KE 
  
       
      
   
  
  
  
     
  
  
  
N AB 
di 
The 
Figure 5(a) Simulated image of the main channel around Mt. Fuji. Figure 5(b) Simulated image of image navigation channel. use 
has 
req 
Satellite (ADEOS AVNIR) ALC 
syn 
: : anc 
given data, the dashed line shows the matching result. The an^ 
difference is calculated by subtracting the given data from the 
data of matching result. The change of Difference in Fig 7 is 1.12 
to -1.15 pixels. The extracted attitude change difference is a fairly 4 
good approximation. v Cho poi in EE REN 
on Real Surface) (Real Surface) 
The 
CONCLUSION : anc 
h (Elevation) NO 
Image navigation in which an additional channel is added to the dex 
high Juti ; sali] fültoolf tractinz IFOV (Ideal surface) ser 
igh-resolution imager itself is a powerful tool for extracting X (The poietin mass om desi surfice oth 
motion of the imager. Simulation by means of SPOT data shows Lar 
satisfactory results in finding matching point of image navigation Figure 6 Relation between the ideal and real image of points. dat 
10 NA 
Dir ant 
5} ifference, Cor 
Sys 
PIXEL © res 
wh 
51 An 
; Vis 
10 t Matching result syr 
Given data ba 
-15 A 1 1 a A 
0 100 200 300 400 500 Td 
LINE BI 
Figure 7 Matching result. pre 
cu 
s 
channel image point on the main channel image which is key REFERENCE H 
operation for image navigation system. In some cases, image Th 
matching accuracy degrades due to the low signal to noise ratio at National Space Development Agency of Japan, (1994). ADEOS ch 
the vegetated area but is resolved by filtering the estimated raw REFERENCE HAND BOOK, pp. 11-4 - 11-6. thi 
attitude change data. After the launch of ADEOS, we will process ch 
real AVNIR data to verify the image navigation system 
performance. 
192 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B1. Vienna 1996