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遥感技术与应用  2015, Vol. 30 Issue (4): 810-818    DOI: 10.11873/j.issn.1004-0323.2015.4.0810
遥感应用     
面向内陆水环境监测的GF-1卫星WFV数据特征评价
梁文秀1,2,李俊生2,周德民1,申茜2,张方方2
(1.首都师范大学资源环境与旅游学院,北京 100048;
2.中国科学院遥感与数字地球研究所数字地球重点实验室,北京 100094)
Evaluation of GF-1 WFV Characteristics in Monitoring Inland Water Environment
Liang Wenxiu1,2,Li Junsheng2,Zhou Demin1,Shen Qian2,Zhang Fangfang2
(1.College of Resources Environment and Tourism,Capital Normal University,Beijing 100048,China;
2.Key Laboratory of Digital Earth Science,Institute of Remote Sensing and Digital Earth,
Chinese Academy of Sciences,Beijing 100094,China)
 全文: PDF(3030 KB)  
摘要:

各种卫星遥感数据在内陆水环境监测中得到日益广泛的应用并各具优势和不足。2013年4月发射的高分一号(GF\|1)卫星搭载的宽视场相机(WFV)为水环境监测提供了新的数据源。通过与Landsat8 OLI和HJ\|1 CCD对比,从辐射、光谱和空间3个方面客观评价GF\|1 WFV 的数据特征,并分析其在内陆水环境监测应用中的优缺点。结果表明:WFV在内陆水体区域的灰度级数和信噪比高于CCD但低于OLI 10 bit的量化等级足以满足水质参数反演的精度要求,在水体监测应用中WFV现有辐射定标系数需修正;WFV的波段数量和宽度与CCD基本一致,比OLI的少且宽,不能很好地捕捉内陆水体的光谱特征;WFV16 m的空间分辨率和800 km的幅宽,明显优于CCD和OLI。总之,WFV在大范围中小型内陆水体环境动态监测方面具有良好的应用前景。

关键词: 高分一号卫星宽视场相机内陆水环境监测特征评价应用潜力分析    
Abstract:

Remote sensing technology has been widely applied in monitoring inland water environment.Satellite remote sensing data commonly used in monitoring water environment which has both advantages and disadvantages.The GF-1 satellite was launched in April,2013,carrying a Wide Field of View Camera (WFV),which provides a new data source for monitoring water environment.By comparing with Landsat8 OLI and HJ-1 CCD data,the radiant,spectral and spatial characteristics of GF-1 WFV data were evaluated,and the advantages and disadvantages of applying WFV data in monitoring inland water environment were analyzed.The results show that:①GF-1 WFV is superior to HJ-1 CCD in radiometric resolution and SNR,and the WFV data,which is quantified in 10 bits that can meet the accuracy requirement of monitoring water environment,the current calibration coefficient of WFV should be corrected when it is used in monitoring water;②GF-1 WFV is similar to HJ-1 CCD but inferior to Landsat8 OLI in spectral resolution,and it can't well identify subtle spectral features of inland waters;③The spatial resolution and swath of WFV are obviously superior to that of HJ\|1 CCD and Landsat8 OLI.In short,GF-1 WFV has much potential in dynamically monitoring large zone middle\|to\|small scale inland water bodies.

Key words: GF-1 satellite    WFV    Inland water environment monitoring    Characteristics evaluation    Potential analysis
收稿日期: 2014-05-27 出版日期: 2015-09-22
:  TP 75  
基金资助:

高分重大科技专项“环境保护遥感动态监测信息服务系统”(05-Y30B02-9001-1315-5),国家863计划项目(2013AA12A302)。

通讯作者: 李俊生(1979-),男,吉林吉林市人,副研究员,主要从事水环境遥感方面的研究。Email:lijs@radi.ac.cn。    
作者简介: 梁文秀(1990-),女,山东枣庄人,硕士研究生,主要从事水环境遥感方面的研究。Email:wenxiushsh@163.com。
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引用本文:

梁文秀,李俊生,周德民,申茜,张方方. 面向内陆水环境监测的GF-1卫星WFV数据特征评价[J]. 遥感技术与应用, 2015, 30(4): 810-818.

Liang Wenxiu,Li Junsheng,Zhou Demin,Shen Qian,Zhang Fangfang. Evaluation of GF-1 WFV Characteristics in Monitoring Inland Water Environment. Remote Sensing Technology and Application, 2015, 30(4): 810-818.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2015.4.0810        http://www.rsta.ac.cn/CN/Y2015/V30/I4/810

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