Accuracy analysis of GPS/BDS relative positioning using zero-baseline measurements
Tóm tắt
This paper focuses on assessing the precision of carrier phase relative positioning using GPS-only, BDS-only and GPS/BDS measurements. A zero baseline is used in order to achieve this. Software for GPS and BDS processing has been developed, allowing static and kinematic data processing, as well as the combined GPS and BDS processing. Ionospheric and tropospheric delays are significantly reduced by double differencing between satellites and receivers, but the Multipath signals are still a major source of error for the various general GNSS baseline applications. In this paper, two Multi-GNSS receivers are connected to one antenna by an antenna splitter. This strategy results in all the delays or errors being mitigated, leaving only the random measurement noises resulted from the double difference processing. The time series of the final baseline error reveal that both GPS and BDS can achieve a precision of millimetres, but GPS performs better than BDS. Results from the combined processing of GPS and BDS demonstrate that the integration of GPS and BDS can significantly improve the precision, compared with the GPS-only and BDS-only results.
Tài liệu tham khảo
BeiDou-SIS-ICD-Test (2011) BeiDou navigation satellite system signal in space interface control document (Test Version), China Satellite Navigation Office
Deng C, Tang W, Liu J et al (2013) Reliable single-epoch ambiguity resolution for short baselines using combined GPS/BeiDou system. GPS Solutions 18(3):375–386
Fu X, Wu M (2011) Optimal design of broadcast ephemeris parameters for a navigation satellite system. GPS Solutions 16(4):439–448
Gao GX, Chen A, Lo S et al (2009) Compass-M1 broadcast codes in E2, E5b, and E6 frequency bands. Ieee J-Stsp 3(4):599–612
Grelier T, Dantepal J, Delatour A et al (2007) Initial observations and analysis of compass MEO satellite signals. Inside GNSS 2:39–43
Hauschild A, Montenbruck O, Sleewaegen JM et al (2012) Characterization of compass M-1 signals. GPS Solutions 16(1):117–126
He HB, Li JL, Yang YX et al (2014) Performance assessment of single- and dual-frequency BeiDou/GPS single-epoch kinematic positioning. GPS Solutions 18(3):393–403
Liu Z (2010) A new automated cycle slip detection and repair method for a single dual-frequency GPS receiver. J Geod 85(3):171–183
Odolinski R, Teunissen PJG, Odijk D (2014) Combined BDS, Galileo, QZSS and GPS single-frequency RTK. GPS Solutions 19(1):151–163
Shi C, Zhao Q, Hu Z, Liu J (2012) Precise relative positioning using real tracking data from compass geo and igso satellites. GPS Solutions 17(1):103–119
Tang X (2014) GPS/BDS precise positioning methods and applications, p 141
Tang X, He XF, Andam-Akorful SA (2014) The performance of Bds relative positioning usage with real observation data. Boletim De Ciencias Geodesicas 20(2):223–236
Teunissen PJG, Odolinski R, Odijk D (2014) Instantaneous BeiDou plus GPS RTK positioning with high cut-off elevation angles[J]. J Geod 88(4):335–350
Wang G, de Jong K, Zhao Q et al (2014) Multipath analysis of code measurements for BeiDou geostationary satellites. GPS Solutions 19(1):129–139