合成孔径声纳成像压缩中的旁瓣抑制及主瓣分辨率改进研究  

Synthetic Aperture Sonar Imaging Compression Sidelobe Suppression and Main Lobe of Resolution Improvement Research

作　　者：王江涛[1] 熊仕勇[1] 刘玲慧[1] 

机构地区：[1]重庆邮电大学软件工程学院,重庆400065

出　　处：《激光杂志》2016年第6期53-56,共4页Laser Journal

基　　金：国家自然科学基金(90922007);重庆市教委项目(KJ120528)

摘　　要：研究发现合成孔径声纳(SAS)成像压缩中的旁瓣干扰成为了当前声纳技术的瓶颈,文中通过空间变迹法(SVA)实现了旁瓣抑制和主瓣分辨率优化改进,在一维距离测试中验证了算法优化能够较好的实现旁瓣抑制,在SVA二维成像验证优化得到:和原始成像经过对比二维图像抑制低于-30d;三维视图SVA图像表明整体成像有着不错的分辨率,包络也相对平滑;采用多次迭代的方法能得到更加精确的SAS方位向分辨率,攻克了受限的物理分辨率问题。上述研究成果对于声纳系统分辨率的改进具有明显的理论和实际意义。Study found that synthetic aperture sonar（ SAS） imaging compression the sidelobe interference becomes the bottleneck of the current sonar technology. In this paper,through the space variable method（ SVA） implements the side lobe suppression and main lobe optimization,the resolution get improred. And through a one-dimensional distance tests,it verifies the algorithm can achieve better sidelobe suppression,2 d imaging in SVA validation is optimized,and compared with the original image,two-dimensional image rejection below- 30 d; 3 d view SVA has good integral imaging resolution envelope is also relatively smooth; Adopt the method of multiple iterations can get more accurate SAS azimuth resolution to overcome the limited physical resolution of the problem. The above research results for sonar system resolution improvement has significant theoretical and practical significance.

关 键 词：空间变迹法 二维成像 声纳系统 

分 类 号：TN011[电子电信—物理电子学]