针对软件无线电(SDR)技术中的多频段信号带通均匀采样技术，提出了一种能够高效、准确地求解最小采样频率的方法。
An efficient method is presented to find the minimum valid sampling frequency for bandpass sampling of multiband signals in software defined radio (SDR) technology.
该方法从理论上可能的最小采样频率出发，根据采样后频谱不发生混叠的3种约束条件来确定可变的频率步长，搜索可用的最小频率。
The method starts with the theoretically minimum frequency and searches for the minimum valid sampling frequency using variable step sizes subject to three non-aliasing constraints.
实验应用了基于最小二乘法的数字滤波技术、多通道采样技术、变频率采样技术。
Digital filtering technique based on least square method multichannel sampling technique and frequency variation sampling technique were used experimentally.
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