基于DDS技术的L波段收发系统设计

Design of L Band Transceiver System Based on DDS Technology

提出了以直接多通道数字频率合成(DDS)技术为基础设计的收发系统,应用到连续波体制穿墙动目标探测雷达的设计方案。讨论了DDS技术和连续波体制雷达原理和特点。在该系统中,采用了多通道同时输出、切换速率快和低相位噪声的DDS频率合成源,为工程实现雷达发射输出复杂调制波形,以及多通道信号的相位一致性提供了很好的解决途径。

In this paper, the author put forward a design program for the transceiver system used in the dynamic target detection radar based on the multi-channel direct digital frequency synthesis（DDS） technology. It also discussed the principle and characteristics of DDS technology and the continuous wave radar system. The multi-channel, fast switching and low phase noise DDS frequency sources were adopted to provide complex modulation waveform output and multichannel signal phase consistency for radar wave launch.