叠加型低频干扰下奇异目标信号的检测  

Detection of the singularity target signal under the overlapped low-frequency interruption

作　　者：翟葵[1] 明军[1] 许先凡[1] 

机构地区：[1]安徽大学电子工程与信息科学系,安徽合肥230039

出　　处：《合肥工业大学学报（自然科学版）》2006年第3期322-325,共4页Journal of Hefei University of Technology：Natural Science

基　　金：安徽省自然科学基金资助项目(01042105)

摘　　要：奇异性目标信号检测中往往存在叠加型低频干扰及随机噪声的污染。文章依据奇异目标信号与加叠型低频干扰在频域上的不同特性,以及信号与噪声的小波变换模极大值随尺度所具有的不同传播特性,提出了在复杂环境中奇异目标信号的检测定位算法;实验表明,此算法具有较好的目标识别能力。Overlapped low-frequency interruption and random noise usually exist in singularity target signal recognition. Based on different frequency-domain properties between the singularity target signal and overlapped low-frequency interruption and different spreading properties of signal and noise＇s wavelet transform modulus maxima, the algorithm for detection and orientation of the singularity target signal in the complex circumstance is presented in this paper. Theoretical analysis and experimental results show that this algorithm has great capacity of target recognition.

关 键 词：小波变换 奇异性 目标检测 模极大值 

分 类 号：TN911.23[电子电信—通信与信息系统]