d-triangulation in 45 
a 
Scale Azimut 
errors (^y) errors 
(degree) 
— 
[^ 7 ádá— 
Alt I | Alt II| Alt] 
— 
— 1 
—03|-02| gy Uf 
=~ 046 000g {| 
— 069] 0:3|- om ! 
—092| 0400 0 
—115—023 0g n 
—137| 090 Qu]. 
— 160|—023| "004 
-15| logy 
—2.08|— 028/06 | 
—2.31| 0.00|- 006 +i 
— 
— 
— 1 
  
  
  
  
l-triangulalion in Ag 
  
  
  
Tel 
Alt II 
i Scale Azimut 
errors errors 
ym degree 
) 0.00 000 
) — 059 - (0 
) — 0.05 +001 
) — 0.50 - (4) 
3 — 0.14 * 041 
3 — 0,36 — 0,04 
j — 0.23 +003 
3 — 0.36 4 041 
) + 0.14 +00 
) — 0.50 +00 
. — 0.09 +004 
  
  
It. I and II), showing tk 
. The errors are stated i 
ith. of the. different modi 
e models, and the resi 
conditions for determiniy 
lated azimuth-determinei 
rticularly important thi 
jations and curvatures & 
nents thus being diffe! 
  
A 7 [ 
{mm 
* 1 e 
e € \ 
Nim dis iN 
05mm 
Alternative J 
LER OE oem 
fig. 21. Planemetric errors in a 10-model grid triangulation in A 6. In alternative II 
every other model has heen rotated 200° 
04 Applications 
In recent years, RAK has carried out a number of large mapping assignments 
vith the help of photogrammetric control surveys done on the principles de- 
strbed above. Most of the maps were made for the Swedish State Power Board 
and private power com 
I 
panies. In most cases, the base lines were laid out on large 
ikes and the distance measurements were made during the winter on the ice. 
The ends of the base lines were marked, and aerial photographs were taken in 
the spring as soon as the ice was 
f 
i 
mi 
gone. The photographs were taken at heights 
rom 4,000 to 6,000 metres. A large number of minor control points were marked 
n the parts of the mapped areas where it was likely that measurements or deli- 
nations would be made. The coordinates of these control points were then used 
63 
  
  
  
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ete SE