| 用单个矢量水听器基于DEMON线谱的双目标分辨 |
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| 引用本文： | 姚直象,惠俊英,王德俊,蔡平. 用单个矢量水听器基于DEMON线谱的双目标分辨[J]. 应用声学, 2005, 24(3): 171-176 |
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| 作者姓名： | 姚直象 惠俊英 王德俊 蔡平 |
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| 作者单位： | 1. 哈尔滨工程大学水声工程学院,哈尔滨,150001;海军工程大学电子工程学院,武汉,430033
2. 哈尔滨工程大学水声工程学院,哈尔滨,150001 |
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| 摘 要： | 不同目标的解调线谱频率是不同的。本文提出了一种在DEMON谱域内对双目标测向的方法,它具有较好的抗相干及非相干干扰能力,表明单个矢量水听器也能分辨多目标。文中叙述了利用DEMON线谱测向的原理,给出了轴频提取及双目标DEMON线谱分离的方法,对DEMON线谱区分双目标的能力做了仿真分析。
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| 关 键 词： | 声矢量信号处理 目标方位分辨 目标方位估计 噪声解调谱 |
Identifying two targets by a single vector hydrophone based on the DEMON spectrum |
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| YAO Zhi-Xiang,HUI Jun-Ying,WANG De-Jun and CAI Ping. Identifying two targets by a single vector hydrophone based on the DEMON spectrum[J]. Applied Acoustics(China), 2005, 24(3): 171-176 |
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| Authors: | YAO Zhi-Xiang HUI Jun-Ying WANG De-Jun CAI Ping |
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| Affiliation: | College of Underwater Acoustic Eng., Harbin Engineering University, Harbin 150001;College of Electric, Navy Engineering University, Wuhan 430033;College of Electric, Navy Engineering University, Wuhan 430033;College of Electric, Navy Engineering University, Wuhan 430033 |
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| Abstract: | Different target has different DEMON spectrum. Based on this characteristic, a new method to estimate the direction of two different targets is brought forward in this paper, which can efficiently suppress both coherent and un-coherent interferences. The method uses a single vector hydrophone and demonstrates the ability of such single hydrophone to identify multi-targets. The principle of DOA estimation based on the DEMON spectrum is specified; The method to pick-up the axial frequency and to identify the DEMON spectra belonging to two targets is given; The capability of identifying two different targets based on the DEMON spectrum is analyzed. |
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| Keywords: | Vector signal processing Identifying target azimuth DOA estimation DEMON spectrum |
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