the same measuring and adjustment parameters (e.g. pointing precision, ac- 
curacy of geodesy, numbering scheme etc.). 
The text file which makes the system a multi-lingual system can also be con- 
sidered as a part of the data base. All outputs and interactions made by the 
system happen via this file. 
h. MEASURING SYSTEM 
The operationality is the main criterion a system of this kind should fulfil. 
The software must flexibly support all or at least nearly all the functions 
which might occur in the operator's mind during the measuring procedure. 
Further, it must be capable of taking care of all possible error situations. 
Otherwise it may happen that the computer support impedes flexible measuring 
or might even make it impossible. Thus a large amount of checking and much 
interaction are needed. As only a limited capacity minicomputer is available 
and all these operational aspects take a huge amount of the core, very little 
is left for the numeric processing itself, although the programs are very 
heavily overlaid. 
4.1 MAIN MENU OF THE MEASURING PROGRAM 
The measuring system has the following main menu: 
- Initiate project. This is needed only when initiating a new project. 
- Continue process. It makes the program continue from just the point 
where the system previously paused. 
- Continue process, but renew the inner orientation. This is applied when 
the photos were for some reason taken away from the photo stages. 
- Start new strip. This is used when activating a new strip. 
- Renew last model totally. This is needed when because of a fatal error 
situation, one wants to make all measurements of the current model again. 
- Make remeasurements. This makes it possible to remeasure or observe 
additional points for any model already in the data base. 
- Edit data base. This activates the data base editor. 
- Start block adjustment. This chains to the bundle block adjustment program. 
- Analyze results of block adjustment. This performs a search for gross 
errors after the bundle block adjustment and makes possible remeasuring 
of the erroneous points. 
4.2 MEASURING STRATEGY 
The normal measuring procedure is very straightforward. The operator ob- 
serves the block strip by strip in any order he wants by performing success- 
ive inner orientations and measurements on models, whose parameters are all 
the time being updated. After each pointing there are the following functions: 
Check on differences for points already measured. 
2* Updating of parameters of relative orientation (first model in strip) 
or triplet formation (other models). 
C ; in? ; : 
2 Updating of parameters of similarity transformation between model and 
object, if object coordinates of the observed point are known (control 
point, tie point from the previous strip or model etc.).