PMID- 29186058
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180222
LR  - 20181113
IS  - 1424-8220 (Electronic)
IS  - 1424-8220 (Linking)
VI  - 17
IP  - 12
DP  - 2017 Nov 29
TI  - A Real-Time Robust Method to Detect BeiDou GEO/IGSO Orbital Maneuvers.
LID - 10.3390/s17122761 [doi]
LID - 2761
AB  - The frequent maneuvering of BeiDou Geostationary Orbit (GEO) and Inclined 
      Geosynchronous Orbit (IGSO) satellites affects the availability of real-time 
      orbit, and decreases the accuracy and performance of positioning, navigation and 
      time (PNT) services. BeiDou satellite maneuver information cannot be obtained by 
      common users. BeiDou broadcast ephemeris is the only indicator of the health 
      status of satellites, which are broadcast on an hourly basis, easily leading to 
      ineffective observations. Sometimes, identification errors of satellite abnormity 
      also appear in the broadcast ephemeris. This study presents a real-time robust 
      detection method for a satellite orbital maneuver with high frequency and high 
      reliability. By using the broadcast ephemeris and pseudo-range observations, the 
      time discrimination factor and the satellite identification factor were defined 
      and used for the real-time detection of start time and the pseudo-random noise 
      code (PRN) of satellites was used for orbital maneuvers. Data from a Multi-GNSS 
      Experiment (MGEX) was collected and analyzed. The results show that the start 
      time and the PRN of the satellite orbital maneuver could be detected accurately 
      in real time. In addition, abnormal start times and satellite abnormities caused 
      by non-maneuver factors also could be detected using the proposed method. The new 
      method not only improves the utilization of observations for users with the data 
      effective for about 92 min, but also promotes the reliability of real-time PNT 
      services.
FAU - Huang, Guanwen
AU  - Huang G
AD  - College of Geology Engineering and Geomantic, Chang'an University, 126 Yanta 
      Road, Xi'an 710054, China. huang830928@163.com.
FAU - Qin, Zhiwei
AU  - Qin Z
AD  - College of Geology Engineering and Geomantic, Chang'an University, 126 Yanta 
      Road, Xi'an 710054, China. gnssorbitqzw@163.com.
FAU - Zhang, Qin
AU  - Zhang Q
AD  - College of Geology Engineering and Geomantic, Chang'an University, 126 Yanta 
      Road, Xi'an 710054, China. gnssorbitqzw@chd.edu.cn.
FAU - Wang, Le
AU  - Wang L
AD  - College of Geology Engineering and Geomantic, Chang'an University, 126 Yanta 
      Road, Xi'an 710054, China. rexlele@163.com.
FAU - Yan, Xingyuan
AU  - Yan X
AD  - College of Geology Engineering and Geomantic, Chang'an University, 126 Yanta 
      Road, Xi'an 710054, China. yanxydice@163.com.
FAU - Fan, Lihong
AU  - Fan L
AD  - College of Geology Engineering and Geomantic, Chang'an University, 126 Yanta 
      Road, Xi'an 710054, China. fanlihong321@163.com.
FAU - Wang, Xiaolei
AU  - Wang X
AD  - College of Geology Engineering and Geomantic, Chang'an University, 126 Yanta 
      Road, Xi'an 710054, China. gnssrwxl@126.com.
LA  - eng
PT  - Journal Article
DEP - 20171129
PL  - Switzerland
TA  - Sensors (Basel)
JT  - Sensors (Basel, Switzerland)
JID - 101204366
PMC - PMC5751447
OTO - NOTNLM
OT  - GEO/IGSO
OT  - orbital maneuver
OT  - real-time
OT  - satellite identification
OT  - time discrimination
COIS- The authors declare no conflicts of interest.
EDAT- 2017/12/01 06:00
MHDA- 2017/12/01 06:01
PMCR- 2017/12/01
CRDT- 2017/11/30 06:00
PHST- 2017/11/04 00:00 [received]
PHST- 2017/11/26 00:00 [revised]
PHST- 2017/11/27 00:00 [accepted]
PHST- 2017/11/30 06:00 [entrez]
PHST- 2017/12/01 06:00 [pubmed]
PHST- 2017/12/01 06:01 [medline]
PHST- 2017/12/01 00:00 [pmc-release]
AID - s17122761 [pii]
AID - sensors-17-02761 [pii]
AID - 10.3390/s17122761 [doi]
PST - epublish
SO  - Sensors (Basel). 2017 Nov 29;17(12):2761. doi: 10.3390/s17122761.