GEOSTATISTICAL TEST USING LEAST SQUARE ADJUSTMENT COMPUTATION TO OBTAIN THE REDUCTION PARAMETER FOR DSM TO DEM CONVERSION (Study of Case: Cilacap, Indonesia)
Abstract
Abstract. ALOS satellite is one of the natural resources satellites that can be used for 3D
model applications. The problems of 3D model generation based on satellite imagery are
the model always in Digital Surface Model (DSM), not in Digital Elevation Model (DEM).
The reference system of 3D model that are produced by ALOS satellite image is still as
surface for z axis, whereas x axis and y axis has been closed to 2D reference system in
some certain datum and system of map projection. Therefore, it needs a research to observe
the accuracy and the precision of ALOS satellite data using a least square adjustment in
parameter methods. The results of this research will be used as a reference for next research
to find a way for changing DSM from ALOS satellite image to be DEM automatically.
model applications. The problems of 3D model generation based on satellite imagery are
the model always in Digital Surface Model (DSM), not in Digital Elevation Model (DEM).
The reference system of 3D model that are produced by ALOS satellite image is still as
surface for z axis, whereas x axis and y axis has been closed to 2D reference system in
some certain datum and system of map projection. Therefore, it needs a research to observe
the accuracy and the precision of ALOS satellite data using a least square adjustment in
parameter methods. The results of this research will be used as a reference for next research
to find a way for changing DSM from ALOS satellite image to be DEM automatically.
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