多无人水下航行器协同探测声呐宽带波形设计与性能分析  

Wideband Waveform Design and Performance Analysis for Multiple Unmanned Underwater Vehicle Cooperative Detection Sonar

作　　者：许彦伟[1,2] 薛勐 刘明刚 郝程鹏[1,2] 赵莉 王佳欢[3] 周正春 XU Yanwei;XUE Meng;LIU Minggang;HAO Chengpeng;ZHAO Li;WANG Jiahuan;ZHOU Zhengchun(Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;Southwest Jiaotong University,Chengdu 611756,China)

机构地区：[1]中国科学院声学研究所,北京100190 [2]中国科学院大学,北京100049 [3]西南交通大学,成都611756

出　　处：《电子与信息学报》2023年第10期3796-3804,共9页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61971412,61671443)。

摘　　要：相比于空中的电磁波信号,水下的声波信号传播速度小、频率低,多普勒效应和窄带信号处理方法严重影响多无人水下航行器(multi-UUV)协同探测声呐对运动目标的探测性能。该文基于Costas序列和正交频分线性调频(OFD-LFM)波形,设计了离散频率编码非正交线性调频波形(DFCW-NOFD-LFM),并将该波形与二进制相移键控(BPSK)、离散频率编码波形(DFCW)等传统码分多址(CDMA)波形进行了性能比较。结果表明,所设计波形具有大多普勒容限、良好的自相关与互相关性能和优秀的抗混响能力,有望应用于多UUV协同探测声呐,以提高其运动目标探测性能。The speed and frequency of underwater sound wave are much lower compared with the electromagnetic wave in the air.The moving target detection performance of multiple Unmanned Underwater Vehicle(multi-UUV)cooperative detection sonar is seriously influenced by the Doppler effect and narrowband signal processing.In this paper,the Discrete Frequency Coding Waveform of Non-Orthogonal Frequency Division Linear Frequency Modulation(DFCW-NOFD-LFM)based on Costas sequence and Orthogonal Frequency Division Linear Frequency Modulation(OFD-LFM)waveform is designed for multi-UUV cooperative detection sonar.The performance comparisons between the designed waveform and the traditional Code Division Multiple Access(CDMA)waveforms such as Binary Phase Shift Keying(BPSK),Discrete Frequency Coding Waveform(DFCW)are carried out.The results show that the designed DFCW-NOFD-LFM has large Doppler tolerance,good performance of auto-correlation,cross-correlation and reverberation suppression.It may be applied to the multi-UUV cooperative detection sonar to improve the relative moving target detection performance.

关 键 词：多无人水下航行器 协同探测 波形设计 离散频率编码波形 

分 类 号：TN929.3[电子电信—通信与信息系统] TN911.6[电子电信—信息与通信工程]