无人机圆形阵列天线的测向  

Direction Finding of UAV Circular Array Antenna

作　　者：胡秀娟[1] 桑会平[2] 周志锋[3] 

机构地区：[1]上海电机学院电子信息学院,上海200240 [2]中国电子科技集团公司第54研究所,石家庄050000 [3]上海工程技术大学机械工程学院,上海201620

出　　处：《上海电机学院学报》2014年第4期199-205,共7页Journal of Shanghai Dianji University

摘　　要：给出无人机障碍探测系统的结构,并建立圆形阵列天线的探测模型。分析圆形阵列天线的固有特性,即圆形阵列在实际应用时存在固有误差,即阵元互耦、阵元位置误差、通道幅相不一致;并给出阵元互耦误差校正、已知源幅相误差校正、未知源幅相误差校正的方法及步骤,同时采用MUSIC测向方法进行仿真分析。其结果表明,提出的阵元互耦及幅相不一致的校正方法是有效的,从而提高了无人机障碍探测系统的探测精度。A unmanned aerial vehicle（UAV）barrier detection system is given,a detection model with a circular array antenna established.The characteristics of circular array antenna are analyzed.The circular array has inherent errors in practical applications such as mutual coupling,array element position error,and channel amplitude phase inconsistency.Correction methods are given for mutual coupling errors,and for the known and unknown source amplitude and phase errors.Simulation is carried out using the MUSIC estimation method.The results show that the proposed calibration method,and the mutual coupling and amplitude phase inconsistency correction are effective,and detection accuracy is improved.

关 键 词：无人机 探测系统 波达角估计 误差校正 阵元互耦 幅相不一致 

分 类 号：V279[航空宇航科学与技术—飞行器设计]