A Novel Satellite Selecting Algorithm for BeiDou Navigation Satellite System

In the future, BeiDou Navigation Satellite System (BDS) will has a more widely application in various fields, and high accuracy and fast positioning will be increasingly demanded. Satellite selecting algorithm has a vital influence on positioning accuracy and speed. Therefore, optimal algorithm to select satellites is one of important steps; it will be benefit to improve positioning precision and real-time of navigation. The paper proposes a new satellite selecting algorithm for BDS that bottom satellites are selected in turn after the top and the first bottom satellite are selected. The algorithm selects the optimal satellites for navigation by making full use of available information and the simulated and validated by some simulation results. The results show that the algorithm can improve real-time performance and choose better satellite combination. In addition, it has the advantages of simple, practical, and easy to implement.