Pre-Calculated Space-Ground Multi-Dimensional Structure (P-SGMDS): Disaster-Resilient Survivability Design in Terrestrial-Satellite Optical Networks (TSON)

The disaster-resilient survivability is an important research focus for the terrestrial optical network (TON). The terrestrial-satellite optical network (TSON) brings a new solution to address it. In this article, a pre-calculated space-ground multi-dimensional structure (P-SGMDS) is designed. It can resist random concurrent dual-link failures or any number of fiber link failures. Simulations are conducted in the satellite constellations of Iridium and Starlink phase I. Numerical results show the P-SGMDS has high protection success rate.