Abstract
BeiDou Navigation Satellite System (BDS) had been officially operating since the end of 2012. It can provide service of navigation, timing, and positioning in the Asia-Pacific region. In recent years the precise positioning on BDS had been widely studied and the accuracy of BDS Precise Point Positioning (PPP) can reach centimeters. Due to the satellite clock error corrections are fixed in PPP model, the accuracy and stability of real-time satellite clock errors would directly impact the positioning accuracy of real-time PPP (RT-PPP) and are the key points of RT-PPP. In this contribution, the method of fast computation of real-time precise satellite clock errors for combined BDS/GPS was investigated. First, the estimation model of real-time satellite clock based on epoch-differenced observations was studied. Then, the extended Kalman filter (EKF) was used to estimate the satellite clock errors based on real observations which collected from multi-GNSS experiment (MGEX) stations. The accuracy of BDS/GPS real-time clock errors was also analyzed which compared with the final precise clock products. Finally, the performance of BDS/GPS RT-PPP with the real-time BDS/GPS satellite clock errors was investigated. The results showed that the real-time BDS/GPS clock corrections were comparable with the final precise clock corrections and can satisfy the accuracy requirement of RT-PPP.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Zumberge JF, Heflin MB, Jefferson DC et al (1997) Precise point positioning for the efficient and robust analysis of GPS data from large networks. J Geophys Res Solid Earth (1978–2012) 102(B3):5005–5017
Pan ZP, Chai HZ, Liu M et al (2015) Real-time GLONASS precise satellite clock corrections estimation and precise point positioning. J Geod Geodyn 35(6):992–996
Huang GW, Zhang Q, Xu GC (2014) Real-time clock offset prediction with an improved model. GPS Solut 18(1):95–104
Hadas T, Bosy J (2014) IGS RTS precise orbits and clocks verification and quality degradation over time. GPS Solut 19(1):93–105
China Satellite Navigation Office (CSNO) (2012) BeiDou navigation satellite system signal in space interface control document. http://gge.unb.ca/test/beidou_icd_english.pdf
Yang YX, Li JL, Xu JY et al (2011) Contribution of the compass satellite navigation system to global PNT users. Chin Sci Bull 56(26):2813–2819
Lou Y, Liu Y, Shi C et al (2014) Precise orbit determination of BeiDou constellation based on BETS and MGEX network. Sci Rep 4(8):1255–1264
Zhao Q, Guo J, Li M et al (2013) Initial results of precise orbit and clock determination for COMPASS navigation satellite system. J Geodesy 87(5):475–486
Montenbruck O, Hauschild A, Steigenberger P et al (2013) Initial assessment of the COMPASS/BeiDou-2 regional navigation satellite system. GPS Solut 17(2):211–222
Lou Y, Liu Y, Shi C et al (2015) Precise orbit determination of BeiDou constellation: method comparison. GPS Solut 1–10
Zhang W, Lou Y, Gu S et al (2015) Joint estimation of GPS/BDS real-time clocks and initial results. GPS Solut 1–12. doi:10.1007/s10291-015-0476-y
Li X, Ge M, Dai X et al (2015) Accuracy and reliability of multi-GNSS real-time precise positioning: GPS, GLONASS, BeiDou, and Galileo. J Geod 89(6):607–635
Ge M, Chen J, Douša J et al (2012) A computationally efficient approach for estimating high-rate satellite clock corrections in realtime. GPS Solut 16(1):9–17
Kouba J, Héroux P (2001) Precise point positioning using IGS orbit and clock products. GPS Solut 5(2):12–28
Bock H, Dach R, Jäggi A et al (2009) High-rate GPS clock corrections from CODE: support of 1 Hz applications. J Geod 83(11):1083–1094
Acknowledgments
Thanks to the IGS MGEX and GFZ for providing GNSS observations and precise ephemeris products. This work was supported by National Natural Science Foundation of China (No. 41274045, 41574010) and State Key Laboratory of Geo-information Engineering (No. SKLGIE2015-Z-1-1).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 Springer Science+Business Media Singapore
About this paper
Cite this paper
Pan, Z. et al. (2016). Fast Computation Method of Real-Time Precise Satellite Clock Errors for Combined BDS/GPS. In: Sun, J., Liu, J., Fan, S., Wang, F. (eds) China Satellite Navigation Conference (CSNC) 2016 Proceedings: Volume III. Lecture Notes in Electrical Engineering, vol 390. Springer, Singapore. https://doi.org/10.1007/978-981-10-0940-2_9
Download citation
DOI: https://doi.org/10.1007/978-981-10-0940-2_9
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-0939-6
Online ISBN: 978-981-10-0940-2
eBook Packages: EngineeringEngineering (R0)