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.
出处
《现代雷达》
CSCD
北大核心
2005年第12期84-86,90,共4页
Modern Radar
关键词
雷达回波信号
中频
采样频率
噪声
PCI_9820采集卡
radar echo signal
intermediate frequency
sampling frequency
noise
PCI_9820 acquisition card
