"GPS 卫星运动及定位 matlab 仿真简析"

定位、timing and speed measurement system, which has been widely used in many fields around the world. The positioning of GPS satellites is a complex system, which involves numerous parameters such as time system, spatial coordinate system, etc. This design is aimed at the MATLAB simulation implementation of satellite motion positioning. Due to the low requirements, the satellite motion has been idealized, and the perturbation of the satellite is ignored (hence it is a perturbation-free motion). The Kepler's law and the least squares method are used to calculate the orbital parameters of the satellite, and a brief analysis of its motion law is carried out. MATLAB programming simulation is used to implement the satellite's motion plane, motion dynamics, distribution of visible satellites, and to calculate the user's position using visible satellites. Through this design, a preliminary understanding of GPS satellites is obtained, and a certain understanding of static single-point positioning, pseudorange, and other related concepts is obtained. Keywords: GPS satellite, perturbation-free motion, pseudorange, MATLAB simulation.