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Collaborating Authors

 Jones, William


3D Cloud reconstruction through geospatially-aware Masked Autoencoders

arXiv.org Artificial Intelligence

Clouds play a key role in Earth's radiation balance with complex effects that introduce large uncertainties into climate models. Real-time 3D cloud data is essential for improving climate predictions. This study leverages geostationary imagery from MSG/SEVIRI and radar reflectivity measurements of cloud profiles from CloudSat/CPR to reconstruct 3D cloud structures. We first apply self-supervised learning (SSL) methods-Masked Autoencoders (MAE) and geospatially-aware SatMAE on unlabelled MSG images, and then fine-tune our models on matched image-profile pairs. Our approach outperforms state-of-the-art methods like U-Nets, and our geospatial encoding further improves prediction results, demonstrating the potential of SSL for cloud reconstruction.


Deep Learned Path Planning via Randomized Reward-Linked-Goals and Potential Space Applications

arXiv.org Artificial Intelligence

Space exploration missions have seen use of increasingly sophisticated robotic systems with ever more autonomy. Deep learning promises to take this even a step further, and has applications for high - level tasks, like path planning, as well as low - level tasks, like motion control, which are critical components for mission efficiency and success. Using deep reinforcement end - to - end learning with randomized reward function parameters during training, we teach a simulated 8 degree - of - freedom quadruped ant - like robot to travel anywhere within a perimeter, conducting path plan and motion control on a single neural network, without any system model or prior knowledge of the terrain or environment. Our approach also allows for user specified waypoints, which could translate well to either fully autonomous or semi - autonomous/tele - operated space applications that encounter delay times. We train ed the agent using randomly ge nerated waypoints linked to the reward function and passed waypoint coordinates as inputs to the neural network. Such applications show promise on a variety of space exploration robots, including high speed rovers for fast locomotion and legged cave robots for rough terrain.