Overall Design Method of Low Earth Orbit Communication Satellite Based on MBSE

doi:10.16182/j.issn1004731x.joss.24-1156

Abstract

Abstract:

Drawing on the model-centric design philosophy of model-based systems engineering (MBSE), this study constructs a model architecture suitable for the design and analysis of low Earth orbit communication satellites. This architecture adopts a multi-dimensional matrix approach. Vertically, it traverses the mission layer, system layer, satellite general design layer, and subsystem layer, achieving top-down hierarchical decoupling. Horizontally, it establishes a comprehensive view mapping mechanism covering the domains of requirements, functions, structure, and performance. Integrating the characteristics of product development, a modeling process covering the entire lifecycle—from mission demonstration and overall design to subsystem design and integration verification—has been established. The results indicate that this method can effectively accomplish requirement analysis and overall design in the design phase of low Earth orbit communication satellites, thereby enhancing overall design quality. It also holds significant reference value for advancing the development paradigm of low Earth orbit communication satellites.

Key words: low Earth orbit communication satellite, model-based system engineering (MBSE), model architecture, requirement analysis, overall design

CLC Number:

TP391.9

Shang Jiace, Zhang Rui, Dai Ya, Zhu Hua, Hu Siqi, Ge Linqiang, Shi Chenguang. Overall Design Method of Low Earth Orbit Communication Satellite Based on MBSE[J]. Journal of System Simulation, 2026, 38(4): 1080-1093.

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关键参数	说明	值
Semimajor Axis/km	半长轴	7 151
Inclination/(°)	倾角	86.4
Eccentricity	离心率	0
DLfreq/GHz	下行链路频率	20
EIRP/dBW	卫星发射功率	35
G*T ^-1/dB	地面站接收G/T值	3
RreqEbNo/dB	所需每比特能量噪声功率谱密度比	10
ArrayConfig/波长	相控阵阵列元件间距	0.5