Gary Ellingson
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View article: Cooperative Navigation of Fixed-Wing Micro Air Vehicles in GPS-Denied Environments
Cooperative Navigation of Fixed-Wing Micro Air Vehicles in GPS-Denied Environments Open
Micro air vehicles have recently gained popularity due to their potential as autonomous systems. Their future impact, however, will depend in part on how well they can navigate in GPS-denied and GPS-degraded environments. In response to th…
View article: Progress on GPS-Denied, Multi-Vehicle, Fixed-Wing Cooperative Localization
Progress on GPS-Denied, Multi-Vehicle, Fixed-Wing Cooperative Localization Open
This paper first summarizes recent results of a proposed method for multiple, small, fixed-wing aircraft cooperatively localizing in GPS-denied environments. It then provides a significant future works discussion to provide a vision for th…
View article: Toward GPS-Denied, Multi-Vehicle, Fixed-Wing Cooperative Localization
Toward GPS-Denied, Multi-Vehicle, Fixed-Wing Cooperative Localization Open
This paper describes a vision and proposes a method for multiple, small, fixed-wing aircraft cooperatively localizing in GPS-denied environments. Recent work has focused on the development of a monocular, visualinertial odometry for fixed-…
View article: Relative Navigation in GPS‐Degraded Environments
Relative Navigation in GPS‐Degraded Environments Open
For unmanned aircraft systems to become fully integrated into society, safe and reliable methods for estimation and control are required even when global measurements such as GPS are degraded or unavailable. In these situations, estimating…
View article: Landing Zone Determination for Autonomous Rotorcraft in Surveillance Applications
Landing Zone Determination for Autonomous Rotorcraft in Surveillance Applications Open
This paper presents an approach for finding possible landing sites for a rotorcraft from an inertially referenced point-cloud model of the environment. To identify potential landing sites that are suitably flat and level, a grid-based rand…