| 基于非均匀FFT的距离徙动算法 |
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| 引用本文： | 张志禹,荣 柱.基于非均匀FFT的距离徙动算法[J].计算机工程与应用,2007,43(17):32-33. |
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| 作者姓名： | 张志禹 荣 柱 |
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| 作者单位： | 西安理工大学自动化与信息工程学院,西安710048 |
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| 摘 要： | 距离徙动算法(RMA)由于需要进行精确的插值,限制了它在SAR成像中的应用。将非均匀快速傅立叶变换(NUFFT)应用到RMA成像算法中,将Stolt插值和距离向的IFFT用NUFFT来替换,在保证成像质量的情况下,提高了成像的效率,仿真结果证明了该算法的有效性。
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| 关 键 词： | 合成孔径雷达 距离徙动算法 非均匀快速傅立叶变换 成像 |
| 文章编号： | 1002-8331（2007）17-0032-02 |
| 修稿时间： | 2006-11 |
RMA imaging algorithm based on NUFFT's |
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| ZHANG Zhi-yu,RONG Zhu.RMA imaging algorithm based on NUFFT''''s[J].Computer Engineering and Applications,2007,43(17):32-33. |
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| Authors: | ZHANG Zhi-yu RONG Zhu |
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| Affiliation: | Institute of Automation &; Information Engineering，Xi’an University of Technology，Xi’an 710048，China |
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| Abstract: | Range Migration Algorithm(RMA) must include the so-called Stolt interpolation,which will cause the huge amount of calculation,restrict it applied foreground in SAR imaging.In this work,NUFFT will be applied in RMA,our approach consists in substituting both the Stolt interpolation and the final range inverse FFT by a single NUFFT,wipe off vast calculation arise from Stolt interpolation.Numerical simulations illustrate the performance of the new method. |
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| Keywords: | Synthetic Aperture Radar(SAR) Range migration Algorithm(RMA) NUFFT imaging |
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