| 一种星载合成孔径雷达数字成像算法 |
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| 引用本文： | 申艳,王新民,禹卫东. 一种星载合成孔径雷达数字成像算法[J]. 测试技术学报, 2007, 21(2): 102-106 |
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| 作者姓名： | 申艳 王新民 禹卫东 |
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| 作者单位： | 中国科学院,电子学研究所二室,北京,100080;中国科学院研究生院,北京,100039;中国科学院,电子学研究所二室,北京,100080 |
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| 摘 要： | 提出了一种星载合成孔径雷达数字成像抑制相干斑的算法--OMRD(Overlapped Multilook Range-Doppler)算法,该算法基于星载合成孔径雷达成像基本原理和传统的RD算法,通过距离向脉冲压缩,距离徙动校正,方位向合成孔径处理,去除相干斑噪声处理,实现了星载合成孔径雷达的数字成像,降低了相干斑噪声的影响,提高了图像信噪比.对ERS-1星载原始数据进行实验成像,得到了清晰的意大利罗马地区图像.实验结果表明,OMRD算法是一种有效的星载合成孔径雷达成像抑制相干斑的算法.
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| 关 键 词： | 星载 合成孔径雷达 成像 相干斑 多视 |
| 文章编号： | 1671-7449（2007）02-0102-05 |
| 收稿时间： | 2006-09-10 |
| 修稿时间： | 2006-09-10 |
Study of A Spaceborne SAR Digital Imaging Algorithm |
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| SHEN Yan,WANG Xin-min,YU Wei-dong. Study of A Spaceborne SAR Digital Imaging Algorithm[J]. Journal of Test and Measurement Techol, 2007, 21(2): 102-106 |
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| Authors: | SHEN Yan WANG Xin-min YU Wei-dong |
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| Abstract: | A new spaceborne SAR(Synthetic Aperture Radar) imaging algorithm,named OMRD(Overlapped Multilook Range-Doppler),is presented.Based on the echo model,the principles of SAR and the traditional RD(Range-Doppler) algorithm,OMRD is realized by pulse compression in range,migration correction,synthetic aperture processing in azimuth and overlapped multilook.The processing reduces the effect of speckle and improves the signal to noise ratio.After the raw data of ERS-1(European Remote Sensing-1) was processed by the imaging algorithm,the image of Roma area in Italy was obtained.The results validate the effectiveness of OMRD imaging algorithm in spaceborne SAR. |
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| Keywords: | spaceborne Synthetic Aperture Radar imaging coherent speckle multilook |
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