115) 
135) 
oto- 
ery 
e of 
nly 
the 
in- 
A 7, 
in- 
rei- 
uch 
|tta- 
  
’ 
V xh Xy 
Ed — dz — — dk — — 
y 0 ^ 0 C c? 
X d 230 4- y' 
— — t + — —À 
std 
where s = Vx’2 + (230 4 y)? 
dl = the influence of x-inclination error 
dt — , 
35 
72 
T hdg — (1 d vs hdo — 
dl —dy (18) 
(19) 
,, latitude distortion error 
The normal equations are set up and solved. There is a correlation 
between dz, and dl. The radial distortion determined from 5 points: 
€ 
cy2 cV2,, (20) 
dr zu VL RSV KL 
" 8h n 4h 
where 
R, see eq. (4) and (5) 
Dy. rd A, Ta pGx, 2x. b (2D 
d Nan m Xn pm 2y, FT ui + Yan 4 Van) = q (xy, 7 Ron 4 
+ 2X CT 2X in = Vin = Yon + 2Van 4 2V 4) 
and 
K, p and q are factors varying from radius to radius. 
With the aid of table 1 it is possible to compute the radial distortion 
according to the formulas mentioned above. 
Tablel a = | em 
Radius 
Un SUN -— 
OO NO 
€ 
9 
10 
The shape of the distortion curve in 
shown in diagram 5. 
K 
— 14.765 
— 11.307 
7.893 
6.239 
5.170 
4.566 
4.212 
3.986 
3.915 
3.927 
OO Ww 
DD UN 
q 
0.957 
917 
‚878 
‚842 
808 
776 
747 
718 
692 
667 
diagram 4 will be changed and is 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
a a 
ee