The symbols in these formulas are: 
Sx^ s x 0 , Sy.,-, Sz^ Sz„ the standard errors of the coordinates of the camera stations in the terrain 
system 
s f p s <p 9 -> s lo 1 -> s,o the standard errors of the final angles and ^7 
s 0 the standard error of unit weight of parallax corrections and of model coordinate measurement 
s' 0 the standard error of unit weight of image coordinate measurement determined by camera and 
projector calibration 
h the flying altitude 
c the camera constant 
b the base 
d the distance from the base to the lateral points of the relative orientation 
r' the radius of the circle upon which the image points are located from which the camera constant was 
determined at the time of calibration. 
The control points are assumed to be located as follows in the model: 
Planimetry: x = 
0 
x — b 
y = 
0 
y= 0 
Elevation: x — 
0 
x = 0 
x = h 
y = 
-\-d 
y = —d 
y = 0 
With certain generalizations and approximations the standard errors of the elements of exterior 
orientation can be computed for aerial photographs taken with several types of cameras. The following 
assumptions are made for normal angle, wide angle and superwide angle cameras: s Q — s' 0 and 
r — about 60 mm. 
h 
Further, for normal angle cameras: b — d — — , s 0 — 0.004 mm, c = 210 mm 
3/i 
for wide angle cameras: b = d= — , s 0 — 0.006 mm, c = 153 mm 
for superwide angle cameras: b = d = h, s„ = 0.010 mm c = 88 mm 
In table 4.3:1 in the Appendix the standard errors of the elements are shown. 
4.32 Single Point Resection in Space 
The following expressions for the standard errors of the elements of exterior orientation are derived 
after numerical resection and under the following assumptions: (See reference 4.3:3.) 
s x = S, 
h 1/10 7c 4 3c 2 
7 I 7 n 8a 4 L 27 
«Y 
7 /'9 ~ ~ 187 
5c_ 2 
97 
s« 
/7c 2 5c2_ 
87 6T 2