PMID- 27999384
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180124
LR  - 20181113
IS  - 1424-8220 (Electronic)
IS  - 1424-8220 (Linking)
VI  - 16
IP  - 12
DP  - 2016 Dec 20
TI  - BDS Precise Point Positioning for Seismic Displacements Monitoring: Benefit from 
      the High-Rate Satellite Clock Corrections.
LID - 10.3390/s16122192 [doi]
LID - 2192
AB  - In order to satisfy the requirement of high-rate high-precision applications, 1 
      Hz BeiDou Navigation Satellite System (BDS) satellite clock corrections are 
      generated based on precise orbit products, and the quality of the generated clock 
      products is assessed by comparing with those from the other analysis centers. The 
      comparisons show that the root mean square (RMS) of clock errors of geostationary 
      Earth orbits (GEO) is about 0.63 ns, whereas those of inclined geosynchronous 
      orbits (IGSO) and medium Earth orbits (MEO) are about 0.2-0.3 ns and 0.1 ns, 
      respectively. Then, the 1 Hz clock products are used for BDS precise point 
      positioning (PPP) to retrieve seismic displacements of the 2015 Mw 7.8 Gorkha, 
      Nepal, earthquake. The derived seismic displacements from BDS PPP are consistent 
      with those from the Global Positioning System (GPS) PPP, with RMS of 0.29, 0.38, 
      and 1.08 cm in east, north, and vertical components, respectively. In addition, 
      the BDS PPP solutions with different clock intervals of 1 s, 5 s, 30 s, and 300 s 
      are processed and compared with each other. The results demonstrate that PPP with 
      300 s clock intervals is the worst and that with 1 s clock interval is the best. 
      For the scenario of 5 s clock intervals, the precision of PPP solutions is almost 
      the same to 1 s results. Considering the time consumption of clock estimates, we 
      suggest that 5 s clock interval is competent for high-rate BDS solutions.
FAU - Geng, Tao
AU  - Geng T
AD  - GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, China. 
      gt_gengtao@whu.edu.cn.
FAU - Su, Xing
AU  - Su X
AD  - GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, China. 
      longtian00@163.com.
FAU - Fang, Rongxin
AU  - Fang R
AD  - GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, China. 
      rfang@whu.edu.cn.
FAU - Xie, Xin
AU  - Xie X
AD  - GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, China. 
      xiexin@whu.edu.cn.
FAU - Zhao, Qile
AU  - Zhao Q
AD  - GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, China. 
      zhaoql@whu.edu.cn.
FAU - Liu, Jingnan
AU  - Liu J
AD  - GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, China. 
      jnliu@whu.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20161220
PL  - Switzerland
TA  - Sensors (Basel)
JT  - Sensors (Basel, Switzerland)
JID - 101204366
PMC - PMC5191171
OTO - NOTNLM
OT  - BDS
OT  - Nepal earthquake
OT  - precise point positioning
OT  - satellite clock corrections
OT  - seismic displacements
COIS- The authors declare no conflict of interest.
EDAT- 2016/12/22 06:00
MHDA- 2016/12/22 06:01
PMCR- 2016/12/01
CRDT- 2016/12/22 06:00
PHST- 2016/10/24 00:00 [received]
PHST- 2016/12/13 00:00 [revised]
PHST- 2016/12/14 00:00 [accepted]
PHST- 2016/12/22 06:00 [entrez]
PHST- 2016/12/22 06:00 [pubmed]
PHST- 2016/12/22 06:01 [medline]
PHST- 2016/12/01 00:00 [pmc-release]
AID - s16122192 [pii]
AID - sensors-16-02192 [pii]
AID - 10.3390/s16122192 [doi]
PST - epublish
SO  - Sensors (Basel). 2016 Dec 20;16(12):2192. doi: 10.3390/s16122192.