| 宽带直接处理方法的性能分析 |
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| 引用本文： | 李鑫,赵建军,金勇,周宁.宽带直接处理方法的性能分析[J].河南大学学报(自然科学版),2010,40(1). |
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| 作者姓名： | 李鑫 赵建军 金勇 周宁 |
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| 作者单位： | 河南大学,先进控制与智能信息处理研究所,河南,开封,475001 |
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| 摘 要： | 首先建立了宽带阵列信号处理的模型,在此基础上,主要分析了CSM,BASS-ALE,以及FDM宽带高分辨方位估计算法.进行了计算机仿真试验,在理论上分析和比较了三种方法的性能,验证了宽带波达方向(DOA)估计算法的有效性.仿真结果表明,与CSM相比较,宽带直接处理方法BASS-ALE和FDM具有更好的性能,其原因是宽带直接处理方法不需要构造聚焦矩阵,也不需要方位预估,避免了这些因素对子空间谱及方位估计的影响.
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| 关 键 词： | 宽带信号 子空间谱估计 波达方向 频域模型 |
Performance Analysis of Broad-band Direct Processing Methods |
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| LI Xin,ZHAO Jian-jun,JIN Yong,ZHOU Ning.Performance Analysis of Broad-band Direct Processing Methods[J].Journal of Henan University(Natural Science),2010,40(1). |
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| Authors: | LI Xin ZHAO Jian-jun JIN Yong ZHOU Ning |
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| Abstract: | The model of broadband array signal was established firstly. Then, coherent signal-subspace method(CSM), broad-band signal-subspace spatial-spectrum(BASS-ALE) and frequency-dependent modeling(FDM) are discussed. In theory, it analyzes and compares the performance of the three methods by computer simulations. The simulation results show that BASS-ALE and FDM has a better performance of resolution than CSM. Because broad-band direct processing method does not need to structure focusing matrixes and DOA pre-estimation,these factors' influence with the spatial spectrum and DOA estimation is avoided. |
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| Keywords: | wideband signal signal-subspace spatial estamation direction of arrival frequency domain modeling |
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