火力与指挥控制2016，Vol.41Issue(12)：41-43,49,4.
基于FRFT窄带滤波的LFM信号研究
Study of LFM Signal Based on FRFT Domain Narrowband Filter
摘要
Abstract
With the application and development of FRFT domain narrowband filter technology,so the study of FRFT domain narrowband filter bandwidth will become particularly important. In this paper the relationship between the FRFT domain narrowband filter bandwidth and the signal after filtering are studied and the fractional domain narrowband filter bandwidth threshold with the signal distortion as a criterion is analyzed. The theoretical analysis and simulation results show:By the FRFT domain narrowband filtering the phase of linear frequency modulation signal has no changing and the amplitude of linear frequency modulation signal is the form of the integration of Sinc function. And In order to ensure the LFM signal frequency information integrity the bandwidth of the fractional domain narrowband filter must be no less than the main lobe width of LFM signal amplitude spectrum in fractional domain and provides a reference standard for the fractional domain filtering bandwidth selection.关键词
分数阶域窄带滤波/线性调频信号Key words
FRFT domain narrowband filter/linear frequency modulation signal分类
信息技术与安全科学引用本文复制引用
王瑜,李小波,周青松,黄中瑞..基于FRFT窄带滤波的LFM信号研究[J].火力与指挥控制,2016,41(12):41-43,49,4.基金项目
国家自然科学基金(61171170) （61171170）
安徽省自然科学基金资助项目(1408085QF115) （1408085QF115）
