The detailed error analysis is done to the ground-based GPS sensing of water vapor content, zenith wet delay is primary error source.
对地基GPS遥感水汽含量进行详尽的误差分析，天顶湿延迟是主要的误差源。
参考来源 - 实时GPS遥感水汽技术的理论研究·2,447,543篇论文数据，部分数据来源于NoteExpress
然后进行天顶湿延迟至可降水量的转换，结合现场的气象资料进行对比分析。
After that wet zenith delay is calculated into PWV, and field meteorologic data are combined to analyzing.
首先，针对目前湿延迟模型精度偏低，提出使用外部气象数据近实时反演湿延迟。
First, wet delay for the current model of low precision and made use of external inversion of wet weather data in near real time delay.
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.
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