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。通过分析影响中频采样接收机瞬时动态范围的各种因素，文中给出了实现大瞬时动态的中频采样接收机的思路和方法。

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. By analyzing various factors related to the dynamic range, a new method of realizing wide instantaneous dynamic range in radar receiver based on IF sampling technology is proposed in this paper.

TN850 TN957.5