船载卫通站天线座架型式的分析

Analysis of antenna structure in the shipboard satellite communications system

分析了在船载卫通站伺服跟踪系统中采用A-E两轴座架型式和采用A-E-C三轴座架型式各自的优缺点。详细介绍了采用A-E两轴座架型式跟踪移动目标时产生正割补偿和跟踪盲区的原因以及解决正割补偿的办法。通过对船载A-E-C三轴座架船体运动的分解、坐标转换,指出了A-E-C三轴座架和A-E两轴座架型式的对应关系以及其之所以解决跟踪盲区的原理。

It analyzed the advantage and disadvantage of antenna structure comparing A-E two axis with A-E-C three axis in shipboard satellite communications system,and introduced the reason of ＂Secant Compensation＂ and ＂tracking blind district＂ and the solution of ＂Secant Compensation＂ in detail.By resolving the ship motion and analyzing coordinates translation,it put forward the relation of antenna structure comparing A-E two axis with A-E-C three axis and the reason why A-E-C three axis can solve ＂tracking blind district＂.