非线性调频脉冲信号的时域处理  

Time Domain Processing of Non-linear Frequency-modulation Pulse Signal

作　　者：徐益初[1] 郝晓勤[1] 

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《现代雷达》2014年第7期30-33,共4页Modern Radar

摘　　要：非线性调频脉冲信号,在时间轴上均匀等分,对应的频率轴上则是非均匀分布。用频率表示信号的时域值,并用海明函数作为幅度加权函数。经过如上所述的处理之后,调频信号允许的多普勒频移范围为±2%带宽,相对于以往常用的线性调频信号和未经加权的非线性调频信号均具备一定的优势,具有一定的实用价值。The signals discussed in this paper, had uniform distribution in time domain, and non-uniform distribution in corresponding frequency domain. The value in time domain was expressed by frequency, and the Hamming function was taken as a weighting function. Based on this method, the values in time domain of non-linear FM signal was calculated. The result showed that the Doppler frequency shift range had good performance. The method could be used to deal with signals which distribute ±2 % on bandwidth, so it was useful in real applications relative to un-weighting non-linear frequency-modulation pulse signal and weighting linear-modulation frequency-modulation pulse signal.

关 键 词：非线性调频信号 加权函数 多普勒频率 

分 类 号：TN957.51[电子电信—信号与信息处理]