Fault Detection Method of Low-Orbit Satellite Internet Based on Deep Uncertainty Estimation Network

Wenyu SUN; Weijia ZHANG; Limin WANG

doi:10.11959/j.issn.2096-8930.2022025

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Fault Detection Method of Low-Orbit Satellite Internet Based on Deep Uncertainty Estimation Network

Study | 更新时间：2024-06-03

- Fault Detection Method of Low-Orbit Satellite Internet Based on Deep Uncertainty Estimation Network
- Space-Integrated-Ground Information Networks Vol. 3, Issue 2, Pages: 89-97(2022)
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- DOI：10.11959/j.issn.2096-8930.2022025
  CLC： TP393
- Published Online：2022-06，
  
  Published：20 June 2022
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Wenyu SUN, Weijia ZHANG, Limin WANG. Fault Detection Method of Low-Orbit Satellite Internet Based on Deep Uncertainty Estimation Network[J]. Space-integrated-ground information networks, 2022, 3(2): 89-97.
DOI：

Wenyu SUN, Weijia ZHANG, Limin WANG. Fault Detection Method of Low-Orbit Satellite Internet Based on Deep Uncertainty Estimation Network[J]. Space-integrated-ground information networks, 2022, 3(2): 89-97. DOI： 10.11959/j.issn.2096-8930.2022025.

摘要

低轨卫星互联网技术具有创新性强、已有案例少且卫星数量众多、拓扑变化频繁、载荷类型繁杂等特点，其故障类别难以靠专家系统或者工程经验等方法遍历和训练。同时传统的基于单颗卫星、单一功能的故障检测和诊断方法，对于复杂多变条件下的不确定性故障难以进行预测。针对以上问题，提出一种基于深度不确定性估计网络的低轨卫星互联网星座故障预测算法模型，并基于地面星地联试获得的数据对所提方法进行验证。实验结果表明，提出的方法可以提高已知故障的检测准确率，尤其是对未知故障具有更准确的预测能力。

Abstract

Low-orbit satellite internet technology is a highly innovative direction of development with few existing cases.Low-orbit satellite internet systems are characterised by a large number of constituent satellites

frequent topology changes

and complex payload types.The fault categories of such complex systems are diffi cult to be completely mastered with methods such as expert systems or practical engineering experience.Moreover

traditional fault detection and diagnosis methods tailored for a single satellite and a single functionality are diffi cult to predict uncertain faults under sophisticated and transient environment conditions.For the above problems

a fault prediction model based on the deep uncertainty estimation network for low-orbit satellite internet was proposed

and was verifi ed used self-collected data from simulated joint satellite-ground tests.Experimental results showed that the proposed method could improved the detection accuracy of known types of faults and demonstrated particular eff ectiveness in predicting faults of unknown types.

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