TY - GEN
T1 - Quantitative research on GPS positioning in an east-north-up coordinate system
AU - Guo, Yanbing
AU - Miao, Lingjuan
AU - Zhang, Xi
N1 - Publisher Copyright:
© 2019 Technical Committee on Control Theory, Chinese Association of Automation.
PY - 2019/7
Y1 - 2019/7
N2 - As the basic function of GPS, positioning has been studied extensively. However, the quantitative analysis of GPS position errors using pseudoranges is still not accurate enough. Therefore, in this paper, GPS position errors are further analysed in an East-North-Up local topocentric coordinate system. If all visible satellites are used for positioning, the expressions for GPS position errors are significantly improved by setting corresponding parameters for different latitudes. On this basis, the interrelationships between various position errors are established. If the standard deviation of a user's pseudorange error sigma{mathrm {U}mathrm {R}mathrm {E}} is known, the standard deviations of GPS position errors can be estimated more accurately according to the proposed formulas. The accuracy of the proposed formulas is verified using a SPIRENT satellite signal simulator, which generates realistic satellite signals at the equator, 45° north latitude and the North Pole respectively.
AB - As the basic function of GPS, positioning has been studied extensively. However, the quantitative analysis of GPS position errors using pseudoranges is still not accurate enough. Therefore, in this paper, GPS position errors are further analysed in an East-North-Up local topocentric coordinate system. If all visible satellites are used for positioning, the expressions for GPS position errors are significantly improved by setting corresponding parameters for different latitudes. On this basis, the interrelationships between various position errors are established. If the standard deviation of a user's pseudorange error sigma{mathrm {U}mathrm {R}mathrm {E}} is known, the standard deviations of GPS position errors can be estimated more accurately according to the proposed formulas. The accuracy of the proposed formulas is verified using a SPIRENT satellite signal simulator, which generates realistic satellite signals at the equator, 45° north latitude and the North Pole respectively.
KW - All visible satellites
KW - Expressions for GPS position errors
KW - GPS position errors using pseudoranges
KW - Interrelationships between various position errors
KW - Setting corresponding parameters
KW - Standard deviations of GPS position errors
UR - http://www.scopus.com/inward/record.url?scp=85074384911&partnerID=8YFLogxK
U2 - 10.23919/ChiCC.2019.8866190
DO - 10.23919/ChiCC.2019.8866190
M3 - Conference contribution
AN - SCOPUS:85074384911
T3 - Chinese Control Conference, CCC
SP - 3958
EP - 3963
BT - Proceedings of the 38th Chinese Control Conference, CCC 2019
A2 - Fu, Minyue
A2 - Sun, Jian
PB - IEEE Computer Society
T2 - 38th Chinese Control Conference, CCC 2019
Y2 - 27 July 2019 through 30 July 2019
ER -