阵列接收数据阵共扼重构的宽带源DOA估计方法。该算法在保持原ISM算法无需构造复杂聚焦阵的基础上，取前后向平滑的特例——子阵长度与阵元数相等，在每一子带对接收数据阵进行共扼重构，在不损失阵列孔径的前提下实现了相干源的DOA估计，并可提高对非相干源的估计性能。仿真结果验证了新方法的有效性。
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| 关 键 词： | 宽带 重构 相干源 波达方向 DOA估计 仿真 相干信号子空间处理方法 |
An algorithm for estimating the DOA of wide-band coherent sources based on conjugate reconstruction of data matrix |
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| LIU Yun,LI Zhi-shun,et al..An algorithm for estimating the DOA of wide-band coherent sources based on conjugate reconstruction of data matrix[J].Audio Engineering,2003(10):57-59,63. |
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| Authors: | LIU Yun LI Zhi-shun |
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| Affiliation: | LIU Yun,LI Zhi-shun,et al. |
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| Abstract: | Based on the data matrix reconstruction with conjugate data in every sub-band,a new al-gorithm is presented to estimate the DOA of wideband coherent sources.The essential of the data ma-trix re-construction is forward-backward spatial smoothing,and it is a special case where the length of sub-array is equal to that of the array.Therefore,the coherent sources are resolved without losing any array aperture size.For incoherent sources,the estimation performance is improved by reconstructing the received data matrix.The simulation results verified the efficiency of the new method. |
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| Keywords: | wideband reconstruction coherent sources DOA estimation |
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