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This paper discusses the design and implementation of a light-weight thermal camera payload for small fixed-wing UAVs with a pan/tilt mechanism and georeferencing based on a simple autopilot's GPS and IMU. Further, an effective and simple method to accurately calibrate a thermal camera is developed and tested. In order to evaluate the accuracy of the georeferencing algorithm, a test flight was conducted...
This paper presents results of developing and operating a team of multiple unmanned aircraft system. It is a challenging task since the system complexity increases as the number of the unmanned aircraft increases. Given the autonomy of each vehicle in navigation, guidance, control, and vision-based missions, a system of multiple unmanned aircraft is constructed which is expected to be applied to complicated...
This paper describes a technological development project in charge of collecting and relaying data using UAVs (Unmanned Aerial Vehicles) from one or more small, low power, modular sensor nodes that can be placed in remote areas or floating on the water surface. The overall characteristics and architecture of the proposed sensor nodes and system around them are described. Field tests for one custom-built...
This paper presents a novel small unmanned aerial system which can operate independently and navigate using visual sensors. The basis of the system is a 600 gram quadrotor platform with sonar, inertial sensors and a camera. All processing is performed onboard the vehicle on a lightweight and powerful computer. Vehicle navigation is provided by a two part system. A Bierman Thornton extended Kalman...
This document describes the motivation, theoretical description, development, and flight test of a system that utilizes unmanned air vehicles (UAVs) and unattended ground sensors (UGSs) to detect and image intruders on a road network. The need for completely autonomous behavior drives the design of this system so that the UAV makes onboard decisions based upon inputs from off-board sensors (unattended...
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