提出一种基于参考站增强信息的精密单点定位(PPP)算法。与其他方法的不同在于采用星间历元间差分技术，消除了模糊度和接收机钟差，回避了模糊度参数的收敛或固定难题。应用基于参考站的增强信息，以减弱残余对流层延迟和潜在偏差对定位结果的影响。与传统 PPP 处理方法相比较，该方法可以改善位置参数的收敛速度，定位精度也有一定程度的提高。%A new algorithm based on the regional reference stations network augmentation is proposed to realize precise point positioning (PPP).Different from other methods,the presented strategy uses the satel-l ite-differenced and epoch-differenced (SDED)technology.It removes the ambiguity and receiver clock parameters,and avoids the ambiguities converging or fixing.To weaken the influence of the residual tropospheric delay and potential biases,another new strategy is presented to deal with the satellite and epoch differenced biases (SEDB).Comparison to the normal PPP,the new method can improve the convergence and positioning accuracy,when less than 1500 s data was processed.
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