tracking correction (as { | me nent to the 
azimuth and elevation of t opt is a: from 
recordings. The random er: n C 
        
to lie in the ability of 
     
  
recordings. 
  
theodolite is 
  
      
of the existing s 
  
cates an 
        
    
We / cy*T cT cvm d, p $ ^^ 
The systematic OI Ll above 
    
for any dial 
theodolite it 
  
o 
of the systematic err 
  
  
The mathematical 
tablished by 
  
and a series of 
  
determined by a 
the true directions of 
  
  
all that is requir 
   
optimum distr: 
          
     
night opera Leu] S | 
at AFMTC with prov! ime c t | 
   
out to sea.