Frequency Diverse Array (FDA) radar is a new radar technique proposed in recent years. FDA uses a small frequency increments across its array elements to provide a range-dependent transmit beampattern, which overcomes the disadvantages of a phased-array providing range-independent beampattern, and offers many promising advantages for radar applications. This paper introduces the concepts, principles and application characteristics of FDA radar, makes an overview of recent FDA radar literature, and discusses FDA radar promising applications, along with existing technical challenges.
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