Tool for Optimal Reconfiguration of Satellite Swarms (TORSS)

Satellite swarm reconfiguration is performed sporadically to ensure adequate separation between satellites and conformance to mission requirements. However, current reconfiguration techniques are computationally expensive, and often do not find globally optimal solutions. The Tool for Optimal Reconfiguration of Satellite Swarms (TORSS) detects impending loss of inter-satellite separation and separation with other tracked objects such as space debris. TORSS efficiently identifies satellite maneuvers with optimal conformance to the mission plan, fuel consumption, and inter-satellite separation. TORSS provides operators with recommendations for the identified optimal maneuvers to support their decision making. For example, TORSS iteratively monitors positions of satellites in swarms and propagates their trajectories in a simulated environment. When future loss of separation is anticipated, TORSS computes and recommends multiple efficient reconfiguration maneuvers. An operator may then verify and implement one of the recommended maneuvers to avoid loss of inter-satellite separation.

TORSS directly addresses NASA’s stated need for “techniques and applications that can enable autonomous orbit adjustment and other actions to mitigate the potential for in-orbit collisions”. TORSS offers value to the Small Spacecraft Technology (SST) program within NASA’s Space Technology Mission Directorate. The SST intends to expand the ability to perform unique missions with small spacecraft through “identification and investment in the development of new subsystem technologies to enhance or expand the capabilities of small spacecraft”. In the public sector, the United States Space Force’s Space Development Agency is investigating using satellite swarms for missions. TORSS can support automated conjunction assessment and trajectory optimization in their missions. In the private sector, TORSS can support companies such as SpaceX and Intelsat as they embrace satellite swarm technologies.

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