摘要
提出了一种简单而实用的基于FPGA方式的阻塞式干扰的产生方案。分析了系统工作机理,给出了系统结构框图。基带噪声是基于FPGA数字方式产生的具有高斯分布的白噪声,阻塞噪声通过基带噪声变换得到。基带噪声加到VCO上,采用噪声调频的方式得到较宽频带的阻塞干扰噪声,噪声频谱的中心位置由加到VCO上的直流偏压大小来控制。经过仿真验证,系统结构符合设计要求。
A simplified and practical method of barrage jamming signal generator based on FPGA is presented. The mechanism of the system is analyzed and the figure of the system structure is given. Baseband noise is Gaussion white noise based on FPGA. Wide band barrage jamming noise is transformed form Baseband noise,which is added to VCO, by the method of noise FM. The center frequency of noise is controlled by the direct current value which is added to VCO. After simulation, system structure accords with the design.
出处
《现代电子技术》
2008年第1期57-58,共2页
Modern Electronics Technique
