An unmanned aerial vehicle (UAV) is an aircraft capable of flight without a human operator. This aircraft can be controlled remotely or autonomously via a preprogrammed flight path. A quadrotor UAV is one of the best unmanned aerial vehicles. It is an aircraft whose lift is generated by four DC motors and it is able to take off and land vertically. It also has the advantage that it can be contr...

Unmanned Aircraft Systems (UAS) are increasing their communication subsystems complexity as they are using several data links both for redundancy and for tacking with different communication requirements: different ranges, bandwidth, power consumption or cost. Inside the airframe a similar tendency with respect to communications is appearing. Modern digital avionics are mainly implemented as di...

Detect and Avoid (DAA) systems are complex communication and locational technologies comprising multiple independent components. DAA technologies support communications between ground-based and space-based operations with aircraft. Both manned and unmanned aircraft systems (UAS) rely on DAA communication and location technologies for safe flight operations. We examined the occurrence and durati...

Unmanned aerial vehicles have been developed and applied to support agricultural production management. Compared with piloted aircraft, an Unmanned Aerial Vehicle (UAV) can focus on small crop fields at lower flight altitudes than regular aircraft to perform site-specific farm management with higher precision. They can also “fill in the gap” in locations where fixed winged or rotary winged airc...

Abstract. The use of satellite/UAS technologies in Precision Agriculture (PA) is increasing significantly and the continuous need such kind generating a great economic impact. This study carried out results by using Unmanned Aircraft Systems (UAS) Very Hight Resolution (VHR) satellite imagery for estimation topsoil variability. purpose this contribution concerns data analysis over two Productio...

1 INTRODUCTION Micro Aerial Vehicles (MAV) form a comparably new area of aeronautical research. This type of aircraft is defined by takeoff weights typically less than 500 g and very small dimensions, e.g. wingspans under 50 cm. Intense research is conducted worldwide to further reduce MAV mass and size (e.g. Within this paper, this term is expanded to also include so-called miniature unmanned ...

Unmanned Aircraft Systems (UAS) have evolved rapidly over the past decade driven primarily by military uses, and have begun finding application among civilian users for earth sensing reconnaissance and scientific data collection purposes. Among UAS, promising characteristics are long flight duration, improved mission safety, flight repeatability due to improving autopilots, and reduced operatio...

guidance and control of aircraft in the landing phase imposes extra pilot work loads, hence application of automatic landing control systems is of great importance. in this study automatic landing control systems are introduced and an optimal landing control system is designed. the control system performance criteria are based on minimum control effort. the designed system is simulated for a tr...