Abstract

Phased arrays provide a beampattern that is independent of the range of targets. Frequency diverse array (FDA), on the other hand, yields a beampattern that is range-dependent. Due to the fact that the ambiguity function is a useful tool in the analysis of range (time-delay) and Doppler resolution performance of radar systems, this paper addresses the ambiguity function of three FDA radar receivers, with the aim of focusing the energy transmitted to the desired range-angle direction while suppressing unwanted sidelobe levels. Numerical results ascertain why the full-band, coherent FDA radar is the most suitable receiver for radar communication.

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