Installation and Adjustment of Antenna Pedestal for 70 m Large Radio Telescope

The antenna pedestal is the key and difficult point of field installation of 70 m antenna of large radio telescope. Considering the period of field installation and the crane used, the antenna pedestal frame is assembled first, then the cross-shaped elevation truss and the elevation gear combination are assembled in parallel, and finally the overall elevation truss structure is hoisted on the antenna pedestal frame. In the assembly process, the high-precision laser tracker, electronic level, total station and other instruments are used to measure and adjust the installation indicators in real time, and finally all antenna pedestal indicators meet the design requirements. After practical use, the antenna received signal is normal, which provides valuable experience for the installation of super large antenna pedestal.