天线相位中心改正模型对江西省GPS基准站基线解算的影响

Impact of Antenna Phase Center Correction Model on Baseline Solution in JXCORS

江西是我国较早建成省级CORS的省份,江西省GPS基准站网监测系统(JXCORS)广泛运用在江西省测绘及其他行业。数据处理是JXCORS运行过程中非常关键的一步,在处理过程中选取合适的解算策略来得到高精度的解算结果有助于提高JXCORS产品精度。针对天线相位中心误差对JXCORS数据处理的影响进行了实验,采用TEQC及GAMIT软件对江西CORS站和周边IGS站进行数据处理,对比分析了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JXCORS数据处理中需要考虑天线相位中心误差,且建议使用绝对相位中心改正模型。

Jiongxi built up the provincial level CORS in the early time, where JXCORS has been widely used in surveying and mapping and other industries. Data processing is a very important step in the application of JX- CORS, and choosing the appropriate solution strategy can help improve the precision of JXCORS. This study, aiming at the impact of antenna phase center error on the data processing in JXCORS, processes GPS data from JXCORS station and two IGS stations by use of soft TEQC and GAMIT, and then analyzes the influence of rela- tive and absolute antenna phase center correction models on baseline solution. The results show the impact of antenna phase center is non-ignorable and absolute antenna phase center correction model is better than relative antenna phase center correction model.