中文摘要：

针对PPP初始收敛段定位精度低而造成的定位结果无法利用的问题,文章提出将前后向平滑算法应用干动态PPP解算中,以获取整个观测时段的高精度定位结果;针对PPP成果缺乏质量检核手段的问题,文章提出构造前后向位置不符值作为质量检核指标.模拟动态算例和船载动态算例表明：平滑后的动态PPP克服了前向、后向滤波初始收敛段定位精度差的问题,整体位置误差RMS在10cm内,提高了数据利用率;收敛段的前后向位置不符值RMS也在10cm内,该指标可用来对PPP成果进行质量检核.

英文摘要：

To improve the positioning accuracy of PPP in the initial convergence period, the paper ap- plied the forward-backward-smoothing algorithms in kinematic PPP to obtain high accuracy positioning so- lutions in the entire observation period. To assess the PPP result, it used the position discrepancy between the forward and backward PPP filters as an index. Two kinematic PPP calculation tests indicated that the kinematic PPP after smoothing would overcome the disadvantage of bad positioning accuracy of forward and backward PPP filter in the initial convergence period and improve the utilization efficiency of the data with a position error RMS bellow 10 cm. Moreover, the forward and backward position discrepancy RMS was under 10 cm, which could be used for the quality assessment of PPP results.