星载稀疏相控阵天线的多目标优化设计  

Multi-objective design optimization of satellite thinned array antenna

作　　者：刘恒[1] 赵宏伟[1] 刘波[1] 

机构地区：[1]西安空间无线电技术研究所,陕西西安710100

出　　处：《电子设计工程》2016年第9期122-125,共4页Electronic Design Engineering

基　　金：国家自然科学基金(61201089);国家重点实验室基金(9140C530101130C53013)

摘　　要：针对星载相控阵天线高增益、低副瓣的设计要求,提出了对星载六边形相控阵天线进行稀疏布阵的方法。根据需求建立了星载相控阵天线高增益、低副瓣的两目标的优化模型,使用NASA-II算法对其进行多目标设计优化。为了快速计算六边形天线阵的方向图,通过在孔径中添加虚拟阵元把六边形阵列转化为可以实现二维傅里叶变换的矩形阵列,大大节省了算法优化时间。结果表明,星载稀疏相控阵天线多目标优化思路和方法在工程应用中的有效性和合理性,为设计者提供了多种可行的选择方案。Considering the design purpose of high gain, low side lobes satellite phased array antennas, a thinning process is proposed for hexagonal array. The two objective optimization modes of high gain and low side lobes of satellite antenna are set up according to the requirements. And the NASA-II is applied at this two objective design optimization. Virtual elements are added in the array for translating the hexagon to rectangle which could be convenient to calculate the array factor of hexagon by using the FFT. The simulated results show that the availability and rationality of the multi objective optimization in the satellite thinned phased array antenna, and it could offer several feasible scheme for the designer.

关 键 词：稀疏阵列 相控阵天线 FFT NASA-II算法 

分 类 号：TN959[电子电信—信号与信息处理]