70 THE DEVELOPMENT OF WEAPONS SYSTEM REQUIREMENTS 



2-11 AEW SYSTEM LOGIC AND FIXED ELEMENTS 



A hypothetical AEW system that represents a possible answer to the 

 air defense problem being considered is shown in Figs. 2-15 and 2-16. 



AEW Position 

 Line 



Fig. 2-15 AEW Operation Illustrating Azimuth Location and Height-Finding 

 Means and AEW Aircraft Relations to Fleet Center. 



Two interrelated airborne radars are employed in each AEW aircraft: 

 (1) a fan beam which is rotated through 360°, and (2) a pencil beam which 

 is nodded up and down past the target to measure height. 



GIG 

 Computer, 

 Data Store 

 and Fighter 

 Direction 

 Center 



Fighter 

 Direction 

 Commun. 

 System 



Target 

 Position 

 Target 

 Velocity 

 Target 

 Heading 



Tactical 

 Display 



and 

 Decision 



Tactical Doctrine 



Fig. 2-16 Early Warning and Vectoring System Information Flow. 



