高速采集卡在雷达信号中频采样中的应用  

Application of High-speed Acquisition Card to Sampling of Radar Signal

作　　者：万红[1] 李申堂[1] 王志刚[1] 

机构地区：[1]解放军信息工程大学

出　　处：《现代雷达》2005年第12期84-86,90,共4页Modern Radar

摘　　要：针对低信噪比的雷达回波信号数据采集,文中给出了中频带通采样方案,并选用PC I_9820高速采集卡实时采集和存储数据。详细分析了采样频率和噪声对系统性能的影响,并结合实际应用中遇到的问题给出了解决的方法。Aiming at data acquisition of radar echo signal with low SNR, IF band-pass sampling concept is proposed. High-speed acquisition card PCI_9820 is used to sample in real-time and store data. In this paper, the effect of sampling frequency and noise on the performance of system is analyzed in detail. Together with problems in actual application, a method of solving the problems is given.

关 键 词：雷达回波信号 中频 采样频率 噪声 PCI_9820采集卡 

分 类 号：TN957.51[电子电信—信号与信息处理]