174 
CONCLUSION 
The aerospace survey materials may be effectively used 
for measurement of optical characteristics of terrain for the 
purpose of solving various practical and scientific problems. 
The necessery conditions for achievement of high accuracy of 
measurements and compatibility of measurement results obtained 
by means of difference surveying equipment at different time 
are : 
- accurate determination of photometrical parameters of 
surveying equipment and sensitometric devices; 
- creation of aerospace testing grounds provided with 
reference photometrical fields and with the means for deter 
mining photometrical parameters of the atmosphere. 
Reference 
1. Bendat J,, Pearsol A. Measurement and analysis of 
random processes. M. Mir, 1974 
2. Matiyasevich L.M. Photometrical problems being solved 
by means of space survey. J. Earth survey from space. 1980, 
No. 3 p. 51-57