Advanced SearchSearch Tips
Elimination of Clock Jump Effects in Low-Quality Differential GPS Measurements
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Elimination of Clock Jump Effects in Low-Quality Differential GPS Measurements
Kim, Hee-Sung; Lee, Hyung-Keun;
  PDF(new window)
Most of single frequency GPS receivers utilize low-quality crystal oscillators. If a lowquality crystal oscillator is utilized as the time reference of a GPS receiver, the receiver`s clock bias grows very fast due to its inherent low precision and poor stability. To prevent the clock bias becoming too large, large clock jumps are intentionally injected to the clock bias and the time offset for clock steering purpose. The abrupt changes in the clock bias and the time offset, if not properly considered, induce serious accuracy degradation in relative differential positioning. To prevent the accuracy degradation, this paper proposes an efficient and systematic method to eliminate the undesirable clock jump effects. Experiment results based on real measurements verify the effectiveness of the propose method.
GPS;Clock bias;Clock steering;Differential positioning;
 Cited by
저가형 수신기를 이용한 실시간 GNSS 자세결정 시스템 설계 및 성능 평가,채정근;이동선;강인숙;박찬식;

전기학회논문지, 2014. vol.63. 9, pp.1259-1265 crossref(new window)
Embedded Linux 기반 무인비행로봇의 저가 고정밀 위치 모니터링 시스템 구현 연구,임준후;김희성;이제영;최광호;조정호;이형근;

제어로봇시스템학회논문지, 2014. vol.20. 12, pp.1196-1203 crossref(new window)
Design and Evaluation of Real-time GNSS Attitude Determination Systems using Low Cost Receivers, The Transactions of The Korean Institute of Electrical Engineers, 2014, 63, 9, 1259  crossref(new windwow)
A Kalman filtering approach to code positioning for GNSS using Cayley-Menger determinants in distance geometry, Journal of Applied Geodesy, 2018, 12, 1  crossref(new windwow)
An Implementation Study on a Low-cost High-accuracy Position Monitoring System for Unmanned Flying Robots, Journal of Institute of Control, Robotics and Systems, 2014, 20, 12, 1196  crossref(new windwow)
Real-Time Receiver Clock Jump Detection for Code Absolute Positioning with Kalman Filter, Wireless Personal Communications, 2014, 79, 1, 211  crossref(new windwow)
Receiver Time Misalignment Correction for GPS-based Attitude Determination, Journal of Navigation, 2015, 68, 04, 646  crossref(new windwow)
T. K. Yeh, C. Hwang, G. Xu, C. S. Wang, and C. C. Lee, "Determination of global positioning system (GPS) receiver clock errors: impact on positioning accuracy", Measurement Science and Technology, vol. 20, no. 7, pp.1-7, 2009.

NovAtel Inc., OEM4 Family of Receivers User Manu-al - Vol. 2 Command and Log Reference. OM- 200000-47, rev. 12, Alberta, Canada, 2003.

A. Q. Le and C. Tiberius, "GPS Standard Positioning Service how good is it?", European Journal of Navigation, vol. 1, no. 2, pp.21-27, 2003.

Septentrio, PolaRx2/2e User Manual, rev. 0, Jan. 2007.

H. S. Kim and H. K. Lee, "Compensation of Time Alignment Error in Heterogeneous GPS Receivers", Proceedings of IAIN World Congress, Stockholm, Oct. 2009.

D. Odijk, J. Traugott, G. Sachs, O. Montenbruck, and C. Tiberius, "Two Approaches to Precise Kinematic GPS Positioning with Miniaturized L1 Receivers", ION GNSS 2007, Fort Worth, TX, Sep. 2007.

G. Werner, RINEX The Receiver Independent Exchange Format Version 2.10, ftp// -data/format/rinex210.txt, 2001.

Y. Andres and O. Montenbruc, "Kalman-filter-based GPS clock estimation for near real-time Positioning", GPS Solutions, vol. 13, no. 3, pp.173-182, 2009. crossref(new window)

W. P. Bradford and J. S. James, Global Positioning System: Theory & Applications I, AIAA, pp.121-124, 410-411, 1996.

H. K. Lee and C. Rizos, "Position-Domain Hatch Filter for Kinematic Differential GPS/GNSS", IEEE Tr. Aerospace and Electronic Systems, vol. 44, no. 1, pp. 30-40, 2008. crossref(new window)