Satellite-Clock Modeling in Single-Frequency PPP-RTK Processing
Kan Wang, Amir Khodabandeh, Peter JG Teunissen, Nandakumaran Nadarajah
JOURNAL OF SURVEYING ENGINEERING | ASCE-AMER SOC CIVIL ENGINEERS | Published : 2018
The real-time kinematic precise point positioning (PPP-RTK) technique enables integer ambiguity resolution by providing singlereceiver users with information on the satellite phase biases next to the standard PPP corrections. Using undifferenced and uncombined observations, rank deficiencies existing in the design matrix need to be eliminated to formestimable parameters. In this contribution, the estimability of the parameters was studied in single-frequency ionosphere-weighted scenario, given a dynamic satellite-clock model in the network Kalman filter. In case of latency of the network corrections, the estimable satellite clocks, satellite phase biases, and ionospheric delays need to be pr..View full abstract
Awarded by Australian Research Council (ARC) Federation Fellowship
The authors thank the IGS, GA, and Vicmap Position-GPSnet (Victoria State Government) for providing the orbit and the clock products, the precise coordinates, and the observation data of the stations. The orbit and clock products were obtained through the online archives of the Crustal Dynamics Data Information System (CDDIS), NASA Goddard Space Flight Center, Greenbelt, MD (ftp://cddis.gsfc.nasa.gov/gnss/products/). The authors also thank their colleagues in the GNSS Research Centre, Curtin University, for their contributions on the development of the Curtin PPP-RTK Software. P. J. G. Teunissen is recipient of an Australian Research Council (ARC) Federation Fellowship (Project FF0883188).