基于Hilbert谱脊线粗糙度的微弱目标检测算法  

Weak Target Detection Method Based on the Roughness of the Hilbert Spectrum Ridge

作　　者：张建[1] 王连生[1] 于鹏[2] 曾儒伟[1] 

机构地区：[1]海军航空工程学院新装备培训中心,山东烟台264001 [2]海军装备部军械保障部,北京100841

出　　处：《海军航空工程学院学报》2011年第6期677-681,共5页Journal of Naval Aeronautical and Astronautical University

基　　金：教育部新世纪优秀人才支持计划资助项目(NCET-05-0912);国家自然科学基金资助项目(60672140,60802088)

摘　　要：为检测海杂波中的微弱目标，文中采用实测数据分析了海杂波的Hilbert谱脊线及其粗糙度，研究了目标对其Hilbert谱脊线及其粗糙度的影响。研究发现，目标的出现将导致海杂波Hilbert谱脊线起伏趋予平滑，Hilbert谱脊线粗糙度减小，在此基础上，文中提出了采用Hilbert谱脊线粗糙度检测微弱目标的方法。仿真结果表明，与基于海杂波盒维数的方法和多脉冲CA—CFAR（100个脉冲）方法相比，该方法的检测性能较好。To detect the weak target in the sea clutter, the Hilbert spectrum ridge and its roughness of the real sea clutter data was analyzed, and the influence of the target to them was also discussed. It was found that the appearance of the target would smooth the Hilbert spectrum ridge of the sea clutter and decrease its Hilbert spectrum ridge roughness, so the Hilbert spectrum ridge roughness was proposed to detect the weak target. As shown by the simulation result, the performance of the method proposed in this paper was better than the detection method directly using box dimension and the CA-CFAR （100 pulses）.

关 键 词：海杂波 希尔伯特谱脊线 粗糙度 目标检测 

分 类 号：TN958[电子电信—信号与信息处理]