哈尔滨工程大学学报2015，Vol.36Issue(9)：1188-1193,6.DOI:10.11990/jheu.201406046
复倒谱域水声信道多途抑制技术
Anti-multipath technique of underwater acoustic channel in complex cepstrum domain
摘要
Abstract
Because of boundary reflections and the non-homogeneity of water in the sea, an underwater acoustic channel is regarded as a multipath channel. Therefore managing multipath interference effectively has always been a difficult and hot issue in underwater acoustics. Based on the fundamental theory of homomorphic filters, the charac-teristics of an underwater multipath acoustic channel in a complex cepstrum domain were analyzed. Then a new kind of feature filter, pinnacle search method, which is suitable for separation of the signal and the channel in a complex cepstrum domain, was put forward. The features of this method were analyzed and compared with the low-pass fea-ture filter and the comb feature filter. The results show that the proposed method can manage the multipath effects effectively. Compared with the other two feature filters, the pinnacle search feature filter can easily be established with smaller error in reconstructing signals, and so is valuable in engineering application.关键词
多途信道/复倒谱/特征滤波器/尖峰搜索法/重构信号Key words
multipath channel/complex cepstrum/feature filter/pinnacle search method/reconstructed signal分类
通用工业技术引用本文复制引用
付进,许婉琰,王燕,梁国龙..复倒谱域水声信道多途抑制技术[J].哈尔滨工程大学学报,2015,36(9):1188-1193,6.基金项目
国家自然科学基金资助项目（51279043，61201411，51209059）；国家863计划资助项目（2013AA09A503）；水声技术国家重点实验室基金资助项目（9140C200203110C2003）；黑龙江省普通高等学校青年学术骨干支持计划（1253G019）． （）
