| 抑制维格纳分布交叉干扰项的联合算法 |
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| 引用本文： | 高宪军,陈超,张杰,张卓. 抑制维格纳分布交叉干扰项的联合算法[J]. 吉林大学学报(信息科学版), 2009, 27(2): 127 |
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| 作者姓名： | 高宪军 陈超 张杰 张卓 |
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| 作者单位： | 空军航空大学,航空电子工程系,长春,130022;空军航空大学,航空电子工程系,长春,130022;空军航空大学,航空电子工程系,长春,130022;空军航空大学,航空电子工程系,长春,130022 |
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| 摘 要： | 维格纳分布(WVD:Wigner-Ville Distribution)交叉干扰项的存在,严重地影响了其处理效果。为此，笔者结合交叉干扰项的性质,提出改进算法--基于STFT(Short-Time Fpiroer Tramsfpr)与WVD的联合算法(STFT-WVD)。该联合算法将信号的谱图与维格纳分布作互相关处理,以期达到抑制交叉干扰项的效果。通过理论分析与仿真实验证明，STFT-WVD算法在有效抑制WVD交叉干扰项带来不良影响的同时,保持了WVD较高的时频分辨率,是一种行之有效的WVD改进算法。
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| 关 键 词： | 维格纳分布 交叉干扰项 谱图 联合算法 |
Amelioration Algorithm to Suppress the Cross-Term Interference of WVD |
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| GAO Xian-jun,CHEN Chao,ZHANG Jie,ZHANG Zhuo. Amelioration Algorithm to Suppress the Cross-Term Interference of WVD[J]. Journal of Jilin University:Information Sci Ed, 2009, 27(2): 127 |
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| Authors: | GAO Xian-jun CHEN Chao ZHANG Jie ZHANG Zhuo |
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| Affiliation: | Department of Aviation Electronical Engineering, Aviation University of Air Force, Changchun 130022,China |
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| Abstract: | The WVD(Wigner-Ville Distribution) is an important method of time-frequency analysis, but the cross-term interference in WVD has a bad influence.Aiming at the characters of cross-term interference.An amelioration algorithm-united algorithm basted on STFT(Short-Time Fpiroer Tramsfpr) and WVD (STFT-WVD) was proposed to solving the problem. Between the Spectrogram and WVD of signals, united algorithm makes a cross correlation to achieve an ideal effect. By analyzing and simulating, it is proved that STFT-WVD suppresses the cross-term interference in WVD effectively, and keeps the excellent time-frequency resolution as WVD. So STFT-WVD is an effective amelioration algorithm of WVD. |
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| Keywords: | wigner-ville distribution (WVD) cross-term interference spectrogram united algorithm |
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