基于PeCAN序列编码的连续主动声呐信号分析
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- 英文论文题名：Continuous active sonar signal analyze based on PeCAN sequence
- 论文作者：吴迪 ; 周泽民 ; 曾新吾
- 英文论文作者：WU Di ; ZHOU Ze-min ; ZENG Xin-wu ; Academy of Ocean Science and Engineering ; National University of Defense Technology
- 年：2016
- 作者机构：国防科学技术大学海洋科学与工程研究院;
- 论文关键词：PeCAN序列 ; 相位编码信号 ; 连续主动声呐
- 英文论文关键词：PeCAN sequence ; phase coded signal ; continuous active sonar
- 会议召开时间：2016-10-28
- 会议录名称：2016年全国声学学术会议论文集
- 语种：中文
- 分类号：TN911.6
- 学会代码：OGSM
- 会议名称：2016年全国声学学术会议
- 会议地点：中国湖北武汉
- 主办单位：中国声学学会
- 学会名称：中国声学学会
- 页数：4
- 文件大小：724k
- 原文格式：D
- 会议级别：全国
摘要
本文利用匹配滤波的信号处理方法,分析得到了PeCAN相位编码连续主动声呐信号的探测性能随信号基本参数的变化规律。仿真结果表明:PeCAN相位编码信号的距离分辨力只与Pe CAN序列的编码宽度有关,编码宽度越小距离分辨力越高;其速度分辨力和抗噪性与信号长度有关,信号长度一致速度分辨力相同,而信号长度越长抗噪性越好。与相同时宽的LFMCW、LFM-COSTAS及M序列相位编码信号的对比,PeCAN序列编码信号在测距时可实现最低的旁瓣。
By detecting target with continuous transmitting signals, continuous active sonar possess the advantages of tracing target continuously, more gain of SNR and less request of transmitting power for transducer as comparison to pulsed active sonar. Matched filtering is used in this article to approach the rule of detecting performance with the changing of the basic parameters of PeCAN phase coded signal. According to the simulation, the range resolution of PeCAN sequence phase coded signal is only related to the coding width of Pe CAN sequence, the shorter the better; the velocity resolution is related to the signal length, the same signal length, the same velocity resolution; the longer signal length, the better noise immunity. As compare to LFMCW, LFM-COSTAS and M sequence phase coded signal with the same time width, Pe CAN sequence phase coded signal can achieve the lowest sidelobe in ranging.
By detecting target with continuous transmitting signals, continuous active sonar possess the advantages of tracing target continuously, more gain of SNR and less request of transmitting power for transducer as comparison to pulsed active sonar. Matched filtering is used in this article to approach the rule of detecting performance with the changing of the basic parameters of PeCAN phase coded signal. According to the simulation, the range resolution of PeCAN sequence phase coded signal is only related to the coding width of Pe CAN sequence, the shorter the better; the velocity resolution is related to the signal length, the same signal length, the same velocity resolution; the longer signal length, the better noise immunity. As compare to LFMCW, LFM-COSTAS and M sequence phase coded signal with the same time width, Pe CAN sequence phase coded signal can achieve the lowest sidelobe in ranging.
引文
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[2]Liang J,Li J.On designing the transmission and reception of multistatic continuous active sonar systems[J].IEEE Trans.Aero.Electr.Systems.2014,50(1):285-297.
[3]Stoica P,He H and Li J.New algorithms for designing unimodular sequences with good correlation properties[J].IEEE Trans.Aero.Electr.Systems.2009,57(4):1415-1425.
[4]Hickman G,Krolik J L.Non-recurrent wideband continuous active sonar[C]//Proceeding of OCEANS’12 MTS/IEEE,2012:1-6.
[5]De Ferrari H,Wylie J.Ideal signals and processing for continuous active sonar[C]//Proceedings of Meetings on Acoustics.Acoustical Society of America,2013,19(1):055058.
[6]Nadav L,Eli M.Radar Signals[M].Hoboken:John Wiley&Sons,Inc,2004.