星地多波束链路载荷控制方法设计及时序分析

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

    • 摘要: 低轨卫星多波束链路载荷对于提升卫星任务灵活性、能效比等方面的能力具有重要意义,是构建天地一体化网络的重要组成部分。文中分析了低轨卫星在轨工作应用模式,提出了一种星地多波束链路载荷多维控制方法及波束组独立调度的时序方法,支持快速且独立配置各个波束工作参数,可在时隙保护间隔内完成工作频点调整,适应在轨后不同阶段应用需求和使用约束;同时,通过波束组零耦合时序设计解决载荷轻型化约束下的波束组间调度耦合问题。时序仿真结果表明,该时序方法支持在24.94 μs内完成波束组内捷变波束指向更新和在65.86 μs内完成凝视波束指向更新,可适应5G通信网络和各种专用网络的使用需求。

       

      Abstract: 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.

       

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