| 直达波和杂波干扰下目标阴影逆合成孔径成像 |
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| 引用本文： | 王磊,罗迎,张群.直达波和杂波干扰下目标阴影逆合成孔径成像[J].现代防御技术,2011,39(2):142-147. |
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| 作者姓名： | 王磊 罗迎 张群 |
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| 作者单位： | 1. 空军工程大学电讯工程学院,陕西,西安,710077
2. 空军工程大学电讯工程学院,陕西,西安,710077;复旦大学波散射与遥感信息国家教育部重点实验室,上海,200433 |
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| 摘 要： | 对直达波和杂波条件下的阴影逆合成孔径雷达(SISAR)目标成像问题进行了研究。分析了直达波和杂波对侧影像畸变和运动补偿的影响,提出了一种新的直达波和杂波干扰下目标SI-SAR成像方法,即将回波信号与参考信号进行模拟对消,并利用目标回波的频谱特性剔除残留直达波,再对目标运动参数进行粗估计,采用粗搜索和精搜索2步实施准确的运动补偿,最终获得失真度较小的目标侧影像。仿真实验验证了算法的有效性。
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| 关 键 词： | 阴影逆合成孔径雷达 直达波 杂波抑制 运动补偿 |
Imaging Algorithm for Shadow Inverse Synthetic Aperture Radar with Direct Wave and Clutter Jamming |
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| WANG Lei,LUO Ying,MANG Qun.Imaging Algorithm for Shadow Inverse Synthetic Aperture Radar with Direct Wave and Clutter Jamming[J].Modern Defence Technology,2011,39(2):142-147. |
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| Authors: | WANG Lei LUO Ying MANG Qun |
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| Institution: | WANG Lei1,LUO Ying1,ZHANG Qun1,2(1.AFEU,Telecommunication Engineering Institute,Shaanxi Xi'an 710077,China,2.Fudan University,Key Laboratory of Wave Scattering and Remote Sensing Information (Ministry of Education),Shanghai 200433,China) |
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| Abstract: | The imaging technology of shadow inverse synthetic aperture radar(SISAR) with direct wave and clutter jamming is researched.The adverse effects on shadow image precisions and motion compensation induced by direct wave and clutters are discussed to present a novel algorithm for SISAR.Firstly,target's echoes are cancelled with the analog reference signals.Then,the residual direct waves are eliminated according to the spectrum characteristics of the echoes.After the motion parameters of target are estimated ro... |
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| Keywords: | shadow inverse synthetic aperture radar(SISAR) direct wave clutter suppression motion compensation |
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