Continuation: TABLE N° 2 
TRIANGULATED STRIPS WITH THE INSTRUMENTAL METHOD 
  
  
24 
n5 
Ct 
26 
Country 
SWEDEN 
SWITZERLAND! 
TURKEY 
survey 
purpose 
Flight 
  
Organization 
map scale 
— Photo- 
1 Tac PESE hin 
total area | Cameras | graphic 
material 
The State Power 1 : 40.000 
Board 1 : 10.000 | 
1421 models | 
|1 : 4.000 | 
|1 : 1,000 | 
12,103 models | | 
| |, Ji 
The Roads and i : 2.000 | 
Waterways Ad- |l: 4.000 | 
ministration 1100 models 
|a year 
  
1 : 10.000 
] : 8.000 
] : 4.000 
200 models 
a year 
For study 
purpose: see 
paper «Ste-| 
reotriangula- | 
tion with pho- 
tographs from 
10.000 m alti- | 
tude » | 
| Int. Hyd.Rev. 
|Nov. 1958 
The Hydrogra- 
phie Depart- 
ment of the Na- 
tional Board of 
Shipping and 
Navigation. 
  
Division of Pho- |Study pur- 
togrammetry at |poses 
| 
the Royal Insti- | 
tute of Techno-| 
logy 
Three private [100 models 
Agencies each 
E. T. H. Zurich |Study pur-|R.C. 7 plates 
Photogramme- |poses 
trisches Institut 
Strip N 
Block Verco- 
ors 
Many strips 
for the O.E. 
E.P.E. 
Turkish Geode- 
tie Service 
i Flight 
Camera = 
: altitude 
calibra- 
tion and 
| direction 
4.000 m 
2.000 m 
11.500 m 
14.000 m 
2.000 m 
10.000 m 
2.200 m 
8.000 m 
Photo 
scale 
Overlap Auxiliary 
and T. 
^ equip- 
strip ments 
length 
Ground 
character- 
istics 
Total 
for 
strips 
number 
  
  
  
9 models |Statoscope 
52 km 
  
lon the terrain. 
Ground control points |— 
Position of 
control points Type 
in the strip 
= -———| 
| 
| 
| 
| 
| 
| 
| 
| 
| 
| 
| 
| 
| 
| 
| | 
| | 
Control points are|Natural de-| 
usually available/tails for 
after four - five mo- photo- 
|dels. Sometimes in- graphs 
dipendent distances|from 4.000| 
in intermediate mo-|m other-| 
|dels are measured wise signal-| 
lled points 
Use of the telluro- 
meter 
At the beginning, 
in the middle and 
at the end. 
Bridging 
  
Bridging characteristics 
  
  
  
  
  
  
  
Plotting instruments 
Dos 1] P iL 
Di iis Ld: | Thermical Operators | Relative 
Plotting Preli- | character- | at and 
instru- minary istics | and Bridging absolute 
ments tests of | working method orientation 
rooms | shifts of models 
| : 
Balplex | | Model trian- 
Kelsh | | gulation me- 
| | | thod 
A. 7 | | | 
A. 8 | | 
| | 
| | 
— j= — | ieee eee, =] ———] L—À————————— — | 
A. 8 |Grid test in | Model trian- | 
Ithe indivi-| | gulation me- | 
|dual projec- | | |thod | 
Itorand with | | | | | 
\model me- | | 
thod | | | 
| | | | 
Balplex [Single grid] | 
|method | 
| 
= = : —— | 
A. 7 Single grid Combination |All models are 
measure - between mo-|checked with y - 
ment |del and block parallax measu- 
triangulation rements 
| 
Model trian-{ Numerical me-| 
|gulation and|thod 
|ordinary ae- | 
rial triangula- | 
[tion 
| 
À. 7 Indipendent| | 
The strip triangulation is used for bridging one or two models between models that contain the required number of control points 
model 
gulation 
| . . 
free bridging | 
trian-| 
| 
| 
d 
Adjustment of| 
A. distortion | 
B. refraction | Planimetry 
shrinkage 
Adjustment of strips 
| Use of data, Use | Use of 
| | 
AWimetry | from of : other 
auxiliary | electronic | equip- 
| 
equipments, computers | ment 
| | 
  
Graphical mo- 
del triangula- 
tion 
Numerical mo- 
del triangula- 
tion 
  
  
  
| 
11,5-9 hours 
| 
| 
tn | tee 
  
| 
Facit EDB | 
| | 
  
  
| 
|The coordinate 
[transformation 
[to the ground 
lis made as si- 
|milarity trans- 
[formation 
| 
| 
| 
| 
| 
| 
| 
| 
| 
| 
^] 
(See methods which are 
in Geographical Survey office 
Use : : 
of data Time N° of 
from | required | repe- | 
auxiliary for model | titions | C. film | 
equipments | 
| 
| | 
| 
| 
| 
| 
| | 
| 
|Statoscope |3-4 hours | 2 
  
| 
| Facit EDB 
used 
  
Reached percision 
Mean errors 
Tests 
% 
Z 
y 
0,15-0,20 per thou- 
sands of flight altitude 
+ 2 m 
The practical result showed satisfac- 
tory agreements with the theory 
3,4 m 
+ 2,7 m 
+ 3,0 m 
| -- 2,5 m 
See the O.E.E.P.E. Com. A. Report