This paper is designed to collect the GNSS observation data of multi-satellite systems under different external observation environments in low latitude areas,and to study the quality of satellite observation data and the accuracy of baseline vector measurement.The experimental results show that:In the comparison of signal-to-noise ratio indexes,the overall level of signal-to-noise ratio of BDS is the same as that of GPS and GLONASS;In the comparison of three indexes such as the number of visible satellites,the data utilisation rate and the multipath error,BDS performs better than GPS and GLONASS;In the open environment,the baseline measurement accuracies of BDS and GPS are comparable and better than that of GLONASS;In the partially shaded environment,the baseline measurement accuracy of BDS is better than that of GPS,while the measurement accuracy of GLONASS is significantly degraded;In the severely shaded environment,only BDS is able to solve qualified baseline vectors,and the baseline vector solving results have a higher reliability.
维普
万方数据