面向多波束卫星通信网络的步进跟踪方法

面向多波束覆盖的卫星通信网络，为解决相控阵用户终端位置姿态信息无法获取时程序跟踪卫星失效的问题，提出了一种步进扫描跟踪方法。在该方法中，终端仅需比较单个波束的信标接收能量即可判断波束指向，从而降低跟踪时延。在此基础上，为满足终端在动中通场景下的业务通信需求，进一步研究动态条件下的跟踪方法，并讨论跟踪时延的影响因素。实验结果表明，当终端位置姿态变化较小时，所提方法的跟踪性能接近程序跟踪。

An angle-increment tracking method for multi-beam satellite communication networks

In multi-beam satellite communication networks,the conventional tracking method is invalid when the position and attitude of phased array user terminal can not be obtained.To solve the problem,this paper proposes an angle-increment tracking method.In this method,only one beacon strength of multiple beams is compared,which reduces the tracking delay.Moreover,to track correctly for satellite on-the-move applications,the tracking method is further studied under high dynamic and the factors influencing the tracking delay are discussed.Experiment results show that the performance of the proposed method is close to that of the conventional one when the position and attitude of user terminal change slowly.