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The UAVs business experiences currently a strong growth in particular thanks to the popularisation of its mini class (e.g. DJI Phantom, Parrot Bebop…). Nevertheless, there is still a need for more capable aircraft, mainly in terms of payload and endurance, in both military and civilian markets. This type of aircraft is historically known as the tactical class, which is a compromise between the affordability...
Small Unmanned Aerial Systems (sUAS) spread rapidly in the last years, both for civil and military applications. The performance of Dangerous, Dull and Dirty missions implies a wide use of the sUAS, in particular to manage hazardous events, such as natural or manmade major incidents or mass casualty situations. The management and control of an emergency are crucial aspects for the rescue teams and...
Aircraft systems are the integral part of the naval operations. These systems have been making great contribution to all kind of naval tasks and operations since previous century. On the other hand, developments in Unmanned Aircraft Systems make Naval Forces replace manned aircraft systems with unmanned ones. Consequently, utilization of Unmanned Air Craft Systems in maritime domain contributes to...
As small unmanned aircraft systems become increasingly affordable, reliable, and formally recognized under federal regulation, they become increasingly attractive as novel platforms for civil applications. This paper details the development and demonstration of both fixed-wing and rotorcraft-based unmanned systems for infrastructure assessment tasks. Tasks such as inspecting pavement condition and...
This work proposes the representation of the high level dynamic modelling of a formation of two quadrotor UAVs cooperatively carrying a suspended load. The two quadrotors are attached to the load by massless and stretchable cables, which can slack and taut during the task accomplishment. The cable is modeled as a high stiffness spring with a damping coefficient, according to the Hooke's law, and its...
During last years the automated classification enabled by Unmanned Aerial System (UASs) captured the interest of many investors and researchers. Several applications could be explored ranging from precision agriculture to Land Use / Land Cover (LU/LC) thematic mapping. The use of UASs is novel when we consider the very high resolution (VHR) multi-hyper spectral sensing of a given area. Remote sensing...
Orthogonal Frequency Division Multiplexing (OFDM) can be a good candidate for wideband communications to transmit payload data from an Unmanned Aerial Vehicle (UAV) to the ground station in an Unmanned Aerial System (UAS). However, OFDM systems are prone to inter-channel interference caused by the Doppler spread. Furthermore, because of possible high speed of UAVs, the Doppler spread can be large...
Payload sensory information is critical to improve the degree of realism and context awareness in multi-UAV simulators. This paper describes a simulator for multi-payload cooperative UAS missions. It adopts an open Software-In-The-Loop (SITL) approach where the simulation of payload sensors and UAV navigation systems are distributed providing high degree of realism. The proposed simulation tool imposes...
This paper investigates forest monitoring and fire detection strategies using a team of unmanned aerial vehicles (UAVs) and unmanned ground vehicles (UGVs). UAVs have great advantages in forest fire detection and fighting. However they have limited running time and payload capabilities, therefore UGVs are paired with UAVs to avoid their demerits. First, UGVs are used to transport the UAVs to the nearest...
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