大型低轨星座网络规划方法与仿真分析

doi:10.11959/j.issn.2096-8930.20200212

Abstract

Abstract:

Thanks to the advantages of global coverage, high capacity and low latency, the large-scale LEO satellite constellation networks has become a hot spot for global development.However, planning methods and simulation modeling research for LS-LEOSCN has not been well studied.This paper focused on the following two issues, namely how to evaluate a given LSLEOSCN, and how to design or optimize a constellation network.Three key indicators for evaluating the performance of LSLEOSCN were established, namely network coverage (CT), system throughput (ST) and round-trip time (RTT).Further, the satellite constellation deployment (SCD), gateway station deployment (GSD) were analyzed and designed in the integrated network evaluation and planning (NEaP) platform for LS-LEOSCN.The simulation results showed that the designed NEaP platform could support the development of LS-LEOSCN evaluation and planning.

Key words: LEO satellite constellation network, performance evaluation, network planning, platform implementation

CLC Number:

TN927+.2

Lixiang LIU, Shuaijun LIU. Network Planning Method and Simulation Analysis for Large-Scale Low Earth Orbit Satellite Constellation Networks[J]. Space-Integrated-Ground Information Networks, 2020, 1(2): 87-94.

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References 17

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参数名称	参数设置
LEO卫星星座	OneWeb
卫星数量/颗	M=648
轨道面个数/个	N_O=18
轨道面内卫星数量/颗	N_P=36
轨道高度/km	h=1 200
轨道倾角	i=87°
终端通信最小仰角	40°
馈电站通信最小仰角	10°
馈电链路传输速率/(Gbit/s^-1)	21
用户链路传输速率/(Gbit/s^-1)	20
星间链路传输速率/(Gbit/s^-1)	1
馈电站个数/个	J=7
馈电站可连接卫星数量/颗	K=[1～20]
星间链路ISLs	无
传输体制	DVB-S2X^[14]
全球业务量分布	基于全球人口分布，人均1 Mbit/s+1%激活率
仿真分析步长/min	1
仿真分析周期/h	24
经纬度颗粒度/°	1

Network Planning Method and Simulation Analysis for Large-Scale Low Earth Orbit Satellite Constellation Networks

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