79 
120 
100 
80 
60 — 
  
   
  
     
  
  
  
  
  
  
   
  
  
  
20 
0 T T T c T 
n n In n Jn 3 7n n 
8 4 3 2 3 4 8 
Diagram 17. Ordinary aerial triangulation. Standard errors of the y-coordinates. 
Bridging.” s, = 1. 
neglected we will regard the weight number (323) as representative for 
the error distribution of the y-coordinates of the strip after transforma- 
tion to the system of the ground. 
3.223. The elevations 
We start with the expression (285) and with the two first terms. 
For an arbitrary model p — 1,p we have in the center of the strip 
i-p i-5 
DH, = b X (p —$-r 1)dg, - 2 dbz; (325) 
i=1 i=1 
Since only three elevation control points are assumed to be available 
in accordance with fig. 1 the errors of the elevation in the model »,» + 1 
eg pH | 
Fr en TETE 
E I