| 高分辨率遥感卫星颤振探测的相位相关分析法 |
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| 引用本文： | 童小华,叶真,刘世杰,谢欢,金雁敏,陈鹏.高分辨率遥感卫星颤振探测的相位相关分析法[J].测绘学报,2018,47(10):1346-1352. |
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| 作者姓名： | 童小华 叶真 刘世杰 谢欢 金雁敏 陈鹏 |
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| 作者单位： | 同济大学测绘与地理信息学院, 上海 200092 |
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| 基金项目： | 国家重点研发计划（2017YFB0502903；2018YFB0505402）；国家自然科学基金（41631178；41771483） |
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| 摘 要： | 平台颤振是影响高分辨率卫星影像几何和辐射质量的关键因素。为提高从影像反演平台颤振特性的可行性和可信度，本文提出基于局部频率分析相位相关的智能化视差法颤振探测方法。通过结合结构影像表达和相位相关，并充分利用影像的局部和全局相位信息，减少了辐射变化和噪声等干扰因素对亚像素偏移值估计的影响，同时融入视差法颤振探测框架，保证精确稳健的密集匹配，从而实现高效的平台颤振精密探测。通过采用实际辐射变化数据集的算法对比及采用资源三号卫星影像的颤振探测试验验证了本文方法的有效性。结果表明，局部频率分析相位相关算法在辐射差异和噪声等情况下效果优于其他主流相位相关算法，匹配精度达到0.05个像素，本文颤振探测方法有效估计了资源三号卫星的颤振信息。
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| 关 键 词： | 卫星颤振 颤振探测 局部频率分析 相位相关 |
| 收稿时间： | 2018-05-28 |
| 修稿时间： | 2018-07-06 |
Jitter Detection for High Resolution Satellites Based on Phase Correlation with Local Frequency Analysis |
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| TONG Xiaohua,YE Zhen,LIU Shijie,XIE Huan,JIN Yanmin,CHEN Peng.Jitter Detection for High Resolution Satellites Based on Phase Correlation with Local Frequency Analysis[J].Acta Geodaetica et Cartographica Sinica,2018,47(10):1346-1352. |
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| Authors: | TONG Xiaohua YE Zhen LIU Shijie XIE Huan JIN Yanmin CHEN Peng |
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| Institution: | College of Surveying and Geo-informatics, Tongji University, Shanghai 200092, China |
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| Abstract: | Jitter is a crucial error source that undermines the geometric and radiometric performance of satellite imagery.In order to enhance the feasibility and trust of retrieving jitter from imagery,this paper proposes an intelligent jitter detection method using parallax observation based on phase correlation with local frequency analysis.Through connecting structural image representation with phase correlation,the local and global phase information is fully utilized to reduce the influence of radiometric variation,noise and other interferences on subpixel translation estimation.The subpixel phase correlation is integrated into the framework of jitter detection using parallax observation,which ensures the accurate and robust dense matching and achieves effective jitter detection.The effectiveness of the proposed method is demonstrated by method comparison using images with realistic radiometric difference as well as jitter detection test using ZY-3 images.The promising results indicate that,the subpixel phase correlation method with local frequency analysis outperforms other state-of-the-art methods in the presence of radiometric difference and noise,achieving a matching accuracy of 0.05 pixels,and the proposed jitter detection method effectively estimates the jitter information of ZY-3 satellite. |
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