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At present, a large quantity of Programs both for 
the &nalytical and analog-ana lytical methods are already 
available. 
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In order to make easier utilization of these programs, 
their main characteristics and initial data are being 
standardized. Complete sets of programs have been com- 
piled, destined for checking initial data and quality of 
the processes of plotting, computation of corrections 
for systematic errors, etc. 
Plotting and adjustment of a spatial photogram- 
metric network are mainly carried out by treating sepa- 
rate strips. Block phototriangulation is also being more 
widely used. 
Strip networks are plotted as independent and (or)semi- 
  
-independent models. According to the independent-models 
method, each model is plotted in its own coordinate 
System, the direction of the base being considered as 
coinciding with the X-X axis, and assuming that the 
principal base plane of ihe left ray-bundle represent 
the X-Z plane of this system. Mutual (relative) orienta- 
ion elements are determined by iteration from the 
measured coordinates of 12-18 points located in zones 
near those standard. 
Comparing the common points coordinates of adjacent 
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models, it is possible to reduce the co e of a 
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next model to those of the preceding 
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orientation and adjustment of a strip model are accomp- 
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lished under utilization of exterior orientation ele- 
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ments obtained during the flight (statoscope,co 
tes of the projection centres) and of corresponding 
polynoms, taking into account the spatial coordinates 
of common points obtained from an adjacent strip. 
According to the semi-independent method, plotting 
of a 
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a 
ing 
rle-strip network is executed in a similar way, 
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epting that each next-following model is plotted in 
the coordinate system of the initial model,i.e.exterior 
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