| 一种高效的ISAR距离对齐算法 |
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| 引用本文： | 刘明敬,刘刚. 一种高效的ISAR距离对齐算法[J]. 电光与控制, 2009, 16(12): 9-11 |
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| 作者姓名： | 刘明敬 刘刚 |
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| 作者单位： | 南京电子技术研究所,南京,210013;南京电子技术研究所,南京,210013 |
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| 摘 要： | 距离对齐是ISAR成像的关键技术之一.传统的距离对齐算法无法同时保证较高的对齐精度和运算效率.为了提高距离对齐的运算效率,在深入研究累积互相关算法原理与实现的基础上,分析了其效率不高的原因.基于累积互相关原理,利用两信号在时域的圆周相关等价于其频谱在频域的共轭相乘这一理论,提出了一种高效的ISAR距离对齐算法.新算法直接在频域计算两信号实包络的累积互相关,相比传统的累积互相关法,对齐精度相当,显著提高了运算效率.理论分析与实测数据处理结果表明,该算法可同时保证良好的对齐精度和较高的运算效率,而且具有很好的鲁棒性,适合于ISAR实时成像.
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| 关 键 词： | 逆合成孔径雷达 距离对齐 实时成像 运动补偿 |
| 收稿时间： | 2008-12-22 |
An Efficient Range Alignment Algorithm for ISAR Imaging |
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| LIU Mingjing,LIU Gang. An Efficient Range Alignment Algorithm for ISAR Imaging[J]. Electronics Optics & Control, 2009, 16(12): 9-11 |
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| Authors: | LIU Mingjing LIU Gang |
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| Affiliation: | LIU Mingjing,LIU Gang(Nanjing Research Institute of Electronics Technology,Nanjing 210013,China) |
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| Abstract: | Range alignment is one of the key technologies of ISAR imaging.Conventional range alignment algorithms cannot guarantee high accuracy and efficiency at the same time.An efficient range alignment algorithm is presented based on the principles of accumulated correlation method.By utilizing the theory that two signals'circular correlation is equivalent to their spectra's conjugate multiplication,the algorithm calculates the correlation function in frequency domain to significantly reduce the computation cost.T... |
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| Keywords: | ISAR range alignment real time imaging motion compensation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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