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多视角聚束合成孔径雷达成像
Multi-aspect imaging of spotlight synthetic aperture radar
查看参考文献7篇
文摘
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在介绍聚束合成孔径雷达高分辨率成像机理、其获得更高分辨率的难点所在、以及空间分辨率与观测空间频谱关系原理的基础上,提出利用多视角观测增加对目标的观测角,从而增加目标观测的空间频率范围,进而提高空间分辨率的思想.通过对每一视角观测采用波数域成像算法获得每次观测的频谱,利用空间频谱与空间域的对应关系进行频谱融合,对融合后的频谱进行逆傅立叶变换获得方位向分辨率提高的图像.计算机模拟验证了多视角聚束合成孔径雷达成像提高成像分辨率的有效性. |
其他语种文摘
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This paper described firstly the high-resolution imaging mechanism of Spotlight SAR, the difficulties for it to obtain much higher resolution further, and also the relation between spatial resolution and observed spatial spectrum, and then proposed an idea of synthesizing multi-aspect observations to increase total observation angle, i.e. to increase the observation spectrum to achieve much higher resolution in spatial domain. Each observation's spectrum was obtained with wavenumber domain imaging algorithm, and spectrums of all observations were fused in terms of the relationship between space spectrum domain and space domain, finally target area image with improved resolution was achieved through inverse Fourier transform. Computer simulations showed the validity and effectiveness of the algorithm. |
来源
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电波科学学报
,2007,22(4):577-582 【核心库】
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关键词
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聚束合成孔径雷达
;
多视角观测
;
空间虚拟探测技术
;
波数域成像算法
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地址
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中国科学院空间科学与应用研究中心, 北京, 100080
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1005-0388 |
学科
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电子技术、通信技术 |
文献收藏号
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CSCD:2922592
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参考文献 共
7
共1页
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被引
2
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被引
1
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6.
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Spotlight-mode Synthetic Aperture Radar:A Signal Processing Approach (KLUWER ACADEMIC PUBLISHERS.1996),1996
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被引
27
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7.
Zhang Xiangkun. High-resolution SAR imaging by general synthetic aperture processing of two observations.
Proceedings of the Second IASTED international conference,2005:150-154
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被引
1
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