The Multiple Access Interference Simulation on PRN-Based Two-Way Satellite Time Transfer

Yi-Jiun Huang, Wen-Hung Tseng, Shinn-Yan Lin, Huang-Tien Lin, Fang-Dar Chu, and Chia-Shu Liao

Abstract:	To perform two-way satellite time transfer (TWSTT), participants use pseudo-random noise (PRN) coded signals to measure the propagation delay from the other site and exchange their measurements. When all participants transmit their PRNs at the same time, multiple access interference (MAI) will exists. The MAI may cause the error in delay measurements, and may even cause the diurnal effect when a geo-stationary satellite is in motion. We conduct numerical simulations to investigate the relation between ground station parameters and the diurnal effect. Our simulation results show that the diurnal effect is related to the PRN carrier frequency offset and chip rate. It is also related to the signal bandwidth and the difference of MAI power. We also find the possibility of diurnal effects is code-dependent and baseline-dependent.
Published in:	Proceedings of the 43rd Annual Precise Time and Time Interval Systems and Applications Meeting November 14 - 17, 2011 Hyatt Regency Long Beach Long Beach, California
Pages:	283 - 292
Cite this article:	Huang, Yi-Jiun, Tseng, Wen-Hung, Lin, Shinn-Yan, Lin, Huang-Tien, Chu, Fang-Dar, Liao, Chia-Shu, "The Multiple Access Interference Simulation on PRN-Based Two-Way Satellite Time Transfer," Proceedings of the 43rd Annual Precise Time and Time Interval Systems and Applications Meeting, Long Beach, California, November 2011, pp. 283-292.
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