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| 利用正演计算方法分析地形和噪音对多波段遥感数据的影响 | |
| 引用本文： | 肖正清,蔺启忠.利用正演计算方法分析地形和噪音对多波段遥感数据的影响[J].遥感技术与应用,2000,15(4):211-213. |
| 作者姓名： | 肖正清 蔺启忠 |
| 作者单位： | (1北京邮电大学计算机学院 北京 100876；2中国科学院遥感应用研究所 北京 100101) |
| 摘 要： | 在没有干扰和噪音影响的理想条件下,多波段遥感数据中不同地物在散点图上的位置是一 个点。但在实际情况中,地形和噪音大大地改变了目标分布形状。利用DEM数字高程数据以及太 阳高度角和方位角等参数计算出地表接收到的辐射能量,然后设置已知目标,利用散点图来分析不 同反射率下目标所占的空间位置。再通过增加不同强度的噪音,分析目标在散点图上的变化规律, 以便寻找目标分离的有效特征。 |
| 关 键 词： | DEM 辐射量 地形 噪音 多波段遥感数据 |
| 文章编号： | 1004-0323(2000)04-0211-03 |
| 收稿时间： | 2000-03-14 |
| 修稿时间： | 2000年3月14日 |
The Forward Calculation of Topography and Noise Beared in the Multiple-band Remotely Sensed Data |
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| XLAO Zheng-qing,LIN Qi-zhong.The Forward Calculation of Topography and Noise Beared in the Multiple-band Remotely Sensed Data[J].Remote Sensing Technology and Application,2000,15(4):211-213. | |
| Authors: | XLAO Zheng-qing LIN Qi-zhong |
| Affiliation: | (1.Beijing University of Post and Telecommunications,Beijing100876,China；2Institute of Remote Sensing Applications,The Chinese Academy of Sciences,Beijing100101,China) |
| Abstract: | The 2\|D vector distribution in scatter\|plot of the targets contained remotely sensed data is a point when ignoring the topographic effect and noises. However all these effects and noises exist in reality. In order to recognize the targets from remotely sensed data, the sun radiation energy is calculated in this paper on the base of the geometry model from DEM and the data reception time. The different reflectance values can be set up for image processing experiments through the scatter\|plot visualization. Different noises were added to the data, the vector variation in 2D scatter\|plot can be studied. All these studies can help to make clear the effective features for targets extraction. |
| Keywords: | DEM Radiation Topography effect Gaussian white noise Multiple\|band remotely sesend data |
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