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“动中通”系统可以通过接收并比较卫星下传的信标信号强度来调整天线波束指向,从而实现对卫星的跟踪。文中针对多板天线“动中通”系统由于通信内容和信标信号间的频率差异造成的跟踪波束和通信波束指向偏差问题,分析了跟踪波束指向偏差产生的基本原理,提出了一种基于延时线加两级移相器相位补偿技术的误差修正方案,并通过理论推导和Matlab仿真,证实了方案的可行性和有效性。
“Moving through ” system can adjust the antenna beam direction by receiving and comparing the beacon signal strength transmitted by the satellite, so as to realize the satellite tracking. In this paper, the tracking beam and communication beam pointing deviation caused by the frequency difference between communication content and beacon signal are analyzed in this paper. The basic principle of tracking beam pointing deviation is analyzed. The error correction scheme of the phase compensation technology of the delay line and the two-stage phase shifter is demonstrated. The theoretical derivation and Matlab simulation prove the feasibility and effectiveness of the scheme.