中文摘要：

利用基准站网络采用单星建模的方式对卫星对的星间单差宽巷残差（OMC）建模。流动站内插宽巷OMC,然后对其宽巷观测值进行改正;进行了OMC修正的宽巷观测值不含大气延迟和宽巷UPD的影响,联合无电离层伪距观测值可快速固定宽巷模糊度。固定了模糊度的宽巷观测值可以看成一个高精度的伪距信息,联合无电离层组合相位观测值可实现PPP的快速收敛。采用江苏CORS网中两个不同基线长度的基准站网进行验证分析,结果表明：基于区域增强信息的PPP算法对于平均基线长度为49 km和110 km的两个参考站网内的流动站都可在第二个历元固定宽巷模糊度,同时实现PPP的快速收敛,可以进一步扩展PPP的应用范围。

英文摘要：

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.