摘要
为了进一步提高GPS数据处理中的解算精度,利用标准化均方根残差、坐标偏差等指标,采用GAMIT/GLOBK软件解算,论述不同方案形成的近似坐标精度对数据解算的影响。结果表明:在大范围区域解算时,利用单点定位得到的近似坐标进行基线解算的效果最好,而利用双差定位得到的近似坐标解算的最终坐标精度最高;顾及解算时间和在可接受的解算精度范围内,选择提取观测文件中的近似坐标直接参与解算是最为理想的方式。
In order to further improve the solution accuracy of GPS data processing,the paper used the indicators of standard root mean square residuals and coordinate deviations to calculate the data with the software GAMIT/GLOBK for analyzing the effect of approximate coordinate accuracy obtained by different schemes on data solution.Result showed that using the approximate coordinates to calculate the baselines that were obtained by single-point positioning would be the best in the large range of regional solution,while the approximate coordinates obtained by double-difference positioning would have the highest final accuracy;therefore,it would be the optimal way to select the approximate coordinates from the observation file to directly calculate the data by taking into account the solution time and acceptable range of solution accuracy.
作者
刘洋洋
党亚民
许长辉
LIU Yangyang;DANG Yamin;XU Changhui(Chinese Academy of Surveying and Mapping,Beijing 100830,China)
出处
《导航定位学报》
CSCD
2018年第3期82-86,共5页
Journal of Navigation and Positioning
基金
国家自然科学基金项目(41474011)
国家重点研发计划项目(2016YFB0501405)
国家基础测绘科技项目(2017KJ0205)
全球连续监测评估系统项目(GFZX0301040308-06)
中国测绘科学研究院科研业务费项目(7771707)
作者简介
刘洋洋(1994—),男,河南开封人,硕士研究生,研究方向为GNSS数据处理。;通信作者:党亚民(1965-),男,陕西合阳人,研究员,研究方向为GNSS动力学等。
