摘要
研究了噪声调频信号中调制噪声方差及带宽的选择对宽带线性调频匹配滤波器的影响。通过观察噪声调频信号通过线性调频匹配滤波器之后的时域输出包络,分析了其起伏特性,推导出了在最大包络起伏指标下的调制噪声最优带宽应该为发射线性调频信号的时宽的倒数量级。同时,通过误差分析表明:要在实际中达到此干扰最优带宽,对侦察接收机的指标要求无需过高。
In this paper,for the first time,the impact of the noise frequency-modulated signal to a wide band linear fre- quency modulation matched filter is studied for different modulation noise variance and bandwidth.Through observation and analy- sis in time-domain of the output envelope fluctuation characteristic of the matched filter,the optimal bandwidth for the modulation noise under the maximum enveloping fluctuation target is derived.Meanwhile,error analysis showed that:in practice,the recon- naissance recei...
出处
《现代雷达》
CSCD
北大核心
2008年第10期52-56,共5页
Modern Radar
关键词
脉冲压缩
干扰
噪声调频
宽带线性调频
pulse compress
jamming
noise frequency-modulated signal
wide band linear frequency modulation
