Using the reference image for the restoration of radio image, distorted 
        by optical system 
        
        
        A. Yu. Zrazhevskiy, V. A. Korotkov
        
        Kotel’nikov Institute of Radio 
        Engineering and Electronics of Russian Academy of Sciences, Fryazino 
        branch
 
        
Received 
April 9, 2013 
        
         
Abstract. The 
possibility of using the reference image 
for the restoration of radio image, distorted 
by optical system, is considered.  It is shown that the efficiency of the 
method is determined by its ability to isolate the spectral region containing 
the origin of any noise.
Key words: radio-wave imaging,
millimeter-wave instrument function, radiothermal image, image recovery, backup
image.