Digital sampling according to Nyquist and Shannon
Digital sampling according to Nyquist and Shannon
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根据奈奎斯特和香农的数字采样
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
T. Lagö
中科院分区：
文献类型：
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作者：
T. Lagö
今天，我们周围的世界的数字表示几乎已经成为强制性的。这使得将模拟信号转换为数字表示成为一种频繁的要求。在进行这种转换时，有必要确保能够从采集的数字数据样本记录中正确地再现模拟信号。许多教科书中都有介绍采样过程，特别是在电气工程和相关的模拟时间数据中。重要的是要记住，必须遵循Nyquist和Shannon在早期论文中描述的严格规则。如果它们被违反，则可能无法在采样数据集中找到真实的世界信号。本文将介绍采样规则，其结果可能会让一些团体感到惊讶，特别是非电气工程师。
Today, a digital representation of the world around us has become almost mandatory. This makes the conversion of an analog signal into a digital representation a frequent requirement. When performing this conversion, it is of interest to be sure that it is possible to correctly reproduce the analog signal from the record of digital data samples collected. The sampling procedure has been covered in many text books, especially in electrical engineering and for associated analog time data. It is important to remember that the strict rules described in early papers by Nyquist and Shannon must be followed. If they are violated, it might not be possible to find the real world signal in the sampled data set. The sampling rules will be covered in this article and the result may surprise some groups, especially nonelectrical engineers.