第20卷第10期 2012年10月
文章编号1004-924X(2012)10-2324-07
光学精密工程
Optics and Precision Engineering
Vol. 20No,10
Oct.2012
全球陆地光学遥感影像获取技术与应用
王兴玲1.2,3*，刘龙飞1-2，于钢1-2，雷字1.2，陶亮1.2
（1.民政部国家减灾中心，北京100124；2.民政部卫星减灾应用中心，北京100124；
3.民政部减灾与应急工程重点实验室，北京100124）
摘要：介绍了2010年开始利用环境减灾A、B星CCD传感器获取全球陆地光学遇感影像的工作，用于研究全球地表覆盖和土地利用情况。环境减灾A，B星是我国第一个以组网方式运行的具有48h重访周期、30m中高分辨率的光学星座。利用卫星获取全球陆地光学遥感影像时不仅综合考虑了地面光照条件、云量、季节、地物特性等因索，同时考虑了卫星观测能力、地面接收能力、全球陆地分布特点、全球云量分布等多种因索。通过一年多的时间，获取了全球陆地面积85% 以上的平均云量小于20%的有效光学影像数据，获得的数据是我国首个中高分辨率全球覆盖的遥感光学影像集，已成为我国开展全球环境变化研究最重要的中高分辨率光学影像数据源。文中总结了A、B星全球陆地光学遥感影像获取
计划的思路与实际应用效果，可为后续光学星的规划及有效载荷的设计提供有益的参考。关键调：环境减灾卫星；电荷耦合器件(CCD)；逸感图像；全球影像：
中图分类号：TP751
文献标识码：A
doi;10.3788/OPE.20122010.2324
Globalopticalimageacquisitiontechnologyanditsapplications
WANG Xing-lingl-2.·, LIU Long-fei-, YU Gangl-,LEI Yul-2,TAO Liang"-
(1.National DisasterReduction Center,Ministryof CivilAffairs,Beijing100124,China; 2.Satellite DisasterReduction Application Center,Ministryof Civil Af fairs,Beijing 100124,China
3.Key Laboratory of Disaster Reduction and Emergency ResponseEngineering of the
MinistryofCivilAffairs,Beijing100124,China)
Correspondingauthor,E-mail:wangringling@ndrcc.gov.cn
Abstract: This paper introduces the acquisition of global land optical images from 2o10 by the CCD cameras on HJ-1A/B to research the global land coverage and land usage situations. The HJ-1A/B is the first optical constellation with a ground resolution of 30 m and the revisit ability of 48 h in our country.When the optical remote sensing images are acquired by the HJ-1A/B constellation, the ground lighting conditions, cloud cover, season, terrain features and other factors must be consid-ered, especially the more factors such as the satellite capacity, ground receiving ability, global land distribution and cloud distribution should be taken account of because the optical satellite has been used. Through one year's work, effective images with the cloud less than 2o % covered more than 85% of global land are obtained. It is China's first middle-high resolution global coverage optical remote
收稿日期：2012-04-30；修订日期：2012-06-28.
基金项目：国家863高技术研究发展计划资助项目（No.2009AA122002)