of wet 
GCP in geodetic and carto- ; digital elevation 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
    
  
  
  
  
  
  
  
  
  
  
  
  
   
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
    
jf sea- 
: range-Doppler 
filtering function (reference) 
1 
| image coregistration : 
| value added products in 
- cartographic reference system | 
- SAR image geometry : | 
: I 2 
r moni- backscanering coefficient | 
pi lied. in image geometry 
ring is radiometricaily 
condly, | corrected images 
of ap- | ; 
eocoding and ORA 
ı these 8 z 
ded to radiometrically/geo- multitemporal : ' 
| - are metrically corrected ratios wetness map | 
21. The | 
illus- | 
| 
Fig. 1: Postprocessing scheme for SAR data with the Multiple Optimal Resolution Approach (MORA) PS 
| 
reached | 
^ cube. | | 
ation | | 
es) D) CSD NA 
| ORA/MORA 
monitoring mapping 
iS re- 
>r val- 
ncludes : 
rom the wetness map snow cover map 
wetness 
-sensor 
data fusion 
technique 
| improved 
L wet snow map 
as se- 
roduced 
1993, | 
| Fig. 2: Basic concept of SAR and EO data fu- Fig. 3: Testsite GRISONS 
: sion process for snowpack mapping and Subsets of ERS-1 PRI imagery (top) 
iius: monitoring from descending (left) and ascending 
ilities (right) orbits of 1.05.93, and of 
he data Landsat-5 imagery (bottom), Bd. 4 
rom the (NIR) of 15.02.93 (left) and 22.05.93 
3 part (right) 
ly ERS- 
Intemational Archives of Photogrammetry and Remote Sensing. Vol. XXXII, Part 7, Budapest, 1998 353