基于阵列天线的干涉仪寻优技术

Interferometer Lineup Finding Based on Array Antenna

在一套系统中通过共用天线孔径和接收通道同时实现相位干涉仪和DBF多波束比幅,可以获得宽空域覆盖、高天线增益,同时还兼顾了远区、近区信号和宽带窄带的工作需求,但DBF多波束比幅体制的天线单元较多,传统的基线寻优法耗时耗力。针对这一问题,提出了基于DBF阵列天线的干涉仪仿真模型,给出了四元干涉仪解模糊方法下的天线寻优算法,并仿真验证了算法的正确性及其快速收敛性。仿真结果表明,在保证解模糊率的情况下,所提算法寻优所需次数大幅降低至原有次数十分之一以下,对提高系统应用效能具有积极的指导意义。

The implementation of phase interferometer and digital beam forming（ DBF） multi beam amplitude through the antenna aperture and the receiving channel in a system,can obtain a wide spatial coverage and high antenna gain,while also taking into account the distance zone signal and narrow band work demand,but the DBF multi beam amplitude comparison system of antenna units are more traditional in baseline optimization method is time-consuming. To solve this problem,a simulation model of interferometer based on DBF array antenna is presented,and an antenna optimization algorithm based on four element interferometer is presented. And the correctness of the method and the algorithm convergence is proved by the simulation results show that the probability of success in the fuzzy case,optimizing the number required to significantly reduce the number of the original 1/10,the proposed method is to improve system performance value.