PMID- 27509503
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180123
LR  - 20181113
IS  - 1424-8220 (Electronic)
IS  - 1424-8220 (Linking)
VI  - 16
IP  - 8
DP  - 2016 Aug 8
TI  - Analysis of the Bias on the Beidou GEO Multipath Combinations.
LID - 10.3390/s16081252 [doi]
LID - 1252
AB  - The Beidou navigation satellite system is a very important sensor for positioning 
      in the Asia-Pacific region. The Beidou inclined geosynchronous orbit (IGSO) and 
      medium Earth orbit (MEO) satellites have been analysed in some studies previously 
      conducted by other researchers; this paper seeks to gain more insight regarding 
      the geostationary earth orbit (GEO) satellites. Employing correlation analysis, 
      Fourier transformation and wavelet decomposition, we validate whether there is a 
      systematic bias in their multipath combinations. These biases can be observed 
      clearly in satellites C01, C02 and C04 and have a great correlation with time 
      series instead of elevation, being significantly different from those of the 
      Beidou IGSO and MEO satellites. We propose a correction model to mitigate this 
      bias based on its daily periodicity characteristic. After the model has been 
      applied, the performance of the positioning estimations of the eight stations 
      distributed in the Asia-Pacific region is evaluated and compared. The results 
      show that residuals of multipath series behaves random noise; for the single 
      point positioning (SPP) and precise point positioning (PPP) approaches, the 
      positioning accuracy in the upward direction can be improved by 8 cm and 6 mm, 
      respectively, and by 2 cm and 4 mm, respectively, for the horizontal component.
FAU - Ning, Yafei
AU  - Ning Y
AD  - State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and 
      Geophysics, 340 Xudong Rd., Wuhan 430077, China. yafeining@whigg.ac.cn.
AD  - University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, 
      China. yafeining@whigg.ac.cn.
FAU - Yuan, Yunbin
AU  - Yuan Y
AD  - State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and 
      Geophysics, 340 Xudong Rd., Wuhan 430077, China. yybgps@whigg.ac.cn.
FAU - Chai, Yanju
AU  - Chai Y
AD  - State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and 
      Geophysics, 340 Xudong Rd., Wuhan 430077, China. cyjigg@whigg.ac.cn.
FAU - Huang, Yong
AU  - Huang Y
AD  - School for Engineering of Matter, Transport and Energy, Arizona State University, 
      Tempe, AZ 85282, USA. hy2000@whut.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20160808
PL  - Switzerland
TA  - Sensors (Basel)
JT  - Sensors (Basel, Switzerland)
JID - 101204366
PMC - PMC5017417
OTO - NOTNLM
OT  - Beidou GEO
OT  - code bias
OT  - correction model
OT  - multipath combinations
EDAT- 2016/08/12 06:00
MHDA- 2016/08/12 06:01
PMCR- 2016/08/08
CRDT- 2016/08/11 06:00
PHST- 2016/04/25 00:00 [received]
PHST- 2016/07/26 00:00 [revised]
PHST- 2016/08/02 00:00 [accepted]
PHST- 2016/08/11 06:00 [entrez]
PHST- 2016/08/12 06:00 [pubmed]
PHST- 2016/08/12 06:01 [medline]
PHST- 2016/08/08 00:00 [pmc-release]
AID - s16081252 [pii]
AID - sensors-16-01252 [pii]
AID - 10.3390/s16081252 [doi]
PST - epublish
SO  - Sensors (Basel). 2016 Aug 8;16(8):1252. doi: 10.3390/s16081252.