It was suggested that direct intermediate frequency sampling was approached by two branch sampling, otherwise digital product detector was adopted to digital interpolation.
提出用二分项采样法实现直接中频采样，而数字式检波器采用数字内插法。
It was suggested that direct intermediate frequency sampling was approached by two branch sampling, otherwise digital product detector was adopted to digital interpolation.
提出用二分项采样法实现直接中频采样，而数字式检波器采用数字内插法。
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