Systems Engineering and Electronics ›› 2018, Vol. 40 ›› Issue (1): 73-79.doi: 10.3969/j.issn.1001-506X.2018.01.11

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OFDM MIMO radar waveform design with range sidelobe suppression

BAI Ting, REN Xiukun, ZHENG Na’e   

  1. School of Navigation and Aerospace Target Engineering, Information Engineering University, Zhengzhou 450001, China
  • Online:2018-01-08 Published:2018-01-08

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Abstract:

Radar systems suffer from raised range sidelobe near the mainlobe in distinguishing adjacent targets, leading to deteriorated detection performance of weak targets and echoes aliasing. To solve this problem, a novel orthogonal frequency division multiplexing (OFDM) multiple input multiple output (MIMO) radar waveform design method with low range sidelobe near the mainlobe is proposed. First, a bunch of phase coded modulated OFDM waveform is constructed. On this basis, the min-max algorithm and the integrated sidelobe level are utilized to establish the objective function, and constant modulus is the constraint. Then, the optimization problem is transformed into an unconstrained optimization problem based on the relationship between the transmitted waveform and the phase, which is solved by the Broyden-Fletcher-Goldfarb-Shanno algorithm. Simulation results show that the proposed method has remarkable performance in sidelobe suppression and low computational complexity.

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