文献类型：会议论文

英文题名：A fast sea interface reverberation suppression method based on unitary transformation

作者：Li, Yue-Qin[1]; Li, Jin-Ping[1]; Han, Lei[2]

第一作者：李月琴

通讯作者：Li, Y.-Q.

机构：[1] Information College, Beijing Union University, Beijing 100101, China; [2] State Key Laboratory Explosion Science and Technology, Beijing Institute of Technology, Beijing, China

第一机构：北京联合大学智慧城市学院

会议论文集：Proceedings - 2010 International Conference on Digital Manufacturing and Automation, ICDMA 2010

会议日期：18 December 2010 through 20 December 2010

会议地点：Changsha

语种：英文

外文关键词：Data handling - Eigenvalues and eigenfunctions - Mathematical transformations - Metadata - Reverberation - Singular value decomposition

摘要：The low-rank structure reverberation suppression algorithm is a better method to restrain the sea interface reverberation. But the data processing speed of the method is very slowly due to the complexity of singular value decomposition. It can not meet the real-time requirement in actual application. This article present a signal subspace fast approximation method based on unitary transformation which can estimate the reverberation subspace rapidly. This method transform array data matrix to real matrix using the center symmetry of uniform linear array and unitary transformation at first. Then it calculates singular value and eigenvalue decomposition of the real matrix . Signal subspace can be estimated using the method of rational approximation finally. The method's computation is little comparatively and can improved the operation speed greatly. The conclusions of the experiments show that the algorithm has a higher operation speed meanwhile suppress the reverberation effectively. ? 2010 IEEE.