拖曳双线阵声纳左右舷分辨宽容性算法研究

项目名称： 拖曳双线阵声纳左右舷分辨宽容性算法研究

项目编号： No.60802041

项目类型： 青年科学基金项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 张宾

作者单位： 青岛科技大学

项目金额： 22万元

中文摘要： 拖曳双线阵声纳是目前极具潜力的探潜声纳，快速有效地实现左右舷分辨是衡量声纳探测性能的一个重要指标。在实际环境中，由于拖曳平台近场干扰以及阵形畸变的影响，拖曳双线阵声纳对于弱目标的左右舷分辨性能较差。为了更有效地实现拖曳双线阵声纳左右舷分辨，本课题拟建立一种宽容的左右舷分辨信号处理方法，增强声纳在恶劣环境下的适应性，提高声纳的探测性能，主要研究内容包括：1）采用统计模型描述拖曳平台近场干扰，实现基于模型的干扰抑制处理；2）对拖曳双线阵左右舷分辨的内在规律进行分析，得出实现最优分辨的条件；3）分析阵形畸变的影响并进行畸变补偿。宽容性左右舷分辨方法的研究，可为拖曳双线阵声纳的进一步发展提供有价值的参考和借鉴，具有重要的军事意义和学术研究价值。

中文关键词： 拖曳双线阵声纳；左右舷分辨；宽容性；干扰抑制；阵形畸变

英文摘要： Towed twin-line array sonar is powerful for submarine detection, while quick and efficient left/right discrimination is an important specification for sonar detection performance. In actual environment, because of the interference of the tow ship noise and the shape distortion of the towed array, the array sonar often can't discriminate the left or right of a weak target well. This proposal will build a robust signal processing method for left/right discrimination. This method can improve the adaptability and the detection performance of sonar under harsh environment. The main research contents include, 1) Using a statistical model to describe the tow ship noise, and realizing the interference suppression. 2) Analyzing the inherent laws of towed array sonar in left/right discrimination, obtaining the conditions for optimal discrimination. 3) Analyzing the effects of array shape distortion, and proposing compensation method. The research of robust left/right discrimination would provide valuable reference for the development of towed twin-line array sonar, and has important military significance and academic value.

英文关键词： towed twin-line array; left/right discrimination; robustness; interference suppression; shape distortion