摘要
在模/数转换过程中由于环境等因素会造成信号采样的非均匀性。非均匀采样信号使得数字控制系统数/模转换过程出现误差,提出了将非均匀采样信号通过零阶保持器进行恢复的信号重构算法,分析并证明了重构信号的频谱保持了原连续信号的谱特征。利用PSPICE仿真软件对非均匀采样信号及通过零阶保持器的连续输出信号进行了仿真验证,实验结果验证了本文提出方法的正确性。
In the process of analog-to-digital（A/D） conversion,the sampled data is nonuniform may be caused by the impact of the environment or other factors.Recovering the nonuniformly sampled signal through the zero-order holder,then analyzing its output,the spectrum keeps its original continuous signal characteristics.This paper investigates the simulation about the nonuniformly sampled signal and the continuous signal by the zero-order holder with the simulation software of PSPICE.The validity of this method which this paper proposed has been verified by simulation experiments,which shows the zero-order holder can restore the the nonuniformly sampled signal.
出处
《齐齐哈尔大学学报（自然科学版）》
2010年第5期1-4,共4页
Journal of Qiqihar University(Natural Science Edition)
基金
黑龙江省普通高等学校青年学术骨干支持计划项目(1154G56)
大庆师范学院博士科研启动项目(08ZB01)
关键词
非均匀采样
信号重构
零阶保持器
nonuniformly sampling
signal reconstruction
zero-order holder
