摘要
设计具有A／D转换的信号采集系统时，设计者着重于考虑采样后是否会产生假频，而对采样后的误差厂般考虑较少。文章讨论了采样定理的缺陷问题，提出了采样效应的概念。并从所采得的信号与原信号的幅度和相位误差两个角度分析了采样定理的工程应用问题，仅供从事信号采集系统硬件设计者参考。
Shi Jincheng and Yu Shuxian.The Analysis of the Error in Sampling. PI,1995, 9 (3): 154~ 159 When designing a signal acquistion system with A/D converter,we usually focus on whether the occuring of alias-frequency in signal or not but pay little attention to the errors in sampling process.In this article the imperfection of sampling theorem is discussed and put forward a new concept of sampling effect in signal acquisition- From the errors of the amplitudes and phases between the initial signal and its sampled signal,lwe analyze the engineering application problem of sampling theorem and provide reference for the designers of the system hard ware.
出处
《石油仪器》
1995年第3期154-159,共6页
Petroleum Instruments
