中文摘要：

为了分析不同截止高度角对基线解算的影响，以及选择最合适的截止高度角来进行GNSS数据处理，本文选取中国及周边11个IGS站2013年第102～117天的16天数据，通过GAMIT软件解算不同截止高度角条件下的基线结果，通过对比分析，得出当截止高度角取10°～15°时，基线解算结果最佳。

英文摘要：

In order to analyze the effect of different cut off el- evation angles on baseline solution, and to select the most appropriate cut off angle for GNSS data processing, this pa- per selects 16-day data of 11 IGS stations in China from 102th to l17th of 2013. By using GAMIT for decoding base line results under the condition of different cut-off elevation angles, comparison and analysis results show that baseline solution result is the best when the cut off elevation angle is 10°-15°.