| 基于DBF技术的星载SAR宽测绘带实现方法 |
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| 引用本文： | 齐维孔,禹卫东,黄平平. 基于DBF技术的星载SAR宽测绘带实现方法[J]. 数据采集与处理, 2010, 25(3) |
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| 作者姓名： | 齐维孔 禹卫东 黄平平 |
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| 作者单位： | 1. 中国科学院电子学研究所,北京,100190;中国科学院研究生院,北京,100039
2. 中国科学院电子学研究所,北京,100190 |
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| 摘 要： | 在研究距离向使用数字波束形成(Digital Beanforming,DBF)实现星载SAR宽测绘带原理的基础上,分析了星载DBF-SAR距离模糊与传统星载SAR距离模糊的不同,并利用阵列天线零点指向技术实现宽零陷的原理,展宽模糊点所对应位置零陷宽度,从而在提高星载SAR宽测绘带基础上有效地减小距离模糊,提高成像质量.通过仿真和比较分析,表明使用具有宽零陷指向特性的DBF技术实现星载SAR宽测绘带模式的可行性.
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| 关 键 词： | 星载合成孔径雷达 数字波束形成 零点指向技术 宽测绘带 距离模糊 |
Digital Beamforming(DBF) Technique to Realize Spaceborne Synthetic Aperture Wide Swath |
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| Qi Weikong,Yu Weidong,Huang Pingping. Digital Beamforming(DBF) Technique to Realize Spaceborne Synthetic Aperture Wide Swath[J]. Journal of Data Acquisition & Processing, 2010, 25(3) |
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| Authors: | Qi Weikong Yu Weidong Huang Pingping |
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| Affiliation: | Qi Weikong1,2,Yu Weidong1,Huang Pingping1,2(1.Institute of Electronics,Chinese Academy of Sciences,Beijing,100190,China,2.Graduate University of Chinese Academy of Sciences,100039,China) |
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| Abstract: | The principle of spaceborne syntheetic aperture radar(SAR) wide swath is studied by using digital beamforming in the range.The formula of the digital beamforming is derived and the algorithm by using array antenna adaptive null steer technique is researched to suppress the range ambiguity.Moreover,the digital beamforming with the null steer is used to realize SAR wide swath,thus increasing the spaceborne SAR swath and reducing the range ambiguity.Simulation results and the analysis show that the digital bea... |
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| Keywords: | spaceborne synthetic aperture radar(SAR) digital beamforming(DBF) null steer technique wide swath range ambiguity |
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