| 探地雷达横向等效变波速SAR成像算法研究 |
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| 引用本文： | 李廷军,孔令讲,周正欧. 探地雷达横向等效变波速SAR成像算法研究[J]. 电子科技大学学报(社会科学版), 2010, 0(1) |
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| 作者姓名： | 李廷军 孔令讲 周正欧 |
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| 作者单位： | 电子科技大学电子工程学院; |
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| 基金项目： | 国家自然科学基金(60472014);;国家“十一五”预研项目 |
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| 摘 要： | 探地雷达应用中,由于土壤介质的影响,不同位置目标回波延时常常存在波动,传统的恒定波速成像算法不能修正这种波动,难以使成像性能达到最优。该文提出一种根据目标回波的曲线特征,快速估计横向等效波速,采用变波速F-K偏移进行合成孔径精确成像的新方法。实测数据处理结果显示该方法性能优于恒定波速成像。
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| 关 键 词： | 探地雷达 横向变波速 合成孔径成像 波速估计 |
Lateral Variable Equivalent Velocity SAR Imaging Algorithm for GPR |
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| LI Ting-jun,KONG Ling-jiang,, ZHOU Zheng-ou. Lateral Variable Equivalent Velocity SAR Imaging Algorithm for GPR[J]. Journal of University of Electronic Science and Technology of China(Social Sciences Edition), 2010, 0(1) |
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| Authors: | LI Ting-jun KONG Ling-jiang ZHOU Zheng-ou |
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| Affiliation: | School of Electronic Engineering;University of Electronic Science and Technology of China Chengdu 610054 |
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| Abstract: | The object's echo time delay often fluctuates in ground-penetrating radar (GPR) application due to the effect of soil.Such fluctuation can hardly be amended using the traditional algorithm with constant velocity to get the optimum image.A new method for precise SAR imaging is proposed by using the lateral variable velocity F-K migration in this paper.The equivalent lateral velocity can be fast estimated by the hyperbolic signatures of the echo.Experimental results show that the proposed method is more effec... |
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| Keywords: | ground penetrating radar lateral variable velocity synthetic aperture imaging velocity estimation |
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