在基于中频采样技术的数字中频接收机中，怎样在AD变换器位数受限的情况下实现较大的系统瞬时动态范围是系统设计中的一个重要问题。
In digital IF receiver based on IF sampling technology, one important issue of system design is how to realize wide instantaneous dynamic range, when the available digits of AD converter is limited.
图3示意性地示出了隔行到逐行扫描变换器，其接收基于场的输入信号并且生成基于逐行扫描帧的输出信号。
FIG. 3 schematically illustrates an interlaced to progressive scan converter which receives a field-based input signal and generates a progressive scan frame-based output signal.
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