线性组合恒定束宽波束形成原理及仿真研究
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- 英文论文题名：Research on theory and simulation of linear combination broadband constant beamwidth beamforming
- 论文作者：杜鹏 ; 李玲
- 英文论文作者：DU Peng ; LI Ling ; Science and technology on underwater test and control laboratory
- 年：2016
- 作者机构：水下测控技术重点实验室;
- 论文关键词：恒定束宽 ; 波束形成 ; 线性组合 ; 失真
- 英文论文关键词：constant beamwidth ; beamforming ; linear combination ; distortion
- 会议召开时间：2016-10-25
- 会议录名称：2016年中国造船工程学会水中目标特性学组学术交流会论文集
- 语种：中文
- 分类号：TN911.7
- 学会代码：SXJS
- 会议名称：2016年中国造船工程学会水中目标特性学组学术交流会
- 会议地点：中国辽宁大连
- 主办单位：中国船舶重工集团公司第七六0研究所水中测控技术重点实验室
- 学会名称：《声学技术》编辑部
- 页数：6
- 文件大小：591k
- 原文格式：D
- 会议级别：全国
摘要
采用直线阵进行水下目标辐射噪声测试,通过阵处理得到空间增益,有利于获取目标远程辐射噪声特性。针对导向角度偏离目标真实方向常规波束形成输出信号失真问题,开展恒定束宽波束形成方法研究。以水下嵌套直线阵为测试湿端,给出了线性组合宽带恒定束宽波束形成基本原理和相应的算法流程;仿真对比了导向角度偏离目标真实方向时,恒定束宽波束形成和常规波束形成的输出信号,结果表明线性组合恒定束宽波束形成方法在保持信号频谱上更优:导向角度偏离目标真实方向时,较常规波束形成方法,恒定束宽波束形成输出信号和原始信号吻合得更好。
It is an advantage for acquiring remote radiated noise characteristics of the target by using a line array in noise testing experiment. The output signal of a conventional beamformer(CBF) will be distorted, while the guide angle is different from the true one. The problem is solved by broadband constant beamwidth beamforming method. Based on a horizonal nesting line array, linear combination broadband constant beamwidth beamforming method was studied in this article. Theory and algorithm flow was given, and then some simulations were done to indicate how the angle error affected the output signal. Simulation results indicated that the output power spectrum calculated by constant beamwidth beamforming is better than conventional beamforming.
It is an advantage for acquiring remote radiated noise characteristics of the target by using a line array in noise testing experiment. The output signal of a conventional beamformer(CBF) will be distorted, while the guide angle is different from the true one. The problem is solved by broadband constant beamwidth beamforming method. Based on a horizonal nesting line array, linear combination broadband constant beamwidth beamforming method was studied in this article. Theory and algorithm flow was given, and then some simulations were done to indicate how the angle error affected the output signal. Simulation results indicated that the output power spectrum calculated by constant beamwidth beamforming is better than conventional beamforming.
引文
[1]孙超.水下多传感器阵列信号处理[M].西安:西北工业大学出版社,2007.
[2]SUN Chao.Underwater Multi-sensors Array Signal Processing[M].Xi’an:Northwestern Polytechnical University Press,2007.
[3]Harry L.Van Trees.Optimum Array Processing,Part IV of Detection,Estimation,and Modulation Theory[M].A John Wiley&Sons,INC.,Publication.2002.
[4]王之程,陈宗岐,于沨,刘文帅.舰船噪声测量与分析[M].北京:国防工业出版,2004.WANG Zhicheng,CHEN Zongqi,YU Feng,LIU Wenshuai.Warship Noise Measuring and Analyzing[M].Beijing:National Defense industry Press,2004.
[5]李贵斌.声纳基阵设计原理[M].北京:海洋出版社,1993.LI Guibin.Design Principle of Sonar Array[M].Beijing:China Ocean Press,1993.
[6]方华,吴国清,马力.线列阵甚宽频带的恒定束宽的数字实现方法[J].应用声学,2006;25(4):222-228.FANG Hua,Wu Guo-Qing,MA Li.Digital implementation of constant beamwidth for line array over a very wide frequency range[J].Applied Acoustics,2006;25(4):222-228.
[2]SUN Chao.Underwater Multi-sensors Array Signal Processing[M].Xi’an:Northwestern Polytechnical University Press,2007.
[3]Harry L.Van Trees.Optimum Array Processing,Part IV of Detection,Estimation,and Modulation Theory[M].A John Wiley&Sons,INC.,Publication.2002.
[4]王之程,陈宗岐,于沨,刘文帅.舰船噪声测量与分析[M].北京:国防工业出版,2004.WANG Zhicheng,CHEN Zongqi,YU Feng,LIU Wenshuai.Warship Noise Measuring and Analyzing[M].Beijing:National Defense industry Press,2004.
[5]李贵斌.声纳基阵设计原理[M].北京:海洋出版社,1993.LI Guibin.Design Principle of Sonar Array[M].Beijing:China Ocean Press,1993.
[6]方华,吴国清,马力.线列阵甚宽频带的恒定束宽的数字实现方法[J].应用声学,2006;25(4):222-228.FANG Hua,Wu Guo-Qing,MA Li.Digital implementation of constant beamwidth for line array over a very wide frequency range[J].Applied Acoustics,2006;25(4):222-228.