地面站卫通抗干扰辅助阵列馈源天线研究

Research on Ground Station Satellite Communication Anti-interference Auxiliary Array Feed Antenna

卫星通信信号弱,其下行链路易受到地面大功率电子设备干扰。论文依据波束形成原理和卫星通信地面站工作场景,提出了最优辅助天线增益分析方法。针对基于卡塞格伦环焦双反射面天线的卫星通信地面站,为实现主瓣抗干扰性能,提出了7单元阵列馈源的设计方案。仿真结果表明,当干扰偏离主波束1°时,可实现33dB的对消比,信噪比损失小于1.5dB。论文研究可为卫星通信地面站主瓣抗干扰的理论分析和工程实现提供参考。

The satellite communication signal is weak,and its downlink is vulnerable to interference from earth high-power electronic equipment.Based on the principle of beam forming and the working scenario of satellite communication earth station,this paper proposes an optimal auxiliary antenna gain analysis method.For the satellite communication earth station based on Cassegrain ring focus dual reflector antenna,a 7-element array feed design scheme is proposed to achieve the main lobe anti-interference per-formance.The simulation results show that when the interference deviates from the main beam by 1°,the cancellation ratio of 33dB can be achieved,and the SNR loss is less than 1.5dB.The research in this paper can provide reference for the theoretical analysis and engineering implementation of the main lobe anti-interference of satellite communication earth stations.