改进校准技术的转发器输入输出特性测试方法  

A New Measurement Method for I/O Performance of Transponder with Improved Calibration Techniques

作　　者：许国庆[1] 杨文洁[1] 陈颖[1] 

机构地区：[1]北京跟踪与通信技术研究所,北京100094

出　　处：《电讯技术》2005年第6期173-176,共4页Telecommunication Engineering

摘　　要：当卫星发射定点后,必须对在轨卫星通信有效载荷(即转发器)的性能进行测试。输入输出特性是转发器的一项重要技术指标。本文在参考国家标准和INTELSAT测试方案的基础上提出一种改进校准技术的转发器输入输出特性测试方法,详细介绍了该方法的测试原理,同时还提出一种无需精确测量卫星信道传输时延的解决收发信号同步的方法。该方法减少了误差因素,提高了测试精度,而且使在轨测试系统的校准由程序自动执行,提高了测试效率。After a communication satellite reaches its geesynchronous orbit position, it is desirable to get the in -orbit data of satellite communication payload -transponder. The I/O （input/output） performance is an important technical specification for transponder. This paper puts forward a new measurement method for testing the I/O performance of transponder with advanced calibration technique, which is referred to the national standard and test method adopted by INTELSAT. This paper introduces the principle of test method for I/O characteristic, and at the same time brings forward a method to synchronize the transmitting and receiving signal. This method decreases the number and values of error factors, improves the test accuracy and efficiency, also makes the calibration procedure be performed automatically by program.

关 键 词：通信卫星 转发器 在轨测试 输入输出特性 通信有效载荷 改进 

分 类 号：TN927[电子电信—通信与信息系统]