| 推扫成像中针对细分采样累加的反降晰算法 |
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| 引用本文： | 张滢清,王建宇. 推扫成像中针对细分采样累加的反降晰算法[J]. 量子电子学报, 2008, 25(5): 610-614 |
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| 作者姓名： | 张滢清 王建宇 |
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| 作者单位： | 1. 华侨大学信息科学与工程学院,福建,泉州,362021
2. 中国科学院上海技术物理研究所,上海,200083 |
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| 基金项目： | 福建省青年科技人才创新基金，华侨大学高层次人才科研启动金资助项目 |
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| 摘 要： | 为了降低细分采样累加方式对线列推扫成像清晰度的影响,利用孔径函数的变换,提出了相应的反降晰方法,实现了同一个位置上的像元累加,使得推扫方向上的孔径函数和线列方向等同,消除了累加过程中像元位移的影响.在细分采样累加倍数为4的情况下,Nyquist频率处的传递函数值提高7%.通过对反降晰算法的仿真采样验证,结果表明本算法完全可以达到预定要求,算法简单,只需少量加法器,在目前的成像仪电路中稍微修改可编程芯片即可投入工程应用.
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| 关 键 词： | 遥感 反降晰 孔径函数 线列推扫 |
| 收稿时间： | 2007-10-15 |
Deblurring algorithm of oversample-cumulating in push-broom imaging system |
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| ZHANG Ying-qing,WANG Jian-yu. Deblurring algorithm of oversample-cumulating in push-broom imaging system[J]. Chinese Journal of Quantum Electronics, 2008, 25(5): 610-614 |
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| Authors: | ZHANG Ying-qing WANG Jian-yu |
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| Affiliation: | ZHANG Ying-qing WANG Jian-yu (1 School of Information Science , Engineering,Huaqiao University,Quanzhou 362021,China,2 Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China) |
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| Abstract: | In order to eliminate the impact of oversample-cumulating method on clarity of linear push-broom imaging,with the transition of aperture function,a deblurring method was put forward to cumulate the pixel in the same sample position,thus the aperture function in push-broom direction was equal to the linear direction,and the impact of pixel shift in cumulating was eliminated.With the sample-cumulating rates of 4,at Nyquist frequency the value of pixel transfer function was increased by 7%.Through simulating o... |
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| Keywords: | remote sensing deblurring aperture function linear push-broom |
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