Deep visual gravity vector detection for unmanned aircraft attitude estimation. - Gary J. Ellingson; David Wingate; Timothy W. McLain (IROS, 2017)

Relative visual-inertial odometry for fixed-wing aircraft in GPS-denied environments. - Gary J. Ellingson; Kevin M. Brink; Timothy W. McLain (PLANS, 2018)

Relative navigation of autonomous GPS-degraded micro air vehicles. - David O. Wheeler; Daniel P. Koch; James S. Jackson; Gary J. Ellingson; Paul W. Nyholm; Timothy W. McLain; Randal W. Beard (Auton. Robots, 2020)

Cooperative Relative Navigation of Multiple Aircraft in Global Positioning System-Denied/Degraded Environments. - Gary J. Ellingson; Kevin M. Brink; Timothy W. McLain (J. Aerosp. Inf. Syst., 2020)