首页 | 本学科首页   官方微博 | 高级检索  
     


Waveform diversity based sonar system for target localization
Authors:Lijie Zhang  Jianguo Huang  Yong Jin  Yunshan Hou  Min Jiang  Qunfei Zhang
Affiliation:1. College of Marine,Northwestern Polytechnical University,Xi'an 710072,P.R.China;Yichang Testing Technique Research Institute,Yichang 443003,P.R.China
2. College of Marine,Northwestern Polytechnical University,Xi'an 710072,P.R.China
Abstract:A new monostatic army system taking advantage of diverse waveforms to improve the performance of underwater target localization is proposed.Unlike the coherent signals between different elements in common active array,the transmitted signals from different elements here are spatially orthogonal waveforms which allow for array processing in the transit mode and result in an extension of array aperture.The mathematical derivation of Capon estimator for this sonar system is described in detail.And the performance of this orthogonal-waveform based sonar is analyzed and compared with that of its phased-array counterpart by water tank experiments.Experimental results show that this sonar system could achieve 12 dB-15 dB additional array gain over its phased-array counterpart,which means a doubling of maximum detection range.Moreover,the angular resolution is significantly improved at lower SNR.
Keywords:sonar  orthogonal signal transmission  Capon  target localization
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《系统工程与电子技术(英文版)》浏览原始摘要信息
点击此处可从《系统工程与电子技术(英文版)》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号