摘要
数字下变频技术是数字化雷达接收机的关键技术之一。本文针对大抽取率情况的数字下变频技术进行研究,提出基于积分梳状(CIC)滤波器和FIR滤波器级联方式的抽取滤波方法并进行了详细的分析。经仿真和硬件实现证明了该方法的有效性和可实现性,具有广阔的工程应用前景。
Digital down-conversion （DDC） is an important technique of digitized radar receiver. This paper discusses the DDC technique at large sampling rate, making a detailed analysis of the sampling method realized through the cascaded CIC and FIR filters. The results of simulation and hardware implementation prove that this method is very capable of realizing DDC and will have a broad application in engineering.
出处
《雷达与对抗》
2007年第2期31-34,共4页
Radar & ECM
