- Figure 7 - 
The following project parameters were used in the simulations: 
  
calibrated focal length 52.0 mm 
spacing forward / vertical sensor 20.8 mm 
| spacing vertical / backward sensor 20.8 mm 
| standard deviation of image coordinates o, 5.0 um 
| object points : 100 
| x-interval of object points 100 m 
y-interval of Object points 400m 
DTM nodes 28x282784 
| DTM mesh width 75 m 
| z-coordinates of object points 415-917 m 
| flying height 2000 m 
| image scale 1:20800-1:30500 
number of orientation images 3x9=27 
x-distance between orientation images 237.5 m 
y-distance between orientation images 400.0 m 
In the first simulation the parameters of the orientation images were 
assumed as known and error-free. The resulting standard deviations of 
the object point coordinates describe the theoretical accuracy limits 
and are a good tool for the evaluation of the results of the other si- 
mulations. 
-219 -