| 周期信号的孔径抖动及其去除 |
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| 引用本文： | 郑济均,周智敏,宋千.周期信号的孔径抖动及其去除[J].系统工程与电子技术,2003,25(7):886-888. |
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| 作者姓名： | 郑济均 周智敏 宋千 |
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| 作者单位： | 国防科技大学综合电子信息系统研究所,湖南,长沙,410073 |
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| 摘 要： | 孔径抖动是指模数转换器采样周期之间出现的相位抖动 ,是由各时钟周期边沿出现时刻的不确定性导致的。当输入信号频率较高时孔径抖动是模数转换器信噪比下降的一个重要原因。对数据采集系统中的孔径抖动进行了仿真实验 ,介绍了反卷积算法 ,并利用反卷积算法对周期信号的孔径抖动进行了去除。仿真结果表明该方法是有效可行的
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| 关 键 词： | 孔径抖动 反卷积算法 仿真 |
| 文章编号： | 1001-506X(2003)07-0886-03 |
| 修稿时间： | 2002年4月11日 |
Time Jitter in a Periodic Signal and Its Elimination |
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| ZHENG Ji jun,ZHOU Zhi min,SONG Qian.Time Jitter in a Periodic Signal and Its Elimination[J].System Engineering and Electronics,2003,25(7):886-888. |
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| Authors: | ZHENG Ji jun ZHOU Zhi min SONG Qian |
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| Abstract: | Time jitter is a phase jitter between sampling periods of an ADC, which is caused by the uncertainty of clock edges. It may result in a decrease of signal to noise ratio (SNR) when the input signal has a high frequency. In this paper the time jitter in the data acquisition system is simulated. The deconvolution algorithm is introduced to eliminate the time jitter in the periodic signal. Simulation results are presented to demonstrate the effectiveness of this method. |
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| Keywords: | Time jitter Deconvolution algorithm Simulation |
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