Study On The Tube-Navigation Of Strictly-Regressive Orbit

The relative motion features between satellite and strictly-regressive reference orbit were investigated to build a tube-navigation method of remote-sensing satellite. Since the reference orbit was designed only with the high precision non-spherical perturbation, it had a different dynamic environment with the satellite in space, leading an excursion in along-track direction. An along-track aligning algorithm was introduced to get rid of the excursion in along track direction based on high precision orbit dynamic model and position sampling method, by which the phase-time excursion and relative motion trajectory were determined. The direct least squares fitting method was introduced to achieve the features of relative motion trajectory. The study on tube-navigation can be applied to autonomous ground-track keeping of satellites with GNSS measurements.