使用TBC软件进行BDS基线解算精度分析

Accuracy Analysis of BDS Baseline Solution Based on TBC Software

为了验证基于TBC软件进行BDS长、短基线解算的精度以及可靠性,使用TBC软件采用不同解算模式对实测数据进行处理。经分析可知,基于TBC软件进行BDS短基线解算成果与GPS基本一致,水平分量较差优于2.5 mm、垂直分量较差优于5 mm,都具有较高的水平精度和垂直精度;BDS基线精度略优于GPS,实际应用中可用广播星历代替精密星历进行基线解算。基于TBC软件加载精密星历进行BDS长基线解算成果与GPS相比,水平分量较差为5 cm、垂直分量较差为12 cm以内。实际应用中可使用快速星历或超快速星历代替精密星历进行BDS长基线解算。

In order to verify the accuracy and reliability of BDS long and short baseline calculation,TBC software is used to process the measured data with different calculation modes.According to the analysis,the result of BDS short baseline solution is basically the same as that of GPS,the difference of horizontal component is better than 2.5 mm,the difference of elevation direction is better than 5 mm,both of which have high horizontal and vertical accuracy,and the accuracy of BDS baseline is slightly better than that of GPS.In practical application,broadcast ephemeris can be used instead of precise ephemeris.Compared with GPS,the result of BDS long baseline solution based on TBC software using precise ephemeris is less than 5 cm in horizontal component and less than 12 cm in elevation component.In practical application,fast ephemeris or super fast ephemeris can be used instead of precise ephemeris for BDS long baseline solution.