大间距相控阵天线栅瓣抑制技术研究
Study on Grating Lobe Suppression Technology of Large Spacing Phased Array Antenna
  
DOI:
中文关键词:  大间距相控阵,遗传算法,模式搜索算法,栅瓣
英文关键词:large spacing phased array, genetic algorithm, pattern search algorithm, grating lobe
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作者单位
桂文静1 邓庆勇2 林福江1 1.中国科学技术大学信息科学技术学院,合肥230031
2.合肥若森智能科技有限公司,合肥230088 
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中文摘要:
      适当增加阵元间距有利于降低相控阵天线的成本,但是会带来不期望的栅瓣。文中针对5×5 大间距相控阵天线栅瓣抑制技术进行了研究。改进了传统遗传算法,增加了种群的多样性。首先采用改进的遗传算法优化得到局部解,然后运用模式搜索算法优化得到最优解,并对阵列口径及阵元最小间距进行约束。其次,结合实际的工程应用,对阵元位置进行约束,优化出便于生产应用的最佳阵列排布。仿真结果表明,优化后的阵列,最大栅瓣电平得以有效抑制,满足工程应用的要求。
英文摘要:
      Properly increasing the spacing of the elements is conducive to reduce the cost of the phased array antenna,but the undesirable grating lobes will be produced. In this paper, the grating lobe suppression technology of 5×5 large spacing phased array antenna is studied. The traditional genetic algorithm has been improved and the diversity of the population increases. First, the improved genetic algorithm is used to optimize the local solution, then the optimal solution is obtained by using the pattern search algorithm, during this optimization, the array aperture and the minimum spacing of the array elements are constrained. Second, combining with the actual engineering application, the position of the array elements is constrained to obtain the optimal array arrangement. The simulation result shows that the optimized grating array can effectively suppress the maximum grating gate level and meet the requirements of engineering applications.
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