中文摘要：

采用常加速度动态PPP模型对3次车载GPS试验数据进行处理和分析,结果显示非差车载GPS获取动态对流层延迟的精度可达1cm。该方式获取的对流层延迟精度与汽车运行环境存在较大关联。此外,接收机的质量也可能影响所获动态对流层延迟的连续性。

英文摘要：

Kinematic ZTD （zenith total delay） obtained by car-born GPS has broad application pros- pects. This paper firstly discusses the precise point positioning algorithm of obtaining ZTD by un- difference moving GPS. Three car-born GPS experimental data setsare processed and analyzed by the constant-speed kinematic PPP mode. The results show that the precision of kinematic ZTD obtained by un-difference car-born GPS can reach 1 cm. Results also show that there is high correlation be- tween the ZTD precision obtained by this method and the operating environment of automobile. Fur- thermore, the quality of receiver used probably largely affects the continuity of kinematic ZTD.