FAST star selection algorithm based on BDS/GPS combination

As the number of satellites in the global satnav system increases, so does the computational load for satellite positioning, which consumes more time and impacts real-time positioning. To enhance real-time positioning and reliability, adopting an appropriate satellite selection strategy is crucial. This paper proposes a fast satellite selection algorithm based on a BDS/GPS combination. It considers the minimum geometry dilution of precision (GDOP) and the time of satellite selection, selecting all visible satellites of the BDS/GPS dual system. Experiments indicate that, within the same time frame, the star selection results obtained by the proposed fast star selection algorithm outperform other star selection algorithms. The algorithm effectively reduces the computational load of the positioning solution while ensuring positioning accuracy.