Analyzing the robustness of LEO satellite networks based on two different attacks and load distribution methods

Area of Science:

• Space engineering
• Network security
• Telecommunications

Background:

• Low Earth orbit (LEO) satellite constellations offer global high-speed internet but face increasing security challenges.
• Cascading failures in satellite networks can lead to widespread outages, necessitating enhanced robustness.

Purpose of the Study:

• To explore the robustness of LEO satellite networks against cascading failures.
• To propose a modeling method for LEO network robustness and an improved ground station establishment strategy.

Main Methods:

• Developed a modeling method based on virtual nodes and load capacity for LEO satellite networks.
• Proposed an improved ground station establishment method considering network structure.
• Studied network robustness under different attack scenarios and cost constraints.

Main Results:

• Simulations demonstrated that maximum load attacks significantly impact LEO satellite networks.
• Network topology and parameter adjustments can mitigate the destructive effects of attacks.
• The proposed model and findings offer practical insights for protecting LEO satellite systems.

Conclusions:

• LEO satellite network robustness against cascading failures is critical for reliable global internet services.
• The developed modeling approach and ground station strategy enhance network resilience.
• Findings provide actionable strategies to mitigate cascading risks and improve LEO system robustness.