This book contains peer reviewed paper reprints from the 2nd International Symposium on Unmanned Aerial Vehicles, June 2009. It covers the latest advances in Unmanned Aircraft Systems (UAS) Modeling, Control and Identification; UAS Navigation, Path Planning and Tracking; UAS Vision and Vision-Based Systems; UAS Landing and Forced Landing; Simulation Platforms and Testbeds; and UAS Applications. The volume brings together the latest research findings from the rapidly evolving and expanding area of UAS, along with current technical challenges and future needs that need be overcome in order to utilize fully unmanned aviation in civilian/public domain applications. This work is suitable for the researcher and scientist, the practitioner, the novice and the UAV user. It may also serve as a reference text for graduate level special topic courses in UAVs. Also published in the Journal of Intelligent and Robotic Systems, Volume 57, Issues 1-4, 2010
