我国“海洋1”号卫星(HY-1)CCD图像数据定量化条带消除研究

孙凌; 唐军武; 张杰

我国“海洋1”号卫星(HY-1)CCD图像数据定量化条带消除研究

1.
中国科学院海洋研究所, 山东, 青岛, 266071
2.
国家卫星海洋应用中心, 北京, 100081
3.
国家海洋局第一海洋研究所海洋环境科学与数值模拟国家海洋局重点实验室, 山东, 青岛, 266061

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出版历程
- 收稿日期: 2001-08-24
- 修回日期: 2002-01-18

A study of quantitative striping removal algorithm for HY-1 CCD data

摘要

摘要: 条带(striping)对于大量的航天和航空传感器来说是一种普遍存在的现象,任何使用多个探测器进行数据获取的遥感器图像数据中均存在条带.目前消除条带的算法主要是针对光机扫描仪,对于CCD相机工作做得比较少.针对HY-1CCD线阵推扫式多光谱相机的特点,以及发射前辐射定标的结果,对遥感器图像数据中的条带问题进行了预研,提出了一种定量化的消条带算法.该方法根据卫星数据特性求出各探测器间的均衡化曲线以反映探测器之间的差异,并据此来消除条带.实验结果表明该方法能够有效解决CCD相机的条带问题,而且可以保持数据原有的物理意义,并可与在轨辐射校正衔接,保证发射前后定标算法的一致性.
- CCD相机 /
- 条带消除算法
Abstract: Striping is a common phenomenon in remote sensing data,but relatively little work has been done in the realm of CCD.A ccording to the characteristics of HY-1 CCD push-broom multispectral camera and the result of pre-launch radiometric calibration,striping arising from the nonuniformity of the detectors is removed using a quantitative method by estimating equalization curves.This method can preserve the physical meaning of the raw data,and can work together with "in-orbit" calibration without much modification.
- CCD /
- striping removal

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