卫星星历参考框架对GNSS相对定位解算的影响分析  

Influence Analysis of Satellite Ephemeris Reference Frame on Relative Positioning of GNSS

作　　者：杨阳 孙建军[1] YANG Yang(不详)

机构地区：[1]天津市勘察院,天津300191

出　　处：《地理空间信息》2021年第1期35-37,I0005,共4页Geospatial Information

基　　金：天津市重点研发计划科技支撑重点资助项目(18YFZCSF00620)。

摘　　要：系统研究了GNSS精密星历框架变化对GNSS相对定位以及网平差解算的影响。通过实验比较发现,在高精度GNSS相对定位中,若选择的地面参考框架与精密轨道参考框架不一致,则将给区域网基线解和网平差结果带来一定的系统性误差。对于高精度的定位解算而言,2 000 km以上的基线需考虑地面参考基准与星历参考基准的一致性问题,否则将给垂直方向带来一定的系统性偏差。In this paper,we studied the influence of GNSS precise ephemeris frame change on GNSS relative positioning and network adjustment.Through the comparison of experiments,it was found that there were some systematic errors in the baseline solution of regional network and the result of network adjustment,if the ground reference frame was not consistent with the reference frame of precise orbit in high precision GNSS relative positioning.For high-precision positioning,the consistency of terrestrial reference datum and ephemeris reference datum should be considered for baselines over 2 000 km.Otherwise,there would be some systematic deviation in vertical direction.

关 键 词：相对定位 精密星历 参考基准 系统性偏差 

分 类 号：P228.4[天文地球—大地测量学与测量工程]