摘要
超短基线定位系统由于基阵尺寸小、安装方便,在海洋开发中得到了广泛的应用。信号设计是多目标水声定位系统的关键。与常规的跳频序列相比,COSTAS阵列具有良好的相关特性。文中对COSTAS跳频信号进行了分析,仿真结果表明,由它构建的跳频信号有着较好的多目标信号抑制能力,并且可以找到合乎系统要求的多目标信号编码组。试验结果也证明了采用这种基于COSTAS阵列的跳频工作方式较为适合水下多目标声学定位。
Ultra-short baseline system （USBL） is widely used in ocean exploitation because of its small aperture size and easy installation. Signal design is the key in a multi-target underwater acoustic positioning system. COSTAS array has better correlation properties compared with the normal frequency hopping arrays. This paper analyzes the COSTAS frequency hopping signal and the simulation results show that the COSTAS frequency hopping signal waveform can depress multi-target interference well, and thus we can find some practical code groups. The experiment results also show that the frequency hopping mode based on the COSTAS array is suitable for multi-target underwater acoustic positioning.
出处
《海军工程大学学报》
CAS
北大核心
2007年第2期12-16,共5页
Journal of Naval University of Engineering
基金
国家863计划资助项目(2002AA613010)
关键词
多目标水声定位
COSTAS阵列
超短基线
multi-target underwater acoustic positioning
COSTAS array
ultra-short baseline system
