Now showing items 1-11 of 11

    • Bank-to-Turn Control for a Small UAV using Backstepping and Parameter Adaptation 

      Jung, Dongwon; Tsiotras, Panagiotis (Georgia Institute of Technology, 2008-07)
      In this research we consider the problem of path following control for a small fixed-wing unmanned aerial vehicle (UAV). Assuming the UAV is equipped with an autopilot for low level control, we adopt a kinematic error ...
    • Beyond Quadtrees: Cell Decomposition for Path Planning using the Wavelet Transform 

      Cowlagi, Raghvendra V.; Tsiotras, Panagiotis (Georgia Institute of TechnologyIEEE, 2007-12)
      Path planning techniques based on hierarchical multiresolution cell decompositions are suitable for online implementation due to their simplicity and speed of implementation. We present an efficient multiresolution cell ...
    • Design and Development of a Low-Cost Test-Bed for Undergraduate Education in UAVs 

      Jung, Dongwon; Jevy, E. J.; Zhou, D.; Fink, R.; Moshe, J.; Earl, A.; Tsiotras, Panagiotis (Georgia Institute of Technology, 2005)
      This article describes the efforts undertaken at the School of Aerospace Engineering at the Georgia Institute of Technology for the development of a low-cost Unmanned Aerial Vehicle (UAV) test-bed for educational purposes. ...
    • Design, Development, and Testing of a Low Cost, Fully Autonomous Indoor Unmanned Aerial System 

      Chowdhary, Girish; Sobers, D. Michael Jr.; Salaün, Erwan; Ottander, John; Johnson, Eric N. (Georgia Institute of TechnologyAmerican Institute of Aeronautics and Astronautics, 2010-08)
      This paper is concerned with the design, development, and autonomous flight testing of the GT Lama indoor Unmanned Aerial System (UAS). The GT Lama is a fully autonomous rotorcraft UAS capable of indoor area exploration. ...
    • A Hierarchical On-Line Path-Planning Scheme Using Wavelets 

      Tsiotras, Panagiotis; Bakolas, Efstathios (Georgia Institute of Technology, 2007-07)
      We present an algorithm for solving the shortest (collision-free) path planning problem for an agent (e.g., wheeled vehicle, UAV) operating in a partially known environment. The agent has detailed knowledge of ...
    • An ILS Inspired Approach and Departure System Utilizing Monocular Vision 

      Christmann, Hans Claus; Johnson, Eric N. (Georgia Institute of Technology, 2009-07)
      This paper introduces a simple system to provide relative position between a base unit and an active unit. The proposed system is directional and allows the active unit to approach or depart from the base unit along a ...
    • Inertial Attitude and Position Reference System Development for a Small UAV 

      Jung, Dongwon; Tsiotras, Panagiotis (Georgia Institute of TechnologyAmerican Institute of Aeronautics and Astronautics, Inc., 2007-05)
      This article presents an inexpensive inertial attitude and position reference system for a small unmanned aerial vehicle (UAV) that utilizes low cost inertial sensors in conjunction with a global positioning system (GPS) ...
    • Minimum-Time Paths for a Light Aircraft in the Presence of Regionally-Varying Strong Winds 

      Bakolas, Efstathios; Tsiotras, Panagiotis (Georgia Institute of TechnologyAmerican Institute of Aeronautics and Astronautics, Inc., 2010)
      We consider the minimum-time path-planning problem for a small aircraft flying horizontally in the presence of obstacles and regionally-varying strong winds. The aircraft speed is not necessarily larger than the wind ...
    • Modelling and Hardware-in-the-Loop Simulation for a Small Unmanned Aerial Vehicle 

      Jung, Dongwon; Tsiotras, Panagiotis (Georgia Institute of TechnologyAmerican Institute of Aeronautics and Astronautics, Inc., 2007-05)
      Modeling and experimental identification results for a small unmanned aerial vehicle (UAV) are presented. The numerical values of the aerodynamic derivatives are computed via the Digital DATCOM software using the geometric ...
    • Multiresolution Path Planning Via Sector Decompositions Compatible to On-Board Sensor Data 

      Bakolas, Efstathios; Tsiotras, Panagiotis (Georgia Institute of TechnologyAmerican Institute of Aeronautics and Astronautics, Inc., 2008)
      In this paper we present a hybrid local-global path planning scheme for the problem of operating a moving agent inside an unknown environment in a collision-free manner. The path planning algorithm is based on information ...
    • On-line Path Generation for Small Unmanned Aerial Vehicles using B-Spline Path Templates 

      Jung, Dongwon; Tsiotras, Panagiotis (Georgia Institute of TechnologyAmerican Institute of Aeronautics and Astronautics, Inc., 2008)
      In this study we investigate the problem of generating a smooth, planar reference path, given a family of discrete optimal paths. In conjunction with a path representation by a finite sequence of square cells, the generated ...