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基于传统的多通道采样技术,以二通道为例,对二通道采样和信号重构算法进行了分析,对传统理论算法进行了改进和提高,通过信号重构算法,实现了宽带信号的高速高精度采样,计算机仿真结果表明,改进后的二通道采样及重构方法可有效地减小频谱失真,实现信号的高精度采样和实时重构。同时,本文给出了基于美国德州仪器公司(TI公司)最新的高速DSP芯片DM8168的硬件系统,从硬件上实现了本文所提出的二通道重构算法。
Based on the traditional multi-channel sampling technique, taking two channels as an example, the two-channel sampling and signal reconstruction algorithms are analyzed. The traditional theoretical algorithms are improved and improved. The signal reconstruction algorithm achieves high-speed and high-speed broadband signals Accurate sampling, computer simulation results show that the improved two-channel sampling and reconstruction methods can effectively reduce the spectral distortion, high-precision sampling of signals and real-time reconstruction. At the same time, this paper presents a hardware system based on the latest high-speed DSP chip DM8168 from Texas Instruments Incorporated (TI), and realizes the two-channel reconfiguration algorithm proposed in this paper.