Overview of frequency diverse array in radar and navigation applications

Wen-Qin Wang

Overview of frequency diverse array in radar and navigation applications

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Author(s): Wen-Qin Wang ¹
- Affiliations: 1: School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu, People's Republic of China
Source: Volume 10, Issue 6, July 2016, p. 1001 – 1012
DOI: 10.1049/iet-rsn.2015.0464 , Print ISSN 1751-8784, Online ISSN 1751-8792

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Received 30/08/2015, Accepted 25/10/2015, Revised 19/10/2015, Published 01/07/2016

Different from phased array providing only angle-dependent transmit beampattern, frequency diverse array (FDA) employs a small frequency increment across its array elements to provide range–angle-dependent transmit beampattern. This enables the array beam to scan without the need of phase shifters or mechanical steering. Since FDA has received much attention in antenna and radar signal processing societies, it is necessary to make an overview on this interesting topic. This study introduces what FDA is and why it could be exploited for radar and navigation applications from a top-level system description and appeal to the radar signal processing and system engineering communities for more investigations on this promising array technique. The status of FDA studies is overviewed and the most recent advances of FDA radar are discussed. The basic FDA system architectures are introduced, along with performance compared to a conventional phased-array. Next, guidelines for choosing good system parameters and typical implementation schemes are provided. Finally, potential applications in range and angle estimation of targets, cognitive FDA radar and low probability of identification FDA radar are discussed, along with several technical challenges.

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Overview of frequency diverse array in radar and navigation applications

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