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they provide; the basic means by which intelligence is carried on and 

 extracted from microwave radiations. 



In addition, we have emphasized the role of the radar as a device in- 

 timately connected with other devices to form an overall system. The 

 requirements for the radar must be derived from a logical study of the per- 

 formance of the complete weapons system in its expected tactical condi- 

 tions of operation. A knowledge of broad weapons system modeling tech- 

 niques, technical competence in the diverse aircraft and guided missiles 

 arts, and a capacity for logical reasoning are required for this process in 

 addition to a detailed knowledge of radar systems. 



The next chapter will demonstrate how the systems approach is applied 

 to typical examples of airborne radar system design. Succeeding chapters 

 will cover the detailed problems of radar design and their relationship to 

 the system problem. 



