91 
Chapter V 
F) REPORT ON THE PARTICIPATION OF THE GERMAN CENTERS 
Test N. 20 
by 
Dr. Ing. W. Brucklacher and Prof. ft. Forstner 
1 — THE GERMAN SHARE IN THE TESTING WORK OF THE I.S.P. (COMM. Ill) IS A TEAM 
WORK OF 6 CENTERS 
1. Technische Hochschule München, Institut für Photogrammetrie, Topogra 
phie und Allgemeine Kartographie, Prof. Dr.-Ing. R. Finsterwalder; 
2. Technische Hochschule Stuttgart, Institut für Yermessungswesen und 
Photogrammetrie, Prof. Dr.-Ing. E. Gotthardt; 
3. Hansa Luftbild G.m.b.H., Münster, Dr.-Ing. W. Blaschke; 
4. Institut für Angewandte Geodäsie, Frankfurt/Main, Prof. Dr.-Ing. e. h. 
E. Gigas; 
5. Zeiss-Aerotopograph G.m.b.H., Oberkochen, Dr.-Ing. M. Ahrend; 
6. Deutsches Geodätisches Forschungsinstitut, München, Prof. Dr.-Ing., 
Dr.-Ing. e.h. M. Kneissl. 
Centers 1-5 were responsible for the instrumental aerotriangulation of the 3 
lateral and 8 longitudinal strips of the block. Center 6 was in charge of the calculations 
for adjustment, whereas center 4, in connection with center 5, did the preparing 
work. The directions for instrumental aerotriangulation and strip adjustment as 
well as the compilation of the results, the error calculation (intrinsic and absolute 
accuracy) have been drafted by the centers 5 and 4. 
1.1. Material. 
For evaluation the diapositives of the film negatives taken by the IGN, Paris, 
with the Zeiss Camera RMK 15/23 (max. distortion of Pleogon lens: 4 microns) were 
used: Flight altitude above ground: approx. 8 500 m, image scale approx. 1:55000, 
3 lateral and 8 longitudinal strips of an average of 16 photographs and 80 km length, 
size of the block approx. 80:80 knr. 
1.2. Method allied. 
All 11 strips have been triangulated according to the method of conjunction of 
successive photographs in the Stereoplanigraph C 8. For the 3 lateral strips the IGN, 
Paris, placed the coordinates x, y, z of a total of 33 control joints arranged at the be