Figure 12. Merged image of orthorectified SAR and relief map 
33 
Figure 10. Local magnification of orthorectified SAR 
Figure 11. Local magnification of relief map 
Point Known Ortho-rectified Difference 
No. Coordinates(m) Coordinates(m) (m) 
East 
North East North 
East 
North 
1 
22973.87 
6895.80 22978.13 6915.63 
4.26 
19.83 
2 
21639.46 
19029.50 21590.63 19046.88 
-48.83 
17.38 
3 
24521.58 
20229.97 24521.88 20246.88 
0.29 
16.90 
4 
32013.47 
16323.84 31953.13 16371.88 
-60.34 
48.03 
5 
36280.20 
8097.52 36290.63 8103.13 
10.42 
5.61 
6 
31419.19 
7630.11 31409.38 7628.13 
-9.82 
-1.98 
7 
23419.89 
10441.22 23415.63 10484.38 
-4.27 
43.16 
8 
25002.39 
11709.89 25015.63 11728.13 
13.23 
18.24 
9 
24855.49 
15095.23 24859.38 15128.13 
3.88 
32.89 
10 
21723.88 
13112.1021696.88 13128.13 
-27.01 
16.02 
11 
22505.11 
10254.25 22496.88 10284.38 
-8.24 
30.12 
12 
24348.03 
9052.356 24328.13 9078.13 
-19.90 
25.77 
13 
25610.02 
6154.45 25609.38 6134.38 
-0.64 
-20.07 
14 
31001.50 
16257.07 30990.63 16290.63 
-10.87 
33.56 
15 
34737.77 
15215.42 34759.38 15246.88 
21.61 
31.45 
16 
35752.71 
17205.23 35740.63 17234.38 
-12.08 
29.14 
Easting rms 21.61m, Northing rms 16.95m, Horizontal rms 
27.46m 
Table 1: The results of accuracy check 
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