Marc Sánchez Net
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View article: Learning Decentralized Routing Policies via Graph Attention-based Multi-Agent Reinforcement Learning in Lunar Delay-Tolerant Networks
Learning Decentralized Routing Policies via Graph Attention-based Multi-Agent Reinforcement Learning in Lunar Delay-Tolerant Networks Open
We present a fully decentralized routing framework for multi-robot exploration missions operating under the constraints of a Lunar Delay-Tolerant Network (LDTN). In this setting, autonomous rovers must relay collected data to a lander unde…
View article: Transforming mission operations: enabling growth in exploration beyond Earth orbit through communications automation provided by delay and disruption tolerant protocols and spacecraft-initiated operations
Transforming mission operations: enabling growth in exploration beyond Earth orbit through communications automation provided by delay and disruption tolerant protocols and spacecraft-initiated operations Open
View article: PropEM-L: Radio Propagation Environment Modeling and Learning for Communication-Aware Multi-Robot Exploration
PropEM-L: Radio Propagation Environment Modeling and Learning for Communication-Aware Multi-Robot Exploration Open
Multi-robot exploration of complex, unknown environments benefits from the collaboration and cooperation offered by inter-robot communication.Accurate radio signal strength prediction enables communication-aware exploration.Models which ig…
View article: Maximizing Dust Devil Follow-Up Observations on Mars Using Cubesats and On-Board Scheduling
Maximizing Dust Devil Follow-Up Observations on Mars Using Cubesats and On-Board Scheduling Open
View article: PropEM-L: Radio Propagation Environment Modeling and Learning for Communication-Aware Multi-Robot Exploration
PropEM-L: Radio Propagation Environment Modeling and Learning for Communication-Aware Multi-Robot Exploration Open
Multi-robot exploration of complex, unknown environments benefits from the collaboration and cooperation offered by inter-robot communication. Accurate radio signal strength prediction enables communication-aware exploration. Models which …
View article: Cycler Orbits and Solar System Pony Express
Cycler Orbits and Solar System Pony Express Open
A network of small satellites is designed to ferry data from Mars to Earth. The small satellites, or data mules, are assumed to have laser communicators and maintain cycler orbits. The concept exploits the fact that two nearby optical comm…
View article: Multi-Robot On-site Shared Analytics Information and Computing
Multi-Robot On-site Shared Analytics Information and Computing Open
Computation load-sharing across a network of heterogeneous robots is a promising approach to increase robots capabilities and efficiency as a team in extreme environments. However, in such environments, communication links may be intermitt…
View article: The Pluggable Distributed Resource Allocator (PDRA): a Middleware for Distributed Computing in Mobile Robotic Networks
The Pluggable Distributed Resource Allocator (PDRA): a Middleware for Distributed Computing in Mobile Robotic Networks Open
We present the Pluggable Distributed Resource Allocator (PDRA), a middleware for distributed computing in heterogeneous mobile robotic networks. PDRA enables autonomous robotic agents to share computational resources for computationally ex…
View article: Autonomous Scheduling of Agile Spacecraft Constellations with Delay Tolerant Networking for Reactive Imaging
Autonomous Scheduling of Agile Spacecraft Constellations with Delay Tolerant Networking for Reactive Imaging Open
Small spacecraft now have precise attitude control systems available commercially, allowing them to slew in 3 degrees of freedom, and capture images within short notice. When combined with appropriate software, this agility can significant…
View article: Mars On-Site Shared Analytics Information and Computing
Mars On-Site Shared Analytics Information and Computing Open
We study the use of distributed computation in a representative multi-robot planetary exploration mission. We model a network of small rovers with access to computing resources from a static base station based on current design efforts and…
View article: Performance characterization of a multiplexed space-to-ground optical network
Performance characterization of a multiplexed space-to-ground optical network Open
Advances in phased array systems for multi-beam free space optical communications are a key enabler for a new space-to-ground network architecture, namely a multiplexed optical architecture. The fundamental idea of a multiplexed space-to-g…
View article: Bifurcation tracking techniques for periodic orbits of PDEs
Bifurcation tracking techniques for periodic orbits of PDEs Open