【摘要】 高速宽带数字化示波器在高扫速工作时 ,仅能采集信号的的少数样点 .为了看清信号的全貌和精确测量其参数 ,必须在每两个样点之间进行插值 (波形重构 ) .本文从数字信号处理角度 ,研究了高速采样信号数字内插理论、插值滤波器结构、正弦内插算法 .最后给出了计算机仿真的实例及其误差 .更多还原

【Abstract】 In high speed wide band digitizer at high sweep speeds,only a few samples of the signals can be on screen.To give the user a reasonable view of the signals and measure their parameters accurately,interpolation is necessary.In this paper,the digital interpolation theory and the structure of interpolation multiphase filter are studied based on digital signal processing,and the algorithm of sinc interpolation is derived.At last,the computer simulation examples and RMS errors are given.更多还原