高低轨通信卫星接入特性浅析

Access Characteristics of High-orbit and Low-orbit Communicati on Satellites

摘要:

以航空场景为例,基于大圆轨迹原则进行航线飞行轨迹模拟。从动态飞行目标和卫星空间关系的角度出发,对典型高轨高通量通信卫星和低轨通信卫星星座的波束或卫星切换频次、可接入波束或卫星数量、通信距离、终端指向需求、多普勒效应影响以及卫星容量需求等方面进行了仿真分析,描述两者在通信过程中的差异和特点,为通信卫星系统设计和优化提供参考。

Abstract:

Taking the aviation scene as an example, the flight trajectory of airline issimulated based on the principle of large circle trajectory. From the perspective of the spatiarelationship between dynamic flight targets and satellites, simulation analysis is made on thebeam or satellite switching frequency, number of accessible beams or satellites.communication distance, terminal pointing requirements， Doppler effects and satellitecapacity requirements of typical high-orbit high-throughput communication satellites andlow-orbit communication satellite constellations, Describe the differences and characteristicsbetween them in the communication process, it provides reference for the design andoptimization of communication satellite system.