This paper deals with the fusion of TanDEM-X raw DEMs#R##N#in ascending and descending pass over Mumbai test area#R##N#and enhance its quality. Before applying fusion method, a#R##N#robust layover and shadow map has been calculated in ITP#R##N#using TanDEM-X DEM and the corresponding slant range#R##N#image. The selection of optimum weights for fusion has#R##N#been based on height error map calculated from#R##N#interferometric coherence. Results show a substantial#R##N#reduction in number of invalid pixels after fusion. In the#R##N#fused DEM, invalid is only 1.2%, while ascending and#R##N#descending pass DEMs have 6.7% and 5.7% respectively.#R##N#The improvement in accuracy of the DEM is very slight in#R##N#this case which is due to the coarse resolution of the SRTM#R##N#DEM used as reference.
['Rinki Deo', 'Cristian Rossi', 'Michael Eineder', 'Thomas Fritz', 'Y. S. Rao', 'Marie Lachaise']
Fusion of ascending and descending pass raw TanDEM-X DEM