%0 Journal Article
%T Sidelobe suppression design method of radar waveform based on continuous chaotic system<br>基于连续混沌系统的低旁瓣雷达波形设计*
%A LEI Chao
%A HU Jin-feng
%A LIU Li-dong
%A HE Zi-shu
%A <br>雷超
%A 胡进峰
%A 刘立东
%A 何子述
%J 计算机应用研究
%D 2011
%I 
%X Linear frequency-modulated(LFM) signals utilize window function in order to gain a relatively low sidelobe level, however, it leads to the loss of signal-noise-ratio(SNR); discrete chaotic frequency-modulated(FM) signals which belong to nonlinear frequency-modulated(NLFM) signals have unsatisfying autocorrelation property as well. To resolve this problem, this paper proposed a new chaotic FM signal which was modulated by the variable of continuous chaotic system after optimizing initial condition value. This method could remarkably reduce the sidelobe level of Lorenz FM signal to -39.53 dB. Simulation results demonstrate that comparing with LFM signal, discrete chaotic frequency-modulated signal and discrete chaotic phase-modulated signal, the signal studied in this paper has better sidelobe suppression performance while maintaining its inherent high ECCM capability .
%K sidelobe suppression
%K chaotic frequency-modulated
%K continuous chaotic system
%K ECCM<br>旁瓣抑制
%K 混沌调频
%K 连续混沌系统
%K 电子抗干扰
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=684FD61068E3A397FF26B8D52897CD0E&yid=9377ED8094509821&vid=D3E34374A0D77D7F&iid=0B39A22176CE99FB&sid=CF0706A3E35031F6&eid=C7A2B92569DF5458&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=0&reference_num=9