摘要
测量船在广阔海域执行远洋航天试验任务,其船载卫通站必须适应多种极化方式的通信卫星。简要介绍了卫星通信极化的基本概念,对测量船天线馈源网络和跟踪接收机工作原理以及A/B极化转换的机理进行了描述,分析了天线跟踪系统相位变化的原因及关键问题,给出了海上动态A/B极化转换的方法,尤其是对海上动态校相的操作过程进行了较为详细的描述,最后举证了实际应用情况。
Ship-borne satellite communications station should be able to switch the modes of polarization during maritime missions. The fundamental concepts about satellite polarization are introduced, the operation principles of antenna feed network and tracking receiver presented, and the mechanism of polarization A/B conversion described. Also, the factors that induce phase change of tracking receiver are concluded. Finally, the method of polarization A/B conversion of ship-borne satellite communications station during marine voyage proved by applications is proposed. The method of phase calibration for tracking receiver is particularly described.
出处
《无线电工程》
2009年第9期33-36,共4页
Radio Engineering
关键词
船载卫通站
海上环境
A/B极化转换
校相
ship-borne satellite station
marine environment
polarization A/B conversion
phase calibration
