舰船电子工程2017，Vol.37Issue(2)：66-70,78,6.DOI:10.3969/j.issn.1672-9730.2017.02.016
双曲线调频信号的主瓣不展宽旁瓣抑制方法
Sidelobe Suppression Method for Hyperbolic Frequency Modulated Signal without Mainlobe Widening
摘要
Abstract
Hyperbolic frequency modulated(HFM) signal is usually adopted in active sonar, while, the matching filter output shows larger sidelobes.The ordinary weighting sidelobe suppression methods cause obviously mainlobe widening, which results in distance resolution worsening.Considering needs of both sidelobe suppression and distance resolution, a sidelobe suppression method without mainlobe widening is proposed in this paper.The theoretical performances of the proposed method are analyzed for HFM.The results show that the proposed method combining with HFM could suppress the sidelobes and the-3dB mainlobe width is not widened, which satisfy both the needs of neighbor highlights discrimination and weak highlight detection.The experiment results of sea trial data demonstrate the validity of theoretical conclusion.The proposed method is valuable in the application of target recognition or key parts location for multi-highlights target.关键词
双曲线调频信号/旁瓣抑制/主瓣展宽/距离分辨力/匹配滤波Key words
hyperbolic frequency modulated signal/sidelobe suppression/mainlobe widening/distance resolution/matched filter引用本文复制引用
陈允锋,王余,王本猛,郭瑞..双曲线调频信号的主瓣不展宽旁瓣抑制方法[J].舰船电子工程,2017,37(2):66-70,78,6.基金项目
国家自然科学基金项目(编号:41506118)资助. （编号:41506118）
