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面向多飞行器接入的分层功率分配方法
首发时间：2025-03-11
摘要：低轨卫星（leo）与临近空间飞行器（nsv）接入需求激增,达到了万量级。为了增加系统的接入容量,本文研究圆穹顶相控阵基站一个波束内接入多个飞行器的新型网络。飞行器轨道以千米为单位变化,导致基站接收端的信号相差多个量级且波动明显,极易造成远端用户接入失败问题。针对这一问题,本文提出一种基于轨道分层的功率分配方案。通过将用户分层并使用层间指数调节机制平滑调控层间用户功率,均衡接收端的用户信号,使其达到一个量级。在单层内,通过引入松弛变量、分式规划等方法获取单层内功率优化的闭式解。将所提方案部署在“gw”或“starlink”接入圆穹顶基站场景中,实验结果表明,本文所提出的方案较传统方案显著提升了单波束内的接入容量。
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a layered power allocation scheme for multi-spacecraft access networks
abstract：the demand for access to low-orbit satellites (leo) and near-space vehicles (nsvs) has surged to ten-thousand-level degree. to increase system access capacity, this letter studies a new network of dome phased array base stations accessing multiple spacecraft operating on different orbits in single beam. since the user's orbit changes in kilometers, the signal at the receiver differs by multiple orders of magnitude and fluctuates significantly, which can cause the failure of the remote user connection. to solve this problem, this letter proposes a layered power allocation scheme. by grouping users, inter-layer exponential regulation is used to mitigate the $km$-level distance difference and intra-layer user power allocation derives a power closed-form solution using relaxation variables, quadratic transformation. the proposed scheme is deployed in the “gw” or “starlink” access dome base station scenario. the experimental results show that the proposed scheme significantly improves the access capacity in a single beam compared with the traditional scheme.
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