Abstract:Due to the problem of pattern synthesis of the antenna array with targets lying in the near-field, a near-field pattern synthesis algorithm based on SPS-JADE algorithm is proposed. In this paper, based on the derivation and analysis of delay expression and pattern model of near-field pattern, with the element positions of linear non-uniform antenna array being the optimization variables and attaining beam focusing and sidelobe suppression being the optimization objective, the pattern synthesis in the near-field is transformed as an optimization problem. And an improved intelligent optimization algorithm, SPS-JADE algorithm is used to solve the problem and improve the optimization performance of pattern synthesis. The simulation experiments compared with other intelligent optimization algorithms are carried out, with the SPS-JADE algorithm performs, the average normalized maximum sidelobe level is lower than -22.1dB and -9.3dB in the angle and range dimension patterns, respectively, and the beam focusing is realized successfully, these results are superior to the other algorithms, which show that the algorithm has better near-field pattern synthesis ability than traditional methods. Keywords: antenna array; near-field; different evolution algorithm; sidelobe suppression