from 
ter of 
plane 
ed. 
es ¢, 
; map 
plane 
of the 
(3) 
tional 
tesian 
odetic 
(4) 
(5) 
(6) 
(7) 
(8) 
p.À) is 
(9) 
centric 
y the 
stween 
le $ is 
  
Equator 
Normal to the 2 NT 
. . ^ e I 
ellipsoid ^ 
P * Ps 
* D 
4 
‘ 0 
t Po 0 
e x 
4 NÉ 2). 
. / d dr, 
s 
4 1 i 
4 4 1 > 
i \ 
x 
1 ba 
Meridià 
« - ax D 
gan WT 
Men 
  
  
Tangent plane T (Minimal distance ) 
IN 
0 Y - axis 
  
p 
Fig (2) Geometry of the perspective projection (minimal distance) 
333 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B4. Vienna 1996