| 跳频信号SPWVD参数估计方法研究 |
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| 引用本文： | 刘放,叶菲.跳频信号SPWVD参数估计方法研究[J].电脑与信息技术,2007,15(6):28-30,46. |
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| 作者姓名： | 刘放 叶菲 |
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| 作者单位： | 1. 合肥工业大学管理学院,安徽,合肥,230037
2. 电子工程学院信息系,安徽,合肥,230037 |
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| 摘 要： | 跳频信号是典型的非平稳信号,必须采用非平稳信号处理方法.WVD是时频分布中最常用的一种手段,可用来进行跳频信号分析,但存在严重的干扰项.SPWVD是WVD的改进,可以减少WVD交叉干扰项的影响.文章介绍了跳频信号的模型以及SPWVD的离散化实现过程,对SPWVD进行了计算机仿真.结果表明WVD和SPWVD均可时跳频信号进行分析,而SPWVD可以抑制交叉项的影响,并且这种分析方法更加有效、合理.
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| 关 键 词： | 跳频信号 非平稳信号 WVD SPWVD |
| 文章编号： | 1005-1228（2007）06-0028-03 |
| 收稿时间： | 2007-09-07 |
| 修稿时间： | 2007-09-30 |
Research on Estimation SPWVD Parameter of Frequency-Hopping Signal |
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| LIU Fang,YE Fei.Research on Estimation SPWVD Parameter of Frequency-Hopping Signal[J].Computer and Information Technology,2007,15(6):28-30,46. |
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| Authors: | LIU Fang YE Fei |
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| Abstract: | Frequency-Hopping signal is a typical nonstafionary signal and must adopt nonstationary signal processing methods.WVD is a common time-fiequency distribution and be often used to analyze Frequency-Hopping signal,but it has serious cross-term problem.SPWVD is the improvement of WVD,and it can reduce the influence of WVD cross- terms and estimate the parameter of Frequency-Hopping signal.The FH signal model is introduced,and the discrete processing is recited,and the WVD and SPWVD analysis process of FH signals are simulated in computer,all which show that WVD and SPWVD both can analysis Frequency-Hopping signal,but SPWVD reduces the influence of WVD cross- terms,so this method is more effective and feasible. |
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| Keywords: | frequency-hopping signal nonstationary signal WVD SPWVD |
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