摘要
利用周期模糊函数分析了线性调频连续波信号的匹配滤波输出.用频域加权匹配处理可有效抑制距离旁瓣,提高多目标的分辨能力,但无法避免主瓣变宽,并使线性调频连续波信号的匹配滤波输出有信噪比损失.若采用汉宁加权,信噪比损失为3. 52dB.
The output of matched filters for linear frequency modulation continuous wave （LFMCW） signals was analyzed with period ambiguity function. Frequency weighting is effective to depress range side lobes and improve multi-target resolution, but it widens main range lobes in the same time and leads to loss in signal to noise ratio （SNR） of the output of matched filters for LFMCW signals. The loss of SNR is 3.52 dB, by taking Hanning weight as an example.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2005年第3期426-429,共4页
Journal of Southwest Jiaotong University
基金
电子科技大学青年科技基金项目(JX04023)的资助
关键词
线性调频雷达
距离分辨率
周期模糊函数
匹配滤波
linear FM radar
range resolution
periodic ambiguity function
matched filtering
