Application Research of IGS Products in GPS Real-time Positioning and Timing

Ran Yan, Jianfeng Wu, Yonghui Hu

Abstract: With the continuous enrichment of IGS products and the rapid development of network technology, GPS real-time positioning and timing technology based on IGS products is a hotspot in the GNSS field. In this paper, the method of GPS pseudo-code positioning and timing is introduced, and a GPS pseudo-code positioning and timing simulation platform is established. By obtaining IGS products through network, the pseudo-code positioning and timing of the products based on broadcast ephemeris, IGF(IGS final product), IGR(IGS rapid product) and IGU(IGS ultra-rapid product) are simulated. The simulation results show that the positioning error of broadcast ephemeris is less than 15m and the timing accuracy is less than 30ns. The positioning error of IGF, IGR and IGU is less than 5m and the timing accuracy is less than 10ns. For the pseudo-code ranging positioning and timing receiver, the IGU precision ephemeris can be obtained through the network, and the positioning error and timing accuracy can be significantly improved on the premise that the network is not interrupted. Compared with the broadcast ephemeris, the accuracy can be improved by 67%.
Published in: Proceedings of the ION 2019 Pacific PNT Meeting
April 8 - 11, 2019
Hilton Waikiki Beach
Honolulu, Hawaii
Pages: 1045 - 1054
Cite this article: Yan, Ran, Wu, Jianfeng, Hu, Yonghui, "Application Research of IGS Products in GPS Real-time Positioning and Timing," Proceedings of the ION 2019 Pacific PNT Meeting, Honolulu, Hawaii, April 2019, pp. 1045-1054.
https://doi.org/10.33012/2019.16854
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