天线相位中心改正模型对南极GPS基线解算的影响

The impact of antenna phase center correction model on the GPS baseline solution in Antarctic

针对南极地区全球定位系统(GPS)数据解算结果精度较差的问题,该文通过选取合适的解算策略来得到高精度的解算结果。采用GAMIT软件对我国南极地区的长城站、中山站及周边的11个IGS站进行数据处理,对比分析了不使用天线相位中心改正模型以及相对和绝对天线相位中心改正模型对基线解算的影响。结果表明,在南极地区进行高精度GPS数据处理时应考虑天线相位中心的影响,绝对相位中心改正模型比相对相位中心改正模型得到的结果更为精确。

In order to solve the low accuracy of GPS data in Antarctic,appropriate solution strategy should be studied to get better result.The GPS data from Chinese Great Wall station,Zhongshan station and eleven IGS stations in Antarctica were processed using GAMIT software,no antenna phase correction、absolute and relative antenna phase center correction models were used separately in data processing.The results showed that the impact of antenna phase center was non-ignorable,the effect of absolute antenna phase center correction model was better than that of relative antenna phase center correction model on the GPS baseline solution in Antarctic.