| 一种基于门限判决的窄带干扰抑制频域自适应算法 |
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| 引用本文： | 张爱民,龚广伟,韩方景.一种基于门限判决的窄带干扰抑制频域自适应算法[J].电子信息对抗技术,2009,24(4):48-53. |
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| 作者姓名： | 张爱民 龚广伟 韩方景 |
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| 作者单位： | 国防科技大学电子科学与工程学院,长沙,410073 |
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| 基金项目： | 航空科学基金项目(20060112005) |
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| 摘 要： | 为了解决直接序列扩频系统中强窄带干扰的抑制问题，提出一种基于门限判决的频域自适应算法。该算法利用干扰门限值估计和优化自适应滤波器参数，不但大大加快了收敛速度还提高了跟踪能力，而且保证了较小的稳态误差。理论分析和仿真结果表明：该算法可以有效抑制直扩系统中时变窄带干扰。
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| 关 键 词： | 门限判决 自适应滤波 窄带干扰抑制 |
The Adaptive Algorithm of Narrowband Interference Suppression Based on Threshold Decision in Frequency-Domain |
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| Authors: | ZHANG Ai-min GONG Guang-wei HAN Fang-jing |
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| Institution: | College of Electronic Science and Engineering of NUDT;Changsha 410073;China |
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| Abstract: | In order to solve the problem of strong narrowband interference suppression in direct sequence spread system,an adaptive algorithm is proposed which is based on threshold decision in frequency-domain.The algorithm can estimate and optimize the parameters of adaptive filter with the interference threshold,not only the convergence speed and track performance is improved dramatically,but also the steady state error is small.Theoretical analysis and simulation show that the algorithm can suppress the time-varia... |
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| Keywords: | threshold decision adaptive filter narrowband interference suppression |
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