哈尔滨工程大学学报2011，Vol.32Issue(5)：632-636,5.DOI:10.3969/j.issn.1006-7043.2011.05.016
一种噪声环境中的多波束相位差估计新方法
A new approach to multibeam phase difference estimation in noise circumstances
摘要
Abstract
In considering the problem of the precision of phase difference estimation and the quality of the bathymetrie data being seriously influenced by noise interference, theoretic analysis and computer simulation were used to study the impact of the noise on phase difference estimation, and useful signal processing methods were proposed to decrease measurement bias and increase the reliability of sonar systems. The results indicate that noise influence on phase difference is not the same in different parts of one bathymetric swath. Using wide subarray spacing, the information of signal amplitude and variable bandwidth filtering can decrease the noise and improve the phase difference estimation precision. The signal processing methods are illustrated by data from a 300 kHz multibeam echo sounder.关键词
相位差/噪声干扰/测量误差/多波束测深声呐Key words
phase difference/ noise interference/ measurement error/ multibeam bathymetric sonar分类
海洋科学引用本文复制引用
李海森,陈宝伟,周天,魏玉阔..一种噪声环境中的多波束相位差估计新方法[J].哈尔滨工程大学学报,2011,32(5):632-636,5.基金项目
国家863海洋技术领域目标引导类项目(2007AAA09Z124) （2007AAA09Z124）
国家自然科学基金资助项目(41006057、41076056、60872107) （41006057、41076056、60872107）
国家科技部国际合作项H(2008DFR70320) （2008DFR70320）
中国高等学校博士点基金项目(20092304110010) （20092304110010）
水声技术国防重点实验室基金项目(91407200302100C2005,9140C200403110C20). （91407200302100C2005,9140C200403110C20）
