不同评价函数下阵列天线自修复分析

由大量阵元组成的阵列天线其性能受不断出现的失效阵元影响，可通过进化重配置阵列中剩余正常阵元激励实现性能修复。分析了阵列天线进化重配置过程，综合分析了自修复过程中评价函数类型，设计了不同评价函数分析流程，通过Chebyshev直线阵的自修复仿真实验，分析了不同评价函数对阵列天线自修复结果的影响，分析结果表明，基于性能参数的评价函数和方向图匹配与性能参数相结合评价函数具有较好性能，该分析结果为具有失效阵元的阵列天线自修复中评价函数选择提供了参考。

Analysis on array antenna self-repair based on different fitness functions

The performance of array antenna with a large number of elements is affected by the emerging failure elements, and the performance restoration can be achieved by the evolution of the remaining normal elements through evolutionary reconfiguration. The array antennas' evolutionary reconfiguration is analyzed. The fitness function types in self-repair process are analyzed. The evaluation process of different fitness functions is designed. Through the self-repair simulation experiment of a Chebyshev linear array, the self-repair results of array antennas with different fitness functions are analyzed. The analysis result shows that the fitness function based on performance parameters and the combination of pattern matching and performance parameters have better performance. The analysis result provides a reference for the fitness function selection in array antenna self-repair.