| 远场大转角时水下典型目标回波建模与成像 |
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| 引用本文： | 程广利,张明敏,徐国军.远场大转角时水下典型目标回波建模与成像[J].武汉理工大学学报(交通科学与工程版),2008,32(6). |
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| 作者姓名： | 程广利 张明敏 徐国军 |
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| 作者单位： | 海军工程大学电子工程系,武汉,430033 |
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| 基金项目： | 国防预研资助项目
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| 摘 要： | 为了解决当水下目标位于声呐远场且转动角度较大时,运用距离-多普勒算法成像存在的图像模糊难题,基于物理声学方法建立了此时水下典型目标的回波信号模型,运用极坐标格式算法对目标进行成像,讨论了不同的插值算法对成像效果的影响,实现了刚性有限长圆柱体和椭球目标成像.仿真结果表明成像效果良好,有效克服了散射点越分辨单元走动的影响.
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| 关 键 词： | 远场大转角 水下典型目标成像 回波建模 物理声学方法 极坐标格式算法 |
Echo Modeling and Imaging for Underwater Typical Targets in Far-field With Large Rotation Angle |
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| Cheng Guangli,Zhang Mingmin,Xu Guojun.Echo Modeling and Imaging for Underwater Typical Targets in Far-field With Large Rotation Angle[J].journal of wuhan university of technology(transportation science&engineering),2008,32(6). |
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| Authors: | Cheng Guangli Zhang Mingmin Xu Guojun |
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| Institution: | Department of Electronic Engineering;Naval University of Engineering;Wuhan 430033 |
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| Abstract: | To resolve the problem of blurring imaging generated by Range-Doppler Algorithm(RDA) for underwater target which relative to the sonar platform is in far-field and rotation angle is large,echo signals of underwater typical targets are modeled based on physical acoustical method,and imaginaries of the targets are achieved using Polar Formation Algorithm(PFA),then effect of different interpolation algorithms on imaging quality is discussed.Rigid cylinder with finite length and prolate spheroid are imaged by t... |
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| Keywords: | far field with large rotation angle imaging of underwater typical targets echo model physical acoustical method PFA |
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