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三.采样理论1.采样器的数学模型正如上节所述,模一数转换器输出的一系列二进制数据不仅在幅值上是离散的而且在时间上也是离散的。但采样和量化不同,在一定的条件下,采样并不会丢失信息或产生误差。采样信号就是以采样频率fs=1/T 对时间上连续的信号进行周期性(周期=T)采样所得到的信号。为了能够从采样信号恢复成原来的连续信号,采样必须是周期性的,这一点很重
III. SAMPLING THEORY 1. Mathematical Model of Sampler As described in the previous section, a series of binary data output by the ADC is not only discrete in magnitude but also discrete in time. However, the sampling and quantization are different. Under certain conditions, sampling does not lose information or generate errors. The sampled signal is a signal obtained by sampling periodically (period = T) the temporally continuous signal at the sampling frequency fs = 1 / T. In order to be able to recover from the sampled signal into the original continuous signal, the sampling must be periodic, which is very heavy