摘要
通过对船载卫通天线跟踪接收机校相值修正模型的分析,阐述了其只能修正由极化角变化产生的相移和不能修正增益值变化的缺点。提出了校相值动态修正模型,该模型利用天线在不同地域对准固定信号源进行校相得到的校相值之差修正天线码头校相值。此算法不仅可以修正极化角变化产生的相移,而且可以修正环境变化引起的相移以及增益值的变化。采用后桅杆安装信号源的设计,以实现相位值动态修正模型。
Through an analysis on the correction model of phase calibration value of shipboard SATCOM antenna tracking receiver, the paper indicates that its defect is that only the phase shift caused by the variation of polarization angle can be corrected, while the variation of gain value cannot be corrected. The paper proposes a dynamic correction model of phase calibration value, which corrects the wharf phase calibration value of antenna through the difference between the phase correction values obtained by pointing the antenna to a fixed signal source at different places. This method can correct the phase shift not only caused by the variation of polarization angle, but also by the variation of environment, and it can also correct the variation of gain value. The design of mounting the signal source on after mast realizes the dynamic correction model of phase value.
出处
《无线电工程》
2009年第5期54-56,共3页
Radio Engineering
关键词
校相值
动态修正
船载卫通站
phase calibration value
dynamic correction
shipboard satellite communication station
