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首页> 外文会议>Asian Conference on Remote Sensing(ACRS2006) vol.2; 20061009-13; Ulaanbaatar(MN) >DEVELOPMENT OF ORIENTATION AND DEM/ORTHOIMAGE GENERATION PROGRAM FOR ALOS PRISM
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DEVELOPMENT OF ORIENTATION AND DEM/ORTHOIMAGE GENERATION PROGRAM FOR ALOS PRISM

机译：芦荟棱镜的定向和DEM /正交图像生成程序的开发

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Orientation and DEM/orthoimage generation programs with open algorithms for ALOS PRISM were developed in order to determine error factors and to improve geometric accuracy. The programs were verified using simulation data obtained by ADS40, an airborne three line sensor like the PRISM before the launch on January 24, 2006. The orientation program can adjust all or part of the following errors: photographic coordinates, position and attitude of the satellite, ground coordinates of the control points, mounting angles of the radiometers, the principle distances, and the principal positions. The program worked properly for the simulation data. The error factors of the simulation data were investigated; the principle distances were the primary factor, and attitude of the platform was the secondary. The DEM/orthoimage generation program employs area-based matching with coarse-to-fine strategy. A calculation of the pixel and line number on the raw images from the ground coordinates needs long time for the PRISM. The program reduces the computation volume by interpolating the pixel and line number in ground grid space and along ground height axis. The program worked properly using the simulation data resampled into 1.6 m grid. Observing clear target settled mainly in open sky area, root mean square error was 1.13 m in vertical for the DEM, and 1.30 m in horizontal for the orthoimages. These values represent errors of the DEM and orthoimages production procedure, and pointing error on the orthoimages. Comparing the DEM with DSM obtained by LIDAR measurement, root mean square error of the DEM was 3.59 m in a mixed area of high buildings, low housing, woods, and crop fields. The error corresponds 5.7 m for the PRISM.
机译：开发了具有开放算法的ALOS PRISM定向和DEM /正射影像生成程序，以确定误差因素并提高几何精度。在2006年1月24日发射之前，使用由机载三线传感器（如PRISM）ADS40获得的模拟数据对程序进行了验证。定向程序可以调整以下所有或部分错误：卫星的摄影坐标，位置和姿态，控制点的地面坐标，辐射计的安装角度，原理距离和主要位置。该程序对于模拟数据正常工作。研究了仿真数据的误差因素；主要距离是主要因素，平台的姿态是次要因素。 DEM /正射影像生成程序采用基于区域的匹配以及从粗到细的策略。对于PRISM，从地面坐标计算原始图像上的像素和行数需要很长时间。该程序通过在地面网格空间中沿着地面高度轴插值像素和行数来减少计算量。该程序使用重新采样到1.6 m网格中的模拟数据正常工作。观察到清晰的目标主要集中在露天区域，DEM的垂直均方根误差为1.13 m，正射影像的水平均方根误差为1.30 m。这些值表示DEM和正射影像生成过程的误差，以及正射影像的指向误差。将DEM与通过LIDAR测量获得的DSM进行比较，在高层建筑，低矮房屋，树木和农田的混合区域中，DEM的均方根误差为3.59 m。 PRISM的误差为5.7 m。

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