3 m法电波暗室测量平台及其应用

Construction of a 3-m radio anechoic chamber measurementplatform and its practical application

围绕奇台110 m射电望远镜电磁兼容测量及电磁防护设计需求,建构了3 m法电波暗室测量平台,为大型射电望远镜电磁兼容性设计及其性能测量验证提供重要的数据支撑和技术支持.首先,阐述了3 m法电波暗室测量平台的组成、测量系统及相关设备性能参数、测量系统链路配置、测量方法等,具备屏蔽效能测试、辐射发射测量和辐射抗扰度测量能力,并分析了采用GJB 151B和GB/T 9254标准开展辐射发射测量结果的差异性.在此基础上,给出了该测量平台的实际应用考虑及应用实例,为国内大型射电望远镜电磁兼容设计提供重要技术支撑.

With a focus on the requirements of electromagnetic compatibility measurement and electromagnetic protection designof the Qitai 110-m radio telescope, herein, we constructed a 3-m radio anechoic chamber measurement platform, whichprovided essential data and technical support for electromagnetic compatibility design and measurement-basedperformance verification of the large radio telescope. First, we elaborated on the composition of the constructedmeasurement platform, related equipment performance parameters, the configuration links of the components, and theinvolved measurement methods, which could be used to perform shielding effectiveness, radiation emission, andradiation susceptibility measurements. Subsequently, we analyzed the differences between the testing results of twomeasurement standards (GJB 151B and GB/T 9254). Based on the obtained results, we outlined practical applicationconsiderations and application examples of the measurement platform, providing important technical support for theelectromagnetic compatibility design of large radio telescopes.