| LFM-Costas编码信号在水下目标识别中的应用 |
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| 引用本文： | 李永胜,吕林夏.LFM-Costas编码信号在水下目标识别中的应用[J].舰船科学技术,2012,34(6):74-78. |
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| 作者姓名： | 李永胜 吕林夏 |
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| 作者单位： | 1. 中国船舶重工集团公司第七○五研究所,陕西西安710075;水下信息与控制重点实验室,陕西西安710075
2. 中国船舶重工集团公司第七○五研究所,陕西西安,710075 |
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| 摘 要： | 在水声对抗中,为了有效对抗假目标和准确判别目标尺度,提出了一种具有较高时-频联合分辨力和抗混响能力的LFM-Costas编码信号形式。并在浅海混响信道模型和目标多亮点模型基础上研究了LFM-Costas编码信号的目标尺度判别性能。通过仿真和海上试验,表明LFM-Costas编码信号在混响背景下能准确判别目标尺度,具有一定的工程应用价值。
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| 关 键 词： | Costas编码 多亮点模型 混响模型 水下目标识别 |
Research on LFM-Costas pulse coding waveform in underwater target recognition |
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| LI Yong-sheng
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LV Lin-xia.Research on LFM-Costas pulse coding waveform in underwater target recognition[J].Ship Science and Technology,2012,34(6):74-78. |
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| Authors: | LI Yong-sheng LV Lin-xia |
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| Institution: | 1(1.The 705 Research Institute of CSIC,Xi’an 710075,China; 2.The Laboratory of Science and Technology on Underwater Information Process and Control,Xi’an 710075,China) |
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| Abstract: | In order to distinguish the false target or acoustic bait and estimate precisely the target scale,a new pulse coding waveform which having nearly ideal range-Doppler ambiguity properties is proposed.Then,the target scale recognition model of the pulse coding waveform is constructed.The ability and the stability of the target scale recognition algorithm are mainly researched,and found to get clearly multi-highlight of the target.The simulation and the sea trial results show the validity of the method. |
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| Keywords: | Costas code muti-highlight model reverberation model underwater target detection |
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