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Open AccessArticle

A Method to Determine BeiDou GEO/IGSO Orbital Maneuver Time Periods

1
College of Geology Engineering and Geomantic, Chang’an University, 126 Yanta Road, Xi’an 710054, China
2
School of Earth Sciences and Engineering, Hohai University, 1 Xikang Road, Nanjing 210098, China
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(12), 2675; https://doi.org/10.3390/s19122675
Received: 23 May 2019 / Revised: 10 June 2019 / Accepted: 11 June 2019 / Published: 13 June 2019
(This article belongs to the Section Remote Sensors, Control, and Telemetry)
Because there are different types of BeiDou constellations with participating geostationary orbit (GEO) and inclined geosynchronous orbit (IGSO) satellites, the maneuvering frequency of BeiDou satellites is higher than that of other navigation systems. The satellite orbital maneuvers lead to orbital parameter failure for several hours from broadcast ephemeris. Due to the missing initial orbit, the maneuvering thrust, and the period of orbital maneuvering, the orbit products of maneuvering satellites cannot be provided by the International Global Navigation Satellite System (GNSS) Service (IGS) and International GNSS Monitoring and Assessment System (iGMAS). In addition, the period of unhealthy status and the orbital parameters of maneuvering satellites in broadcast ephemeris are unreliable, making the detection of orbital maneuver periods more difficult. Here, we develop a method to detect orbital maneuver periods involving two key steps. The first step is orbit prediction of maneuvering satellites based on precise orbit products. The second step is time period detection of orbit maneuvering. The start time detection factor is calculated by backward prediction orbit and pseudo-range observations, and the end time detection factor is calculated by forward prediction orbit and pseudo-range observations. Data of stations from the Multi-GNSS Experiment (MGEX) and iGMAS were analyzed. The results show that the period of orbit maneuvering could be detected accurately for BeiDou GEO and IGSO satellites. In addition, the orbital maneuver period of other GNSS medium Earth orbit (MEO) satellites could also be determined by this method. The results of period detection for orbit maneuvering provide important reference information for precision orbit and clock offset determination during satellite maneuvers. View Full-Text
Keywords: GEO/IGSO; period detection; orbital maneuver; time periods; orbit prediction GEO/IGSO; period detection; orbital maneuver; time periods; orbit prediction
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MDPI and ACS Style

Qin, Z.; Huang, G.; Zhang, Q.; Wang, L.; Yan, X.; Kang, Y.; Wang, X.; Xie, S. A Method to Determine BeiDou GEO/IGSO Orbital Maneuver Time Periods. Sensors 2019, 19, 2675.

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