介绍一种大型天线表面精度实时检测仪 ,它可以检测出天线表面形变的位置和大小 ,通过实时调整天线面板 ,从而大大改善大型反射面天线的系统性能。在 2 2 GHz频段 ,使用强水脉泽源 Orion,对紫金山天文台的 1 3.7m毫米波望远镜进行了实测 ,检测结果与经典的经纬仪带尺方法测量所得的结果基本相符 ,测试精度约为 0 .1 6mm。 This paper introduces a large-scale antenna surface accuracy real-time detector which can detect the position and size of the antenna surface deformation and greatly improve the system performance of the large reflector antenna by adjusting the antenna panel in real time. In the 22 GHz frequency band, Orion, a strong source of water masers, was used to measure the 13.7mm millimeter-wave telescope at the Purple Mountain Observatory. The test results are in good agreement with those obtained by the classical theodolite tape method. The test accuracy is about 0 .1 6mm.