Elliptical frequency diverse array radars: uniform and non-uniform frequency offsets
2017
ABSTRACTIn this paper a new configuration of Frequency Diverse Array (FDA) i.e. Elliptical Frequency Diverse Array (EFDA) has been proposed. The foresaid geometry has been analyzed with a uniform and non-uniform frequency offset. Analysis reveals highly range selective beampatterns with decreasing average side lobe levels (SLL). The paper further investigates tangent hyperbolic function for non-uniform frequency offset scheme in EFDA. Investigation reveals a 3D single maximum beampattern. Furthermore by utilizing the properties of tangent hyperbolic function, a highly configurable type array system is achieved, where beampatterns of three different configurations of FDA can be generated, by just adjusting a single function parameter.
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