PPP RAPID CONVERGENCE ALGORITHM BASED ON REGIONAL ENHANCED INFORMATION
基于区域增强信息的PPP的快速收敛算法

On the basis of a regional CORS reference network,single differenced OMC between satellites were modeled with polynomial fitting model.Rover receiver within the network coverage can get OMCs by interpolation,wide-lane phases.Wide-lane phase observation can be corrected with the OMCs.With the corrected wide-lane observations and ionosphere-free code observations,wide-lane ambiguities can be fixed instantaneously.Once the wide-lane ambiguities were fixed,wide-lane phase observations become precise code observations,with ionosphere-free phase,instantaneous PPP convergence can be achieved.The strategy is validated experimentally with Jiangsu CORS reference network,whose baseline lenths are 49 km and 110 km respctively.The validation confirms that with regional enhancement,wide-lane can be fixed in two epochs,PPP convergence can be achieved simultaneously.