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UAVs are used in several remote applications. While performing a mission, electro-mechanical faults can occur which requires the UAVs to land quickly and safely. Landing in emergency conditions is a time critical problem, where, the UAV needs to find a landing site and plan a path to the selected site that satisfies some safety criterion in a given time. In this paper, we use terrain information from...
In this work, a vision-based Flight Guidance and Navigation System is developed for providing cross-country soaring functionality to a small UAV glider. The overall system is based on existing major contributions to autonomous soaring while still missing components have been designed. A cumulus-cloud mapping algorithm was extended to not only estimate the position of cumuli but also their drift velocity...
Sense and Avoid (SAA) has been identified as one of the crucial technologies for integrating UAV into civil airspace, and vision based SAA is regarded as a promising solution. In this paper we described our vision based SAA system consisted of onboard vision detection system and Groud Control Station (GCS) to fulfill the intruder detection and avoid maneuver control tasks. To realize the small intruder...
Path planning for an Unmanned Aerial Vehicle which can be used in many different purposes is a challenging issue especially in tasks involving large number of visiting points. The problem becomes more complex when the flight environment is taken into account with numerous constraints. In this paper, Simulated Annealing (SA) algorithm is used to obtain nearly optimal path in 2D radar constrained environment...
We present an approach to efficiently plan flight paths for unmanned fixed-wing aircraft in uniform wind fields. Time-optimal parametric paths are constructed from segments that correspond to stationary flight conditions and may fully utilize the aircraft's performance limits. We provide the tools to analytically derive safety margins for flight performance limits required to compensate for systematic...
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