大孔径全可动射电望远镜换馈系统设计

杨凤辉,汪敏,董亮,施硕彪

Design of feed switching system for large aperture fully movable radio telescope

Fenghui YANG,Min WANG,Liang DONG,Shuobiao SHI

表4 换馈系统引起的不同频段下的天线指向精度

Table 4 Antenna pointing accuracy in different frequency bands caused by feed switching system

频段 加工、装配误差/mm 推杆运动、伺服控制误差/mm 天线z向变形/mm 指向精度/（″） S/X 0.70 0.64 1.63 5.36 C 3.01 8.01 Ku 1.41 4.97