| 稳定的变步长自适应IIR陷波器及其在动目标检测中的应用 |
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| 引用本文： | 梁红,侯颜平,李志舜.稳定的变步长自适应IIR陷波器及其在动目标检测中的应用[J].声学技术,2005,24(4):197-201,214. |
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| 作者姓名： | 梁红 侯颜平 李志舜 |
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| 作者单位： | 西北工业大学航海学院 西安710072 |
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| 基金项目： | 本文获得船舶工业国防科技应用、基础研究基金(04J5.5.7)的资助 |
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| 摘 要： | 提出了一种变步长的自适应格型IIR陷波器算法,该算法在低信噪比条件下的收敛速度、跟踪速度与收敛精度方面比原变步长算法好,数值稳定性强。首次用两个级联的IIR陷波器实现了混响背景下的动目标检测,效果良好。
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| 关 键 词： | 变步长 自适应IIR格型陷波器 混响抵消 频率估计 动目标检测 |
| 文章编号： | 1000-3630（2005）-04-0197-05 |
| 收稿时间： | 2004-08-01 |
| 修稿时间： | 2004-08-012004-12-10 |
Adaptive IIR notch filter with steady variable step-size and its application to moving target detection |
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| LIANG Hong, HOU Yan-ping, LI Zhi-shun.Adaptive IIR notch filter with steady variable step-size and its application to moving target detection[J].Technical Acoustics,2005,24(4):197-201,214. |
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| Authors: | LIANG Hong HOU Yan-ping LI Zhi-shun |
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| Abstract: | A steady variable stepsize algorithm for adaptive IIR notch filter at low SNR is presented.Compared to the previous algorithm,the improved technique is better in convergence speed,tracking speed and steadystate mean square error.Two cascaded IIR notch filters using the improved algorithm for detecting moving targets in a reverberation environment and estimating center frequencies are also proposed.Simulation results confirm that the proposed algorithm performance is satisfactory. |
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| Keywords: | steady variable stepsize algorithm adaptive IIR notch filter reverberation canceling frequency estimation moving target detection |
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