Design and Time Sequence Analysis of Payload Control Method for Satellite Earth Multi-beam Link

The multi-beam link payload of low earth orbit(LEO) satellite is of great significance for improving satellite mission flexibility, energy efficiency ratio and other aspects, and is an important component of building an integrated network in space-integrated-ground network. The application mode of LEO satellite is analyzed, a multi-dimensional payload control method for satellite ground multi-beam links and a timing method for independent scheduling of beam groups are proposed in this paper, which support fast and independent configuration of various beam working parameters, enable the adjustment of the working frequency points within the time slot protection interval, in order to adapt to the different application requirements and usage constraints; At the same time, a timing design is presented to solve the coupling problem of beam group scheduling under the constraint of payload lightweighting. The timing simulation results show that the timing method supports updating the agile beam pointing within the beam group within 24.94 μs and updating the gaze beam pointing within 65.86 μs, and can adapt to the usage needs of 5G communication networks and various specialized networks.