| 光谱学与光谱分析 |
|
|
|
|
|
| Atmospheric Adjacency Effect Correction of ETM Images |
| LIU Cheng-yu1, CHEN Chun1*, ZHANG Shu-qing2，GAO Ji-yue1 |
1. College of Urban and Environmental Sciences, Northeast Normal University, Changchun 130024, China
2. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China |
|
|
|
|
Abstract It is an important precondition to retrieve the ground surface reflectance exactly for improving the subsequent product of remote sensing images and the quantitative application of remote sensing. However, because the electromagnetic wave is scattered by the atmosphere during its transmission from the ground surface to the sensor, the electromagnetic wave signal of the target received by the sensor contained the signal of the background. The adjacency effect emerges. Because of the adjacency effect, the remote sensing images become blurry, and their contrast reduces. So the ground surface reflectance retrieved from the remote sensing images is also inaccurate. Finally, the quality of subsequent product of remote sensing images and the accuracy of quantitative application of remote sensing might decrease. In the present paper, according to the radiative transfer equation, the atmospheric adjacency effect correction experiment of ETM images was carried out by using the point spread function method. The result of the experiment indicated that the contrast of the corrected ETM images increased, and the ground surface reflectance retrieved from those images was more accurate.
|
|
Received: 2009-12-02
Accepted: 2010-03-06
|
|
|
|
Corresponding Authors:
CHEN Chun
E-mail: chenc@nenu.edu.cn
|
|
[1] Kaufman Y J，Karnieli A，Tanre D. IEEE Transactions on Geoscience and Remote Sensing，2000，38(1)：525.
[2] XU Xi-ru(徐希孺). Physics for Remote Sensing(遥感物理). Beijing：Peking University Press(北京：北京大学出版社)，2006. 328.
[3] Liang Shun-lin，Fang Hong-liang，Chen Ming-zhen. IEEE Transactions on Geoscience and Remote Sensing，2001，39(11)：2490.
[4] Vermote E，Tanre D，Deuze J，et al. 6S User Guide Version 2，1997. 1.
|
|
|
|
