8 papers
Simulation Based Reward Function Validation for Multi-Agent On Orbit Inspection
Patrick Quinn, Bala Prenith Reddy Gopu, George M. Nehma +1
A proposed method for the control of groups of inspection spacecraft is Multi-Agent Reinforcement Learning (MARL). While MARL has already been employed for this purpose in previous…
From Images2Mesh: A 3D Surface Reconstruction Pipeline for Non-Cooperative Space Objects
Bala Prenith Reddy Gopu, Patrick Quinn, George M. Nehma +4
On-orbit inspection imagery is crucial as it enables characterization of non-cooperative resident space objects, providing the geometry and structural condition essential for activ…
Dynamic Scene 3D Reconstruction of an Uncooperative Resident Space Object
Bala Prenith Reddy Gopu, Timothy Jacob Huber, George M. Nehma +5
Characterization of uncooperative Resident Space Objects (RSO) play a crucial role in On-Orbit Servicing (OOS) and Active Debris Removal (ADR) missions to assess the geometry and m…
Real-time Testing of Satellite Attitude Control With a Reaction Wheel Hardware-In-the-Loop Platform
Morokot Sakal, George Nehma, Camilo Riano-Rios +1
We propose the Hardware-in-the-Loop (HIL) test of an adaptive satellite attitude control system with reaction wheel health estimation capabilities. Previous simulations and Softwar…
Adaptive Controller For Simultaneous Spacecraft Attitude Tracking And Reaction Wheel Fault Detection
Camilo Riano-Rios, George Nehma, Madhur Tiwari
The attitude control of a spacecraft is integral to achieving mission success. However, failures in actuators such as reaction wheels are detrimental and can often lead to an early…
Deep Learning Based Dynamics Identification and Linearization of Orbital Problems using Koopman Theory
George Nehma, Madhur Tiwari, Manasvi Lingam
The study of the Two-Body and Circular Restricted Three-Body Problems in the field of aerospace engineering and sciences is deeply important because they help describe the motion o…