136 
But the main advantage of multispectral survey 
is the fact that black-and-white spectral images 
allow to make precise photometric measurements of 
the ground objects which are the basis for a 
development of quantitative , visual —instrumental and 
hardware interpretat ion methods. We think that in 
the future these particular directions of 
mu1tispectra1 space photosurvey data application will 
play the most important roles. 
The experience of application of multispectral 
□hotodata confirmed the significant increase of the 
problems which can be solved by remote sensing data 
and a raise of the efficiency of these data 
application for natural resources study and 
ecological investigations. 
Mu1tispectra1 photocamera MKF—6 (MKF—6M, MKF—6MA), 
developed by "Carl Zeiss Jena” company from German 
Democratic Republic and installed on manned orbital 
station,allowed not only to elaborate the methods and 
facilities for multispectral photodata processing, and to 
solve a set of many scientific and production tasks but to 
move long ahead in raising the efficiency of multispectral 
survey, as the results of its use allowed to substantiate 
technical specifications of MK-4 camera. 
The present report presents main specifications 
of new Soviet multispectral photocamera MK—4 and 
compares it to the MKF—6 camera. The samples of MK—4 
photoimages are shown. 
MK—4 camera is installed on unmanned space vehicle of 
"RESOURCE—F“ type and allow for a survey at the scale of 1: 
660 000 to 1:1 500 000 in dependence of the selected orbit 
altitude with angle of its declination to the equator plane 
of 82 deg. 
MK-4 system consists of multispectral 
photocamera CA—M with four objectives and of star 
monochannel photocamera CA—3P designed for 
determination of elements of exterior orientation of 
the ground surface images.