Using Predictive Rendering as a Vision-Aided Technique for Autonomous Aerial Refueling
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This research effort seeks to characterize a vision-aided approach for an Unmanned Aerial System (UAS) to autonomously determine relative position to another aircraft in a formation, speci cally to address the autonomous aerial refueling problem. A system consisting of a monocular digital camera coupled with inertial sensors onboard the UAS is analyzed for feasibility of using this vision-aided approach. A three-dimensional rendering of the tanker aircraft is used to generate predicted images of the tanker. A rigorous error model is developed to model the relative dynamics. To quantify the err...
This research effort seeks to characterize a vision-aided approach for an Unmanned Aerial System (UAS) to autonomously determine relative position to another aircraft in a formation, speci cally to address the autonomous aerial refueling problem. A system consisting of a monocular digital camera coupled with inertial sensors onboard the UAS is analyzed for feasibility of using this vision-aided approach. A three-dimensional rendering of the tanker aircraft is used to generate predicted images of the tanker. A rigorous error model is developed to model the relative dynamics. To quantify the errors between the predicted and true images, an image update function is developed using perturbation techniques. Based on this residual measurement and the inertial/dynamics propagation, an Extended Kalman Filter (EKF) is used to predict the relative position and orientation of the tanker from the receiver aircraft. The EKF is simulated through various formation positions during typical aerial refueling operations. Various grades of inertial sensors are simulated to analyze the system's ability to accurately and robustly track the relative position between the two aircraft.
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