载噪比直接法测量卫星转发器G/T值的精度研究  

Research on the Accuracy of Satellite Transponder G/T Measurement Using Carrier-Noise Ratio Direct Method

作　　者：陶忆雪 刘宸 李琴琴 TAO Yixue;LIU Chen;LI Qinqin(Beijing Satellite Navigation Center,Beijing 100094,China)

机构地区：[1]北京卫星导航中心,北京100094

出　　处：《电声技术》2022年第7期108-111,共4页Audio Engineering

摘　　要：阐述利用载噪比直接法测量卫星转发器天线品质因数G/T值的原理,对测试链路进行建模分析,研究大气损耗、天线方向跟踪误差给测量精度带来的影响。最后给出利用载噪比直接法测量卫星转发器G/T值的实例,与卫星转发器的出厂测试值进行对比,结果表明二者吻合度较高。In this paper, the principle of measuring the G/T value of satellite transponder antenna by using the direct method of carrier to noise ratio is described. The modeling analysis of the test link is carried out, and the influence of atmospheric loss and antenna direction tracking error on the measurement accuracy is studied. Finally, an example of measuring G/T value of satellite transponder by using carrier noise ratio direct method is given, and the result is compared with the ex factory test value of satellite transponder. The result shows that the two methods are in good agreement.

关 键 词：卫星转发器 G/T值测量 载噪比 卫星通信 

分 类 号：TN967.1[电子电信—信号与信息处理]