Advances on Frequency Diverse Array Radar and Its Applications
Wang Wenqin①* Chen Hui① Zheng Zhi① Zhang Shunsheng②
①(School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China) ②(Institute of Electronic Science and Technology, University of Electronic Science and Technology of China, Chengdu 611731, China)
Abstract Unlike the conventional phased array that provides only angle-dependent transmit beampattern, Frequency Diverse Array (FDA) employs a small frequency increment across its array elements to produce automatic beam scanning without requiring phase shifters or mechanical steering. FDA can produce both range-dependent and time-variant transmit beampatterns, which overcomes the disadvantages of conventional phased arrays that produce only angle-dependent beampattern. Thus, FDA has many promising applications. Based on a previous study conducted by the author, "Frequency Diverse Array Radar:Concept, Principle and Application" (Journal of Electronics & Information Technology, 2016, 38(4):1000-1011), the current study introduces basic FDA radar concepts, principles, and application characteristics and reviews recent advances on FDA radar and its applications. In addition, several new promising applications of FDA technology are discussed, such as radar electronic warfare and radar-communications, as well as open technical challenges such as beampattern variance, effective receiver design, adaptive signal detection and estimation, and the implementation of practical FDA radar demos.
2018, Vol. 7 
