研究结果表明：GPS是一种与探空观测有可比性的大气静力延迟和湿延迟测量手段。
The results show that GPS is an instrument for detecting atmospheric ZHD and ZWD with a detection accuracy comparable with radiosonde.
GPS站点测得的静力延迟和湿延迟呈现出不同特征，静力延迟有明显的周期变化，湿延迟的变化与天气过程相关联。
The ZHD and ZWD from different GPS sites exhibit their individual features that ZHD has an obvious periodic change and ZWD is related to weather.
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