BDS卫星天线相位偏差对PPP法估计ZTD的影响

发布时间：2018-02-21 17:28

本文关键词： BDS 卫星天线相位偏差 ZTD PPP MGEX模型 ESA模型 IGS周解精度　出处：《辽宁工程技术大学学报(自然科学版)》2017年04期 　论文类型：期刊论文

【摘要】：为详细分析不同的BDS卫星的天线相位偏差模型差异性及其对ZTD估计的影响,分别采用MGEX模型和ESA模型改正天线相位偏差,利用PPP法处理8个MGEX站观测数据估计ZTD.以PPP法获得的GPS ZTD为参考值,实验结果表明:采用现有天线相位偏差改正模型能提高BDS ZTD估计精度;与MGEX模型相比,ESA模型能更有效的减小系统偏差,提高内、外符合精度;固定测站坐标能显著减小ZTD估值的系统偏差,提高外符合精度.因此,推荐采用ESA模型改正BDS卫星天线相位偏差.
[Abstract]:In order to analyze the difference of antenna phase deviation model of different BDS satellites and its influence on ZTD estimation, the phase deviation of antenna is corrected by MGEX model and ESA model, respectively. The PPP method is used to estimate the observed data of 8 MGEX stations. Taking the GPS ZTD obtained by the PPP method as the reference value, the experimental results show that the estimation accuracy of BDS ZTD can be improved by using the existing antenna phase deviation correction model. Compared with the MGEX model, the MGEX model can reduce the system deviation more effectively and improve the accuracy of the internal and external coincidence, and the fixed station coordinates can significantly reduce the system deviation of the ZTD estimation and improve the external coincidence accuracy. ESA model is recommended to correct the phase deviation of BDS satellite antenna.
【作者单位】：辽宁工程技术大学测绘与地理科学学院;
【基金】：国家青年基金项目(41504030) 辽宁省科技厅博士启动基金项目(201501126) 大学生创新创业训练计划项目(201510147044)
【分类号】：P228.4

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