多种雷达接收机的特点分析  

Analysis of Different Radar Receivers

作　　者：朱祖德[1] 

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《现代雷达》2010年第10期84-86,共3页Modern Radar

摘　　要：根据雷达接收机的主要任务,提出了接收机实现的多种途径,通过对模拟接收系统的研究,及超外差式接收机、直接下变频接收机、镜频抑制接收机、数字零中频接收机等雷达接收机技术的分析对比,给出了多种雷达接收机的特点和使用前景。其中由于超外差接收机采用了两次变频的技术措施和本身独具的优点,是当前雷达接收机的主流模式,但是随着模数变换电路(ADC)的性能进一步提高,直接数字接收机技术的发展将会成为未来雷达接收机的一大趋势。According to the main task of the receiver in radar system,several ways are introduced to design the receiver.Through researching of analog receiver system and comparing of technology used in main kinds of receivers,such as super heterodyne receiver,direct down-converting receiver,image rejecting receiver,digital zero-intermediate frequency receiver.The character and application of those receivers are given.Although the super heterodyne receiver is used most popularly in radar system at present,because of its advantage in image rejection and well to process the intermediate frequency,the direct digital receiver will become to be more popular than other receivers in the future with the development of analog to digital converter＇s performance.

关 键 词：雷达接收机 超外差接收机 数字接收机 模数变换电路 

分 类 号：TN957.5[电子电信—信号与信息处理]