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A Summary of DABS Antenna Studies.
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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A DABS antenna is characterized by the simultaneous availability of three beams -- 1 A sum beam Sigma through which all data is transferred. -- 2 A monopulse difference beam Delta used for target direction finding. -- 3 A control beam Omega. Its function is to guarantee that all transactions occur in the main beam. Whereas the desirable azimuth characteristics arise from the basic required functions and from the necessary to minimize the effects of the FR target environment, the desirable elevation features are such as to reduce the effects of the physical envronment. Implementation options are very sensitive to the type if any of primary radar with which it is to be collocated. Author
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