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

After a communication satellite reaches its geosynchronous 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.