失真信号采样技术研究

Study of the Technique for Acquiring the Distorted Signal

测量信号失真必须全面获取信号中包含的失真信息。本论文分析了正弦信号采样的特殊性,并与等相位密度采样技术相结合,确定了失真信号的采样原则并给出了实施方法,使获取的数字序列为最大熵序列,从而保证了数据采集的精度。

It＇s necessary to acquire the distorting information of the tested signal completely when the signal distortion is tested. In this paper, the particularity to acquire sine wave is analysed. Furthermore, by adopting the technique of data acquiring with uniform Phase Density, the principle for acquiring distorted signal is ascertained, and how to put the principle in practice is also made out. As a result, the digital data being acquired are the sequence which entropy is maximum, and the precision of data acquiring is ensured.