| 基于频域采样的大动态混合信号采集方法 |
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| 引用本文： | 田鹏武,康荣宗,于宏毅,吴瑛.基于频域采样的大动态混合信号采集方法[J].信息工程大学学报,2012,13(4):454-459. |
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| 作者姓名： | 田鹏武 康荣宗 于宏毅 吴瑛 |
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| 作者单位： | 信息工程大学 信息工程学院,河南郑州,450001 |
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| 基金项目： | 国家科技重大专项课题，国家973计划资助项目 |
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| 摘 要： | 针对电磁频谱监测应用下大动态混合信号中,一些在频谱中位置不确知小信号由于ADC采样器件精度有限而无法获得较高量化信噪比采样的问题,提出了两种基于频域采样的信号采集方法,分别为选通型和动态增益控制型,这两种采集方法能够以较高的量化信噪比完成大动态混合信号中小信号的采样,仿真进一步验证了两种方法的有效性.
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| 关 键 词： | 频域采样 大动态 选通 动态增益控制 |
Frequency Domain Approach for Large Dynamic Range Blended Signals Sampling |
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| TIAN Peng-wu,KANG Rong-zong,YU Hong-yi,WU Ying.Frequency Domain Approach for Large Dynamic Range Blended Signals Sampling[J].Journal of Information Engineering University,2012,13(4):454-459. |
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| Authors: | TIAN Peng-wu KANG Rong-zong YU Hong-yi WU Ying |
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| Affiliation: | (Institute of Information Engineering,Information Engineering University,Zhengzhou 450002,China) |
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| Abstract: | In applications of electromagnetic spectrum monitoring,the signals being monitored features large quantity and large dynamic.The weak signals blended with strong signals can not be sampled with proper precision because of the limitation of actual ADC devices.In order to solve the problem,two kinds of frequency domain sampling strategies which are based on gated method and dynamic gain control method are proposed in the paper.Simulation results show that both methods can acquire the weak signals in large dynamic range blended signals with high precision under current level of ADC devices. |
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| Keywords: | frequency domain sampling large dynamic range gated method dynamic gain control |
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