Journal
SIGNAL PROCESSING
Volume 144, Issue -, Pages 99-103Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.sigpro.2017.10.008
Keywords
Frequency diverse array; MIMO radar; Parameter estimation; Waveform design; Sparsity
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Funding
- Natural Science Foundation of China [61601178]
- China Postdoctoral Science Foundation [2016M600729]
- Shenzhen Science and Technology Program [JCYJ20150630145302222]
- Doctoral Starting up Foundation of Hubei University of Technology [BSQD14032]
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Frequency diverse array (FDA) can produce a range-angle-dependent beampattern due to the employment of a small frequency increment across the array elements. By utilizing this characteristic, this letter devises an FDA and multiple-input multiple-output hybrid radar to jointly estimate the ranges and angles of multiple targets via optimal transmit beamspace design. A uniform elemental power constraint is adopted as the optimization criterion is to minimize the mutual coherence of the sensing matrix using a sparse model and to achieve high-resolution estimation in both range and angle dimensions. A cyclic optimization approach based on power method-like is further developed to solve the non-convex design problem. The excellent performance of the proposed approach is demonstrated via computer simulations. (C) 2017 Published by Elsevier B.V.
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