Measurement and Analysis of the Circuit Delay of CEI System

Abstract:

By using a four port Vector Network Analyzer (VNA), a caesium clock, a time-interval counter and a signal source to measure the delay of CEI system segmentally. Design measuring methods respectively for three segments of the circuit. When measure the delay, it is found that, delay of antenna’s amplifier output port to the input port of down converter (DC) is stable; the fluctuation of DC’s delay is less than 2ns; the cable delay’s standard deviation is stable at 0.1ns; we get a nanosecond accuracy for whole system. The methods of time delay measurement and the design of CEI system will provide a foundation and primary data for future deep space missions.

• Periodical: Applied Mechanics and Materials (Volumes 128-129)
• Pages: 611-615
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.128-129.611
• Online since: October 2011
• Authors: Ge Shi Tang, Li Li, Liang Zeng, Lue Chen, Lv Zhou
• Keywords: Connected Element Interferometer, Delay, Vector Network Analyzer

References

[1] Yu Zhijian. Space TT&C systems engineering. Beijing; National Defense Industry Press, (2008).

[2] Yu Zhijian. Deep space TT&C system. Beijing; National Defense Industry Press, (2009).

[3] Catherine L. Thornton, James S. Border. Radiometric Tracking Techniques for Deep Space Navigation. John Wiley& Sons, Inc, (2003).

DOI: 10.1002/0471728454

[4] Wang Zhitian. Wireless electronics Metrology. Beijing; Atomic Energy Press, (2002).

[5] ZAV40 Vector Network Analyzer Opertating Manual. Beijing；R&S Company. (2008).