Current studies rarely mention radar detection of hybrid vertical take-off and landing (VTOL) fixed-wing drones. We investigated signals an industry-tier VTOL drone, TX25A, compared with the results a quad-rotor DJI Phantom 4. used X-band pulse-Doppler phased array to collect tracking data two drones in coastal area near Yellow Sea China. The measurements indicate that TX25A had double values c...

This paper presents a local path planning method for real time applications with Unmanned Aerial Vehicles in unknown environments by considering an onboard sensor of a limited range. Both static and mobile obstacles are considered. The collisions are detected from a laser sensor readings and an efficient algorithm computes the solution trajectory to avoid them. The proposed approach generates a...

This paper presents the design of a Fuzzy PID controller (FPID) based on fuzzy logic with a PID structure with many valued logic and reasoning. The self-turning Fuzzy PID control take in an error and the rate of change of error of the altitude and attitude of the quadrotor as the input to the fuzzy controller and use the fuzzy rules to adjust the PID parameter automatically. Simulations have be...

Micro-air vehicles have been increasingly employed in diverse research projects in both military and civilian applications. That is because their high maneuverability and accurate mobility. Many of them have been successfully used in outdoor areas, while some have been operated indoors. However, very few have dedicated especial attention to the case of high pitch and roll movements while doing ...

A predictor-based controller for time-varying delay systems is presented in this paper and its robustness properties for different uncertainties are analyzed. First, a time-varying delay dependent stability condition is expressed in terms of LMIs. Then, uncertainties in the knowledge of all plant-model parameters are considered and the resulting closed-loop system is shown to be robust with res...

We present a quad-rotor micro aerial vehicle (MAV) that is capable to fly and navigate autonomously in an unknown environment. The only sensory input used by the MAV are the imagery from two cameras in a stereo configuration, and data from an inertial measurement unit. We apply a fast sparse stereo matching algorithm in combination with a visual odometry method based on PTAM to estimate the cur...

The topic of this paper is the utilisation of a strategy with a dual control system for the prevention of damage on laboratory equipment used in a remote laboratory. One control system is implemented before the laboratory is deployed and is responsible for damage control and can override the second control system that is programmed by the user of the remote laboratory and is fully configurable....

In literature, several approaches are trying to make the UAVs fly autonomously i.e., by extracting perspective cues such as straight lines. However, it is only available in well-defined human made environments, in addition to many other cues which require enough texture information. Our main target is to detect and avoid frontal obstacles from a monocular camera using a quad rotor Ar.Drone 2 by...