Abstract：We extracted ionospheric delay from the combination observations, built the regional ionospheric model and then tested the WHU products by processing single point positioning for rover stations data. The validation of a provincial CORS (Continuously Operating Reference Stations) network confirms that the singlefrequency SPP of WHU product results present significantly better than CODE product and dualfrequency SPP, at the same time, singlefrequency PPP accuracy increases by about 10%×30% in three directions compared with CODE product, can reach up to about 11.5dm in the north and east direction, and 22.5 dm in the up direction. Finally, we processed dualfrequency PPP with WHU ionospheric product, the experimental results show that the precision ionospheric products play a significant role to improve the initial positioning accuracy, and accelerate dualfrequency PPP convergence and interrupt reconvergence.
Zhang Rui,Yao Yibin, and Zheng Yanli. REGIONAL IONOSPHERIC MODELING AND ITS APPLICATION IN SINGLE POINT POSITIONING ANALYSIS[J]. jgg, 2013, 33(1): 69-73.
