| 机载光学图像至卫星光学图像转换方法研究 |
| |
| 引用本文： | 肖青,李敏.机载光学图像至卫星光学图像转换方法研究[J].北京师范大学学报(自然科学版),2007,43(3):234-240. |
| |
| 作者姓名： | 肖青 李敏 |
| |
| 作者单位： | 1. 核工业北京地质研究院遥感重点实验室,100029,北京
2. 北京师范大学地理学与遥感科学学院,遥感科学国家重点实验室,环境遥感与数字城市北京市重点实验室,100875,北京 |
| |
| 摘 要： | 利用机载遥感数据,模拟了可见光/近红外卫星成像,旨在探讨遥感数据模拟的原理和方法.在模拟过程中,从遥感信号的辐射传输机理出发,综合考虑各种影响因素,对机载图像模拟星载图像的技术流程进行了一体化设计,将大气影响和空间分辨率转换进行了有机结合.对MODTRAN 4.0大气辐射传输程序的改造,使其输出符合模拟需求的6个辐射亮度值,并在此基础上建立了具有广泛适应性的大气辐射计算的查找表.对大气点扩散函数的解析近似进行了改进并软件实现,将其与改造后的MODTRAN程序结合,模拟临近像元效应.采用定量化的指标,通过比较模拟图像和实际遥感图像,对成像模拟精度进行了评价.
|
| 关 键 词： | 遥感图像 成像模拟 辐射传输 |
| 修稿时间： | 2007-02-09 |
A STUDY ON THE TRANSFORMATION OF AIRBORNE REMOTE SENSING IMAGE TO SPACEBORNE REMOTE SENSING IMAGE |
| |
| Xiao Qing,Li Min.A STUDY ON THE TRANSFORMATION OF AIRBORNE REMOTE SENSING IMAGE TO SPACEBORNE REMOTE SENSING IMAGE[J].Journal of Beijing Normal University(Natural Science),2007,43(3):234-240. |
| |
| Authors: | Xiao Qing Li Min |
| |
| Abstract: | This item simulates spaceborne remote sensing system in VIS/NIR band using airborne remote sensing data.The purpose is to probe into the theory and method of simulating remote sensing systems.A variety of effect factors are considered synthetically,a integrated design of simulation approach is provided based on radiative transfer mechanism and every important technology points are studied.An integrated technical process is designed based upon radiative transfer mechanism.The radiative transfer code MODTRAN4.0 is modified to output six radiances and a comprehensive look-up-table is built.Furthermore,Analytic approximation of atmospheric point spread function(PSF) is improved.The simulation of cross radiance influence and accurate spatial resolution transformation is achieved by combining the PSF with modified MODTRAN code.Finally,the precision of simulated data is assessed by quantitative indices. |
| |
| Keywords: | remote sensing image simulation radiometric transfer |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
