由于馈电误差的影响，相控阵天线的指向精度降低，旁瓣电平恶化，抗干扰能力下降。
Due to the effect of feeding error on antenna's radiation performances, which causes the degradation of the sidelobe level, the pointing accuracy and the anti-jamming capability of phased arrays.
试验结果表明，所提方法使天线能维持高指向精度。
Test result illustrates that the proposed method can make antenna keep high pointing precision.
对指向跟踪误差进行了分析，并采用软件和硬件两个方面进行了误差消除设计，提高了天线的跟踪速度和指向精度。
Based on analyzing the system pointing and track error, software and hardware correction measures are designed, which improve the antenna track velocity and pointing accuracy.
仿真结果表明，该方法可以有效减小天线波束指向漂移，满足卫星移动通信系统对天线波束指向精度的要求。
Simulation results show that the method can reduce the excursion of beam pointing effectively, and the requirement of beam pointing accuracy for SOTM can be satisfied.
仿真结果表明，该方法可以有效减小天线波束指向漂移，满足卫星移动通信系统对天线波束指向精度的要求。
Simulation results show that the method can reduce the excursion of beam pointing effectively, and the requirement of beam pointing accuracy for SOTM can be satisfied.
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