一种导航卫星EIRP及其稳定性自动化测试方法  

An Automatic Test Method of EIRP and Its Stability for Navigation Satellite

作　　者：李光[1,2] 沈冠浩 龚文斌 任前义[1,2] 沈苑 LI Guang;SHEN Guanhao;GONG Wenbin;REN Qianyi;SHEN Yuan(Shanghai Engineering Center for Microsatellites,Shanghai 201203,China;Innovation Academy for Microsatellites,Chinese Academy of Sciences,Shanghai 201203,China)

机构地区：[1]上海微小卫星工程中心,上海201203 [2]中国科学院微小卫星创新研究院,上海201203

出　　处：《无线电工程》2021年第4期297-301,共5页Radio Engineering

基　　金：国家部委基金资助项目。

摘　　要：传统的等效全向辐射功率(Equivalent Isotropically Radiated Power,EIRP)测量方式存在人工操作耗时长、有安全隐患、无法进行长时间连续测试等问题,无法适应导航卫星的EIRP测量需求。根据导航卫星下行信号通道多、EIRP稳定度要求高的特点,设计了导航卫星EIRP自动化测试系统。利用程控矩阵开关实现测量通道的程控选择性接入,利用频谱仪和测试及控制软件进行EIRP的自动测量、超差告警、自动记录,实现了导航卫星EIRP的快速、准确、连续测量。系统已成功应用于北斗三号系统导航卫星在地面各测试阶段的EIRP测量,大幅提高了测试效率,节约了测试时间,对于具有多通道功率测量需求的系统有很好的借鉴意义。The traditional EIRP measurement method has some problems,such as long time-consuming manual operation,potential safety hazard,unable to carry out long-term continuous test and so on.According to the characteristics of navigation satellite with multiple downlink signal channels and high requirements for EIRP stability,a navigation satellite EIRP automatic test system is designed.The system uses the program-controlled matrix switch to realize the program-controlled selective access of the measurement channel;uses the spectrum analyzer and test and control software to realize the automatic measurement,out of tolerance alarm and automatic recording of the EIRP;and realizes the rapid,accurate and continuous measurement of the navigation satellite EIRP.The system has been successfully applied to the EIRP measurement of Beidou-3 navigation satellite in various test stages on the ground,which greatly improves the test efficiency of the project,saves the test time,and has great reference significance for other systems with multi-channel power measurement requirements.

关 键 词：导航卫星 等效全向辐射功率 稳定度 程控矩阵开关 自动化测试 

分 类 号：V1[航空宇航科学与技术—人机与环境工程]