Research on precise measurement methods of time delay for frequency conversion system
The paper implement the research on the precise measurement methods of time delay for frequency conversion system,complete to design and establish the two measurement system,which are the four-ports network analyzer and modulation-demodulation methods.Then we carry out a lots of tests depending on different types of system.Therefore,in order to validate the feasibility and accuracy,we use two methods to measure the delay of the Connected Element Interferometry(CEI)system,which builded by Science and Technology on Aerospace Flight Dynamics Laboratory of Beijing Aerospace Control Center.On the other hand,we use the track orbit of Sinosat 6 to analysis the result,Farther put up the value of time delay on data processing in VLBI,and then lay the foundation for the device delay future deep space exploration mission in high precision calibration.Furthermore the research work not only accumulate the test datas and skills,but also can be used the correction data on many vital missions,for example in VLBI data processing,orbit calculation,radar testing and satellite signal capture,which have higher application value and military benefits.
precise measurement methods frequency conversion system the Connected Element Interferometry(CEI) system data processing in VLBI
Zeng Liang Cao Yun Xu Wei Zhang Xiyang Wang Xiaohan
Beijing Aerospace Control Center,Beijing 100094,China
国际会议
The Fifth International Symposium on Test Automation & Instrumentation(2014第五届国际测试自动化与仪器仪表学术会议)
北京
英文
375-380
2014-09-23（万方平台首次上网日期，不代表论文的发表时间）