Title :
Fusion of airborne laser altimeter and RADARSAT data for DEM generation
Author :
Hosford, S. ; Baghdadi, N. ; Bourgine, B. ; Daniels, P. ; King, C.
Author_Institution :
Bur. de Recherche Geologique et Miniere, French Geol. Survey, Orleans, France
Abstract :
This paper describes a geostatistical method for the generation of an improved accuracy digital elevation model (DEM) through the fusion of airborne laser altimeter data and a stereo-radargrammetric DEM. The results show that the accuracy of the DEM (canopy-top and ground-level) after data fusion is significantly better than that of the initial radargrammetric DEM. For the canopy-top DEM, the standard deviation of elevation errors falls from 21 m to 14 m or from 25 m to 11 m, depending on the validation source adopted.
Keywords :
airborne radar; photogrammetry; remote sensing by laser beam; remote sensing by radar; spaceborne radar; terrain mapping; topography (Earth); DEM generation; RADARSAT; airborne laser altimeter; canopy-top DEM; data fusion; digital elevation model; elevation errors; geostatistical method; geostatistics; ground-level DEM; radargrammetry; stereo-radargrammetric DEM; Area measurement; Data mining; Digital elevation models; Fusion power generation; Geology; Laser fusion; Laser modes; Laser radar; Reactive power; Satellites;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
DOI :
10.1109/IGARSS.2003.1293926
