GNSS系统时间偏差的确定及其对定位结果的影响

GNSS system time offset determination and its effect on positioning result

由于GNSS各个导航系统都有独立的系统时间,在GNSS多模导航定位中需要对各导航系统之间的系统时差进行处理。以GPS/GLONASS双模导航为例,讨论了系统时差的解决方法以及系统时差对定位结果的影响。实验结果表明,在多模导航定位中考虑系统时差可以有效地提高定位结果的准确性,改善定位结果的精度。

In the Multi-GNSS satellite navigation application, the time offset between different navigation systems needs to be dealt with, since each navigation system has its own system timescale. Taking the combined GPS/GLONASS positioning as an example, the system time offset determination and its effect on positioning result were discussed. The experiment result shows that the positioning accuracy can be improved effectively in multi-GNSS navigation by taking the system time offset into consideration.