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中文摘要：
为了对卫星双向时间频率传递（TWSTFT）站间钟差残差与测站环境温度之间的关系进行分析，利用2005年6月的C波段TWSTFT的观测数据，对TWSTFT站间钟差残差与上海站、西安站的环境温度的相关系数进行了分析，并建立了联结TWSTFT站间钟差残差与测站环境温度的拟合函数。分析结果表明：测站环境温度对TWSTFT站问钟差残差的影响是明显的。对站间钟差残差进行温度拟合修正后，站间钟差残差RMS降低25％～50％。测站应该保持观测设备恒温，这对于C波段TWSTFT的站间时间同步具有特殊意义。
英文摘要：
For analyzing the correlation between the clock offset and the environmental temperatures of stations for TWSTFT（two-way satellite time frequency transfer）, the correlation coefficients between the clock offset and the environmental temperatures of stations for TWSTFT are calculated and analyzed, and a fitted function that relates the residual of clock offset with the environmental temperatures of stations is constructed by using the observation data of TWSTFT （in C-band, for Shanghai-Xi＇an link, during the June of 2005）. The results show that the environmental temperatures obviously affect the residuals of clock offset. The residuals of clock offset are revised with the fitted function and the RMS（root-mean-square） values of the revised residuals of clock offset reduce by 25%-50%. The observation devices should be kept in an environment with constant temperature, which is of special significance to the time synchronization between the stations for TWSTFT in C-band.
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