| 引用本文: | 范城城,王密,金淑英,等.基于线加速度计的高分辨率光学影像颤振检测与重建方法.[J].国防科技大学学报,2017,39(5):145-149.[点击复制] |
| FAN Chengcheng,WANG Mi,JIN Shuying,et al.Jitter detection and reconstruction method for high-resolution optical satellite images using linear accelerometer[J].Journal of National University of Defense Technology,2017,39(5):145-149[点击复制] |
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| 基于线加速度计的高分辨率光学影像颤振检测与重建方法 |
| 范城城1, 王密1, 金淑英1, 潘俊1, 王艳2, 张彪2 |
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(1. 武汉大学 测绘遥感信息工程国家重点实验室， 湖北 武汉 430079;2. 北京市遥感信息研究所， 北京 100192)
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| 摘要: |
| 卫星平台颤振条件下，推扫式高分辨率光学影像成像往往产生扭曲，从而影响影像的定位及信息提取精度。针对当前颤振下影像成像扭曲补偿的问题，提出一种基于线加速度计测量平台颤振下的稳态重成像模型实现高分辨率卫星颤振扭曲影像的重建。采用受平台颤振影响而扭曲变形的高分某型号卫星全色影像数据进行验证。分析结果表明：提出的线加速度计可以有效检测并测量出平台的颤振，设计的颤振影像地面重建模型可以有效提高光学影像成像质量，补偿后影像扭曲变形现象明显消除。 |
| 关键词: 高分辨率光学卫星 颤振检测 颤振补偿 线加速度计 稳态重成像模型 |
| DOI：10.11887/j.cn.201705023 |
| 投稿日期：2016-05-16 |
| 基金项目:国家自然科学基金资助项目（41371430,91438112,91438203,91438111,40901209）；国家重点基础研究发展计划资助项目(2014CB744201〖KG-*2〗,012CB719902,2012CB719901) |
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| Jitter detection and reconstruction method for high-resolution optical satellite images using linear accelerometer |
| FAN Chengcheng1, WANG Mi1, JIN Shuying1, PAN Jun1, WANG Yan2, ZHANG Biao2 |
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(1. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China;2. Institute of Beijing Remote Sensing Information, Beijing 100192, China)
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| Abstract: |
| Under the condition of satellite platform′s jitter, the push-broom high-resolution optical imaging often produces distortion, which affects the accuracy of the image positioning and information extraction. According to the critical compensation issue for distorted images, a steady-state imaging model with the linear accelerometer directly measuring platform jitter was proposed to achieve reconstruction of high-resolution distorted images. The effectiveness was validated by using the distorted panchromatic image of a high-resolution satellite affected by platform jitter. The analysis results show that the linear accelerometer can effectively detect and measure the platform jitter, the designed on-ground reconstruction model of jitter image can effectively improve the distorted imaging of push-broom optical image caused by platform jitter, and the jitter image′s distortion phenomenon can be obviously eliminated. |
| Keywords: high-resolution optical satellite jitter detection jitter compensation linear accelerometer steady imaging model |
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