88 
  
  
Vm? n) 
^ Mí m- : my 
150 + 
100 4 
50 4 
0 T T T T T —>n 
10 20 30 40 50 
Diagram 22. Model triangulation. Mean values of radial standard errors. Bridging. 
h 
So — = 1 
ent lengths of the strip and the mean value can be determined with 
elementary methods. 
4.1. Stereo-radial triangulation 
From (143) and (146) we find 
h? 
2 ind 4n? - 8 amm—— 4 ( 3 | 2 42 29 m2 | 99 25 
m, — m, + M, = 8, x; (4 p! — 8np® + 4 n° p? — 22 p? + 22 np) (351)