'stanbul 2004 
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coder uses 
and decode 
I-bit code. 
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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B5. Istanbul 2004 
  
valid signal duration. 
This 
check 
IS 
performed by an external RC time constant 
driven by ESt. This facility, together with 
Fig. 1. Front View 
3 
» 
i 
sd 
4 
Sal 
  
  
Fig. 2. Side View