TABLE N? 5 
TRIANGULATED BLOCKS WITH THE INSTRUMENTAL METHOD 
  
  
  
  
  
  
  
  
  
  
| 
: m | | Bridging 
Survey l'otal | 1. | ; . 2: | : 
purpose area | Flight , | | Ground Control Points rr — eU per SRE — Adjustment of blocks 
| | | | Plotting instruments | Bridging characteristics 
No | Country Organization se = = = en b s dete CRUS GU zd is um | SE —| ee m "ail 
| Les | : — ám i 7 1 ever UT Reached precision 
Map No of | Phot Oc] | | Number | Thermi 1 | | Relati No and | Use | Adjust t e | 
wnlo is ip. "hoto | verla | . | ‘ . 4. ca € | | elatıve | ) | : Adjustment o Ts a Us Js 
scale blocks | Photo- | Camera 1 | à rt n | Auxi | | Ground | ipa Plotting Preli- | character- opens | and | position | of data | Time | Ne of | P distortion | Us of data] U e e 
| Ce ras | amhic im. | scale and sidelap | yosition me. i. : | a idei | Ys | | . | j| | ; | : rom | 0 of other 
| Cameras | graphic calibra- and flight I | liary character-| of control l'ype instru- minary |  isties | n | Bridging | absolute | % pons from | required repe- | B. refraction | Planimetry Altimetry 9r | : : 
| material tion | : | equip- | istics points ments tests | of | working | method | orientation | adiacent auxillary | for models | titions | C. film | auxiliary | electronic equip- 
| altitude | block she | | . a | n S 4 | 3 : dala : | = a 
e | ck shape | ments in the block rooms | shifts | of models Jr: strips | equipments | shrinkage equipments computers ments 
= ay EB 20 eee | ee - — — mer mA zs] A ——] = D er. FE etre Nan Les fee re À re ss Eee A E MESES | De eie anne en) ré read e - -— 
| | | | | | | 
| | | | | | | | | | | | | | | 
] | AUSTRIA Bundesamt für Study pur- | | | | | | | | | | T. | 
eich - U. Ver- |pose | | | | | | | | | | | | There are some tests carried 
HIONSDISWOSCU por | | | | | | | | | | out by means of the ITC- 
a | | | | | | | | | | | | | |Jerie-method (see « Height 
| | | | | | | | | | | | | Adjustment by the ITC- Jerie | 
| | | | | | | | | method» by P. Waldhiusl | 
| | | | | | | | | | | | | | |Photogrammetria XVI, N° 1) | | 
— | — | — | | | | | | | | | | | | 
/ cl Ree |. | — LOL LE pe rm me EL e dem m 
2| BELGIUM [.G.M. 1: 100.00( 2 cm? v5 If | a m In : Ic: ; = | | | | | | | ; 
, X : 100.000 [15-000 £m Rc 5 film 1:40.000 [11 strips Statoscope/Katanga Ground points are|Signalized |A. 5 | Periodical- | |1 operat. | | 1 transfer| 83% hours | 1 | G. Frangois'|G. François’ |yes Mean elevation error 
) blocks | 11,5 | length 50 km only on tie strips) S. IV ly tested |1 shift |point at 25| | | | method see method | + 5-6 m 
| 3 tie strips | | every 50-60 km | | | | km from con- | | | | | Bulletin S.B.P.| 
| | | | trol points | | | | In. 48 — 1957 
| | | | | | | |«Le chemine-| 
| | | | | | | ment aerien » 
| | | | | | 
| | | | | | | 
9 9 23502 | » A s : | | | | | ; ï 
| : 20.000 2:000 xm film |Katanga Ground points are | |Every 4-5 | L:9 | | | Mean planimetric error 
* DIOCkS | on all strips every | | | | loverlaps 7or| | | | | | < 2m 
110-15 overlaps | | | | 10-12 km | | | Mean elevation error 
| | | | | | | | | | | | < 2m 
… | | | | | | | | | 
a ti |- à - 1 | de EA ef d 
G.C.B : 95.00 gC -m? C m oa 1 : : | | | Y "s m de 
[.G.C. B. 26 000 13.990 km R.C 5 lhe block is Ground points are A. 6 | | | Graphical com- | | Use of am, +5 m| 4+ 7,50m 
1 : 50. 3 blocks B.C. 5 À. for med by on tie strips: on | | | | \pensation by | Ispline for 
strips of 110- each of them there A. " | | | | |Mr. Zarzycki’s| | | graphical/m, + 2,2 m| + 3,0 m 
120 km length, are 5-6 models with | | | | |method | \interpola- 
and5tiestrips | control points | | | | | | |tion 
| | Tie strips are adjusted by Mr. | | 
| Verdin’s method. 
| Block adjustment is made by | 
| | |Mr. Moreau's method 
A ; : : ; Li d de | : ; : = 
4 | CANADA The flight and other characteristics are identical with those for strip Along the periphe- | | | |Slotted templet method and | | 
Iry of triangulated | | | | | |Jerie's method | | 
|blocks and if pos- | | | | | | | | 
sible along a central | | | | | | | 
line of the block | | | 
1 | * " Y » ) e > 2 ‘ ? a = 9 PES p cec | . : ^ . . . . . . | n 1 Alé 
10 | FRANCE [.G.N. 608.690 km S.0.M. plates 15-20 strips of Occasion- |4 horizontal points Geodetical Poivilliers Periodical- 1 operat. bz 0 Transfer 1h 45m 2 | |By stereotem- |By mechanical occasional-| see « Essais contrôlés » 
71 blocks Poivilliers 100 - 120 km ally stato- each block or astro-|IS.O.M. ly tested 1 shift Ibx constant points are |9h 30m plet |method ly used | results 
25.000 mo- length. a scope | Elevation points a-|nomical D.D. (each year) lidentified bv! |per model | | 
dels 60% - 10% | | long the periphery points | Imeans of a | | 
via L. of the block and if \stereoscope | | |See the IGN Report to Com- 
| : 10.000 1.180 km? Egypt possible some points Geometric | |mission III at Stockholm Con- 
; e : : in the middle or geode- | \gress 1956 « Méthodes de dé- 
| : 20.000 200 km* ‚France tie level- | Itermination du canevas de re- | 
> 2 x ing | | | | | | |stitution des cartes a petite | 
1 : 40.000 40.270 km? 1: 50.000 ‘Northen occasio- | | | | léchelle » | 
| | Africa nally ba- | | | | | | | | | 
L . oo 2l | rometric. | | | | | | | | 
1 : 50.000 325.770 km? | 1 : 50.000 | | | | | 
| | | 
1 : 100.000 178.370 km? ] : 75.000 | Algerie | 
|Mada ga - | | 
scar | | 
1 : 200.000 62.900 km? 1 : 75.000 Sahara