声矢量传感器中匹配滤波输出的频域后置处理  

Post-processing on the frequency domain for the matched filter output using an acoustic vector sensor

作　　者：马林 毕雪洁 赵安邦[2] 王彪[1] 李晓曼 MA Lin;BI Xuejie;ZHAO Anbang;WANG Biao;LI Xiaoman(School of Electronics and Information, Jiangsu University of Science and Technology, Zhenjiang 212003, China;College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China)

机构地区：[1]江苏科技大学电子信息学院,江苏镇江212003 [2]哈尔滨工程大学水声工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2022年第1期130-138,共9页Journal of Harbin Engineering University

基　　金：国防重点实验室稳定支持专题(JCKYS2020604SSJS008);江苏科技大学科研启动基金项目(1032932007).

摘　　要：为了提高低信噪比条件下声呐系统的探测性能,本文提出了基于声矢量传感器的匹配滤波频域输出后置处理方法,对声矢量传感器中匹配滤波频域输出后的不同通道间的信号做卷积联合处理和自适应线谱增强,改善时域输出脉冲强度。通过计算机仿真试验验证了所提方法的理论基础,同时进行了性能对比与分析,验证了其可行性;通过湖上试验数据处理验证了所提方法在实际应用中的有效性。本文方法能够有效地提高低信噪比环境中匹配滤波对声信号的检测能力,与常规匹配滤波处理相比检测概率更高,检测效果更好。To improve the detection performance of sonar systems under the condition of low signal-to-noise ratio(SNR),a matched filter frequency domain output post-processing method based on an acoustic vector sensor is proposed in this paper.The signal between different channels after the matched filter frequency domain output in the acoustic vector sensor is processed using convolution joint processing and adaptive line spectrum enhancement.The output pulse intensity in the time domain is enhanced.The theoretical basis of the proposed method is verified through a computer simulation,and a comparative analysis of its performance is conducted to verify the method′s feasibility.Moreover,the effectiveness of the proposed method in practical applications is verified through a lake experiment data processing.The proposed method can effectively improve the detection ability of matched filtering for acoustic signals in a low-SNR environment.Compared with conventional matched filtering,the detection probability and detection effect are enhanced after adopting the proposed method.

关 键 词：声矢量传感器 宽带信号 水下目标 匹配滤波 频域输出 线谱 卷积联合处理 自适应增强 

分 类 号：TN911.7[电子电信—通信与信息系统]