线极化状态下接收机相位补偿分析

Analysis of Phase Compensation of Tracking Receiver with Linear Polarization

船载卫通站在跟踪线极化星时,跟踪接收机相位出现随地理位置变化而变化的现象,影响跟踪性能。本文结合实际工作经验,利用电磁场理论,以平面极化波正交分解为切入点,讨论了线极化状态下和/差信号相位,对线极化状态下跟踪接收机相位补偿原理进行了初步分析,得出接收机相位补偿值为极化角变化量的结论。

The phase of tracking receiver will change with the change of geographical position when a ship-borne SATCOM communicates through a linear polarization satellite and this affects the tracking capability of the tracking receiver.Starting from orthogonal decomposition of plane polarization,the initial phase of sum and difference signal is discussed and the mechanism of phase compensation of tracking receiver with linear polarization is analyzed based on electromagnetic theories and experience.The conclusion is that the phase compensation of tracking receiver is equal to the negative polarization angle change of beaconing.