All conditions are here uncorrelated and we obtain 
vi = 2k; + ka 
en ahora aba 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
Vo E eT. Ak, + ko 
Nga 7. k4 + kı 
Va — + kh tk, 
Vy = kır Ka 
Va — k4 | ka 
vy — — 2ke 
Vg — - - Aka 
and vv — 12k,? + 6k92 + 6k32 + 6k? 
1.2 CLOSURE CONDITIONS 
12 
The closure conditions imply angular, longitudinal, transversal and 
height connections. These conditions may be expressed by aid of paral- 
| ll laxes with the following formulas 
H hi [—2Pı — 2Pa + Pa + Pa * ps t ps] 4 Wl 5 0 
1 10 [-—p; + Pal dw 94 
| : [—1p; + (i 1)p2] Wars A Q 
| [— ps + ps + Ps — Pol Fw, ,= 0 
n [1 pa — (1— 1)p, 1 ps + (1 Lipgl + w. 5 = 0 
| 2d |. 3 
| rae 1)dZ, ,—2(n—i-F 1) (p, — pse)] * Ws 0 
n [— (n —1-F Dps * (n— 1)p, t (n— i + 1)ps— (n—1)pg + 
| *AF aZ, d b wu 
fy ni 
[|] = Sum of parallaxes in all models 
1 = 1 for the first model 
2 for the second model 
3 for the third model a. s. o. 
n = number of models to be adjusted. 
ddr 
Wait h 
W acl Ww, 
n-rz v 
Wars ET br ww, —-h-w, 
m E 2db - w, 
| | b > => m / 
i "n M n+4 + h