| Citation: | ZHANG Zhaojian, XIE Junwei, LI Xin, et al. Discrimination method of range deception jamming based on FDA-MIMO[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(4): 738-746. doi: 10.13700/j.bh.1001-5965.2016.0257(in Chinese)
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A range deception jamming discrimination method based on the multiple-input multiple-output (MIMO) radar with frequency diversity array (FDA) is proposed. In FDA-MIMO, the phase difference or spatial frequency between different elements of echo is dependent on both range and angle, which implies that the false targets can be discriminated and suppressed due to the mismatch in either range or angle. This paper derives the phase difference and spatial frequency formula of echo, jamming and mixed signal, analyzes the influence of up and down conversion, matched filtering, frequency shift and signal mixing in details, and introduces the entire identification process. The effectiveness of proposed method in suppressing jamming is demonstrated via theoretical analysis and computer simulations. Results show that this method can extract the phase difference and spatial frequency accurately, and discriminate false targets successfully under different scenarios.
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