TY - GEN
T1 - Multi-GNSS system time offset determination and its effect on positioning performance
AU - Jiao, Yue
AU - Kou, Yanhong
AU - Xu, Dongyang
PY - 2012
Y1 - 2012
N2 - In multi-GNSS applications, the difference among different time reference systems, called system time offset, has a significant impact on positioning, timing, velocity measurement, and frequency calibration. Therefore it must be taken into consideration. The paper first extends the two time offset determination methods for dual GNSS systems to the triple-system case, with one at system level and the other at user level. The geometry matrix and DOP parameters with triple-system time offsets are modeled accordingly. Then the satellite signals with different time offsets, different mask angles, and different combinations of GPS/Compass/Galileo systems are simulated respectively using a multi-GNSS constellation simulator, and sent to a multi-GNSS software receiver to obtain the position solutions using the two time offset determination methods. The simulation results show that the two methods yield very little difference on positioning precision with the system-level method slightly outperforming the user-level method.
AB - In multi-GNSS applications, the difference among different time reference systems, called system time offset, has a significant impact on positioning, timing, velocity measurement, and frequency calibration. Therefore it must be taken into consideration. The paper first extends the two time offset determination methods for dual GNSS systems to the triple-system case, with one at system level and the other at user level. The geometry matrix and DOP parameters with triple-system time offsets are modeled accordingly. Then the satellite signals with different time offsets, different mask angles, and different combinations of GPS/Compass/Galileo systems are simulated respectively using a multi-GNSS constellation simulator, and sent to a multi-GNSS software receiver to obtain the position solutions using the two time offset determination methods. The simulation results show that the two methods yield very little difference on positioning precision with the system-level method slightly outperforming the user-level method.
KW - Multi-system navigation
KW - Positioning accuracy
KW - System level
KW - System time offset
KW - User level
UR - https://www.scopus.com/pages/publications/84861678497
U2 - 10.1007/978-3-642-29187-6_40
DO - 10.1007/978-3-642-29187-6_40
M3 - 会议稿件
AN - SCOPUS:84861678497
SN - 9783642291869
T3 - Lecture Notes in Electrical Engineering
SP - 407
EP - 416
BT - Proceedings - 3rd China Satellite Navigation Conference, CSNC 2012, Revised Selected Papers
T2 - 3rd China Satellite Navigation Conference, CSNC 2012
Y2 - 15 May 2012 through 19 May 2012
ER -