Orbit Online Simulation Method Driven by Satellite Telemetry Data
To satisfy the requirement of the satellite online simulation,the orbit propagation method based on sat-ellite telemetry data was studied.Firstly,the appropriate numerical integration method was selected according to the orbit dynamics characteristic.Then,the method of orbit online propagation was designed,which can improve the com-putation efficiency by optimizing the propagation frequency and integral step.And the method of relative orbit propa-gation was further designed,which is favorable for the mission of satellites cooperation.Usingthe GNSS orbit data of a LEO satellite to verification,the calculation speed and calculation accuracy of the method can meet the requirement of engineering application.