| 大抽取率情况下的数字下变频技术研究 |
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| 引用本文： | 韩卫国,宋虎,陈建军.大抽取率情况下的数字下变频技术研究[J].雷达与对抗,2007(2):31-34. |
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| 作者姓名： | 韩卫国 宋虎 陈建军 |
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| 作者单位： | 91404部队 河北秦皇岛066001(韩卫国)，南京船舶雷达研究所 江苏南京210003(宋虎，陈建军) |
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| 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。
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| 关 键 词： | 雷达 信号处理 大抽取率 数字下变频 FPGA |
| 文章编号： | 1009-0401（2007）02-0031-04 |
| 修稿时间： | 2007-04-06 |
Digital down-conversion at large sampling rate |
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| HAN Wei-guo, SONG Hu, CHEN Jian-jun.Digital down-conversion at large sampling rate[J].Radar & Ecm,2007(2):31-34. |
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| Authors: | HAN Wei-guo SONG Hu CHEN Jian-jun |
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| Affiliation: | 1. Unit 91404 of the Chinese PLA, Qinhuangdao 066001, China; 2. Nanfing Marine Radar Institute, Nanfing 210003, China |
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| Abstract: | 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. |
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| Keywords: | radar signal processing large sampling rate DDC FPGA |
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