[1]穆 悦,安裕伦,王 喆,等.不同地形校正模型计算地形复杂山区地表反射率的对比[J].山地学报,2014,(03):257.
　MU Yue,AN Yulun,WANG Zhe,et al.Comparison of Different Topographic Correction Models for Surface Reflectance Calculating in Rugged Terrain Area[J].Mountain Research,2014,(03):257.
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不同地形校正模型计算地形复杂山区地表反射率的对比()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2014年03期
页码:
257
栏目:
山地研究
出版日期:
2014-03-01

文章信息/Info

Title:
Comparison of Different Topographic Correction Models for Surface Reflectance Calculating in Rugged Terrain Area
作者:
穆 悦; 安裕伦; 王 喆; 高 翔
1.贵州师范大学 地理与环境科学学院，贵州 贵阳 550001;
2.贵州师范大学 山地资源与环境遥感重点实验室，贵州 贵阳 550001
Author(s):
MU Yue;  AN Yulun;  WANG Zhe;  GAO Xiang（266）
1.School of Geographic and Environmental Sciences, Guizhou Normal University, Guiyang 550001, China;
2.Key Laboratory of Mountain Resources and Environmental Remote Sensing, Guizou Normal University, Guiyang 550001, China
关键词:
地形校正; 地表反射率; 复杂地形
Keywords:
topographic correction model;  surface reflectance;  rugged terrain
分类号:
P931.91
文献标志码:
A
摘要:
地表反射率对定量遥感有重要意义，其在复杂地形区会受到地形条件影响。地形校正可以减小或消除山区遥感影像中地形因素影响。以梵净山区为研究区，利用Landsat-5 TM影像、DEM及坡度、坡向数据，采用10种地形校正模型进行比较实验，以发现其在反演地表反射率时存在的问题，并为选择适合地形复杂山区地表反射率反演的地形校正模型及相关研究提供参考。结果显示：1. SCS+C、Minnaert、b、Teillet-回归、VECA、C模型地形校正效果较好，可用于反演山区的地表反射率，但是当坡度为0°时，Minnaert、Teillet-回归、VECA模型存在问题；2. Cosine-b、Cosine、SCS和Cosine-C模型存在过度校正现象，Cosine和SCS模型甚至可能出现反射率大于1的异常值，不宜选择；3. 在通过采样获得经验参数的情况下，Minnaert模型对样点选取较为敏感，而SCS+C和b模型对样点选取的敏感性较低。在较大范围的地形复杂山区反演地表反射率时，SCS+C和b模型更合适。此外，从DEM数据、大气校正模型、地表覆被类型方面分别探讨了其对地表反射率的影响并提出了改进建议。
Abstract:
Important to quantitative remote sensing, surface reflectance is affected by complicated terrain conditions. Topographic correction can reduce or eliminate the terrain effects of image in mountainous area. By taking Fanjing Mountain of Guizhou,China as study area, using Landsat-5 TM image, DEM, slope and aspect data, and applying 10 kinds of topographic correction models to make comparison in research area, this paper aimed to find problems existing in the application, select suitable model for surface reflectance calculating in rugged terrain area, and provide reference to related research. Results shows that:(1) SCS+C, Minnaert, b, C, Teilletregression, VECA and C model, with good topographic correction effects, can be used in surface reflectance calculating in mountainous area, while Minnaert, Teilletregression and VECA model may go wrong where slope is 0°.(2) Since Cosine-b, Cosine, SCS and Cosine-C model may lead to overcorrection, and results of Cosine and SCS model may even be greater than 1, they are not appropriate to choose. (3)If achieving the empirical parameters by sampling, Minnaert model showed higher sensitivity of sample points, while SCS+C and b model lower. The two are more suitable for surface reflectance calculating in large rugged terrain area. Moreover, from DEM data, atmospheric correction model, land cover types, its influence on surface reflectance were discussed respectively and improved suggestions were put forward.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2013-08-20；修回日期（Accepted）：2013-09-30。
基金项目（Foundation item）：国家自然科学
基金项目(41161002)，国家重点基础研究发展计划(973计划)(2006CB403200)。[Supported by National Natural Science Foundation Program(41161002),National Basic Research Program of China(973 Program)
[2006CB403200}.]
作者简介（Biography）：穆悦（1988-），女，河南信阳人，硕士研究生，研究方向：地图学与地理信息系统。[Mu Yue(1988-),female,postgraduate,major in Cartography and geography information system] E-mail：gfjiyue@163.com *
通信作者(Corresponding author): 安裕伦（1957-），男，贵州贵阳人，教授，硕士生导师，研究方向：自然地理学、GIS和环境遥感研究。[An Yulun (1957-),male,professor,Master Tutor,major in physical geography,GIS and environmental remote sensing.] E-mail: anyulun@126.com
更新日期/Last Update: 1900-01-01