equipment during flight, the values of the readings adjusted to photogrammetric measurements 
or, finally, the data related to the design of an independent photogrammetric network. 
Aerial survey scales are first computed for each process of those mentioned above and 
one or more scales are then selected automatically, depending on the requirements imposed on 
the accuracy and contents of the map, in a range from the smallest to that equal to the map scale 
at an interval of 0,85 from the aerial survey scale. 
Among the parameters handled by the computer are the determination of the number of 
basic and control strips, the number of aerial photographs and their overlap value. When 
computing aerial survey cost, extra expenditure due to the complexity of the area photographed, 
the availability of the auxiliary aerial camera, the use of colour film.and so on should be taken 
into consideration. 
The amount of geodetic control and the number of markers are computed using the length 
of the photogrammetric network and the layout of the reference points. 
Labour and money expenditure is first computed with respect to every separate process 
and summation is then performed within each version. Money expenditure must involve all extra 
outlays such as capital, production, organizational, related to materials, etc. 
The program comprising more than 10 000 instructions is written in ALGOL-60 language 
and is transformed with the help of the alpha-translator into computer logic on punched cards ; 
in its working condition, the program is available into magnetic tape. 
To help perform computer calculations, the following source data are used : 
1. Technical specification : aerial survey scale, contour interval, allowances for the accuracy 
of determination of coordinates and heights of points, optimization criteria. 
2. Nature characteristics : type of terrain (plain, mountainous), mean height of the stand, 
duration of aerial survey and field periods. 
3. Aerial and geodetic survey areas : number of areas, length and width of each area, 
number and size of trapeziums measured. 
4. Aerial survey means and conditions : type of aerial camera (focal length, frame size) and 
its specific application (photogrammetric control, relief survey, interpretation, production of 
photoplans) type of aerial film (black-and-white colour, multispectral), running of strips (square, 
control), use of airborne radio measurements. 
5. Data on planned methods of field work : typical layout of survey control, methods for 
determining geodetic coordinates and heights (intersections, running) of points and markers. 
6. Planned methods of office work : photogrammetric control (analytical, analog), compilation 
of manuscript (graphical, digit), preparation for issue (scribing, drawing). 
7. Economic data : planned processes and rating of difficulties associated therewith ; type of 
transport means used, coefficients, etc... 
Data is represented in basic or matrix form and conditions planned are designated by 
their corresponding codes. Output data to be printed and involved in the project is as follows: 
- summary estimate of the expenditure according to the optimum version of the project ; 
- aerial survey parameters ; 
- optimum criteria concerned with all the versions of the project. 
The results of computer-oriented planning of stereophotogrammetric survey show that 
planning time is reduced several times and the selected version of the survey project is 
considered an optimum one. 
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