以DDS为核心的数字模块在相控阵雷达中的应用

DDS at the Core of the Digital Modules for Phased Array Radar

介绍数字收 /发模块在相控阵雷达中的应用。首先分析了数字收 /发模块的核心部分 :直接数字式频率合成器和数字接收机的基本工作原理。由于直接数字式频率合成 (DDS)具有分辨力高、转换速度快等优点 ,使系统的整体性能得到了显著提高 ;该数字模块的控制部分、数据输入、数据输出均是数字序列。

This paper introduces a digital transmit/receive module for phased array radars.At first,the core of the digital module is analyzed:such as the theory of the direct digital synthesis (DDS) and digital receiver.Because DDS has the advantages of fine frequency resolution and fast switching speed which can improve the ability of the whole system.And the modile is true digital compnent:control and data inputs and outputs are all sequences.