Abstract
Measurement of GEO satellite orbit by using passively Connected Element Interferometry (CEI) has obvious advantages in measurement accuracy and optimization of satellite resource utilization, etc. In this paper, the downlink signal of TV satellite was received and recorded by using the CEI measurement system. Clear interference fringes were obtained by processing downlink signals. The results showed that the RMS of phase fluctuation is less than 2° at night. In the daytime, the RMS of phase fluctuation increases significantly. After using calibration of signals, the RMS of the phase fluctuation during the day is significantly reduced to the same level as the nighttime. It is indicated that the phase fluctuation is caused by the variation of the temperature during the day, especially the direct sunlight. It also highlighted the necessity of signal calibration. Phase delay was compared with the precise-ephemeris-based delay, and the systematic error was analyzed. Our work lay a foundation for future GEO satellite precise orbit determination with the passively connected element interferometry.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call