一种多分量chirp信号阵列检测新方法  

Novel Array Detection Method of Multicomponent Chirp Signal

作　　者：刘贤忠[1] 尹德强[1] 邓兵[1] 

机构地区：[1]海军航空工程学院电子信息工程系

出　　处：《海军航空工程学院学报》2010年第4期369-371,380,共4页Journal of Naval Aeronautical and Astronautical University

基　　金：国家自然科学基金资助项目(60902054);中国博士后科学资金资助项目(20090460114);“泰山学者”建设工程专项经费

摘　　要：提出了一种多分量chirp信号检测与参数估计的新方法。该方法利用天线阵列的空间特性,通过阵列平均在分数阶傅里叶域中引入加权函数来降低噪声、抑制不同源信号之间的相互干扰。和单阵元方法相比,文中方法大大提高了多分量chirp信号检测和参数估计的性能,仿真结果证明了方法的有效性。In this paper, a new method was proposed for detection and parameter estimation of multicomponent chirp signal, which utilized the spatial characteristic of the antenna array. By the introduction of weighting in the fractional Fourier domain, this proposed method effectively suppressed the noise and interactions of the source signals, and achieved better performance than the known method for one cell. The simulation results verified the feasibility and efficiency of the proposed method.

关 键 词：天线阵 分数阶傅里叶变换 CHIRP信号 参数估计 

分 类 号：TJ434.1[兵器科学与技术—火炮、自动武器与弹药工程] TN957.5[电子电信—信号与信息处理]