|
|
Expansion of Skydog Aircraft Model Control System by Remote and Autonomous Control by Android Application
Boček, Michal ; Šimek, Václav (referee) ; Strnadel, Josef (advisor)
The thesis aims to design and implement an Android application with ability to control the autopilot of the Skydog aircraft model using the wireless telemetry. The application shall receive data from an aircraft model gathered from various installed sensors. These data shall be then processed and corresponding instructions for autopilot shall be sent back. When collision with terrain or obstacle is detected, the application shall send instructions to autopilot to avoid such collision. RRT algorithm is used to find collision-free flight trajectory. Database of known obstacles and digital terrain model are provided to application in formats XML and GeoTIFF respectively.
|
|
|
Secure communication within the PX4 platform
Ligocki, Roman ; Martinásek, Zdeněk (referee) ; Číka, Petr (advisor)
PX4 platforma je jedna z nepoužívanějších softwarových balíčků pro řízení bezpilotníhosystému. Používá MAVLink protokol pro komunikaci mezi autopilotem, pozemní stanicía dalšími zařízeními v MAVLink síti. Je speciálně navržen pro bezpilotní systémy použí-vající rádia s nízkou datovou propustností. S rostoucím počtem těchto zařízení docházírovněž k růstu počtu útoků na tyto systémy. Tato diplomová práce obsahuje analízua popis bezpečnostních nedostatků v telemetrické komunikaci platformy PX4 běžící naprotokolu MAVLink. Na základě těchto nedostatků byla dále navržená a implementovánabezpečnostní řešení. Tato implementace zahrnuje šifrování, řízení přístupu, autentizacia systém pro výměnu klíčů. Bezpečnostní implementace je postavená na knihovně Mo-noCypher. Všechny části práce jsou naprogramováno v jazyce C. Cílem autora je sdíletvýsledky, kterých dosáhl s komunitou kolem paltformy PX4. Proto během finální částipráce vznikl pull request do veřejného repozitáře.
|
|
|
The Development of Autonomous Unmanned Aircraft
Hamáček, Vojtěch ; Ligocki, Adam (referee) ; Jílek, Tomáš (advisor)
The aim of this thesis is to modify commercially produced drone DJI Matrice 100 and replace its original control unit by open source Pixhawk and its accessories. Subsequently, it deals with the selection of suitable open source firmware for Pixhawk and its configuration on the device. Another part is dedicated to the possibilities of using the Robotic Operating System (ROS) and its Mavros libraries on the onboard computer Raspberry Pi. By using Mavros, it examines the possibilities of drone flight control, both in the simulation environment and in the real environment.
|
|
|
Obstacle Avoidance System
Dražil, Jan ; Raichl, Petr (referee) ; Novotný, Josef (advisor)
This thesis deals with methods for the problem of navigation and movement of autonomous vehicles between obstacles. The thesis first describes in general terms algorithms for motion planning and obstacle avoidance. Then, the thesis discusses the PX4 firmware for UAV control. The thesis proposes a custom obstacle avoidance algorithm designed for UAVs. The sensor used for obstacle detection is a stereo camera. This algorithm was implemented in Python using the ROS framework and tested in the Gazebo simulation environment. The results are discussed.
|
|
|
Simulation of Unmanned Aircrafts in a Virtual Environment
Lindtner, David ; Lázna, Tomáš (referee) ; Gábrlík, Petr (advisor)
The master thesis deals with the issue of simulation of unmanned aircraft missions in a virtual environment. The aim of the work is to demonstrate basic and more advanced autonomous aerial missions in the simulated environment Gazebo - ROS 2. The work emphasizes the stability of the software solution and the stability of the communication between critical components of the aerial mission.
|
|
|
Obstacle Avoidance System
Dražil, Jan ; Raichl, Petr (referee) ; Novotný, Josef (advisor)
This thesis deals with methods for the problem of navigation and movement of autonomous vehicles between obstacles. The thesis first describes in general terms algorithms for motion planning and obstacle avoidance. Then, the thesis discusses the PX4 firmware for UAV control. The thesis proposes a custom obstacle avoidance algorithm designed for UAVs. The sensor used for obstacle detection is a stereo camera. This algorithm was implemented in Python using the ROS framework and tested in the Gazebo simulation environment. The results are discussed.
|
|
|
Simulation of Unmanned Aircrafts in a Virtual Environment
Lindtner, David ; Lázna, Tomáš (referee) ; Gábrlík, Petr (advisor)
The master thesis deals with the issue of simulation of unmanned aircraft missions in a virtual environment. The aim of the work is to demonstrate basic and more advanced autonomous aerial missions in the simulated environment Gazebo - ROS 2. The work emphasizes the stability of the software solution and the stability of the communication between critical components of the aerial mission.
|
|
|
UAV Swarm Communication And Mission Planning
Kolísek, Josef
Project deals with the issue of swarm UAV flying and uses. The connection is realized bya Wi-Fi network which secure communication with drones and helps to send MAVLink commandsthrough the ground control station via MAVProxy console. The operator is able to control all dronestogether or each drone separately.
|
|
|
Vision-Based Autonomous Navigation Of An Unmanned Aerial Vehicle
Janoušek, Jiří
This article is focused on the real-time detection and recognition of the objects by using acamera located on Unmanned Aerial Vehicle (UAV). The detected objects in the image carry informationabout the next points of the flight plan according to which the drone performs an autonomousflight. The drone can recognize the information encoded in the patterns on the ground by the field ofview of the camera, therefore, it can perform flight manoeuvres consequently. The detection andinformation recognition is performed by a single-board computer and it is based on comparing imageswith a predefined Haar cascade. The single-board computer on the drone recognizes a size andspacing of the individual contrast points which determine the partial information about the next flightpath. Afterward, single-board computer transmits the detected information to the Pixhawk controlunit by using the Mavlink protocol in real-time. The aircraft control unit ensures the accurate positioningof the UAV by sequential execution of the commands.
|
|
|
The Development of Autonomous Unmanned Aircraft
Hamáček, Vojtěch ; Ligocki, Adam (referee) ; Jílek, Tomáš (advisor)
The aim of this thesis is to modify commercially produced drone DJI Matrice 100 and replace its original control unit by open source Pixhawk and its accessories. Subsequently, it deals with the selection of suitable open source firmware for Pixhawk and its configuration on the device. Another part is dedicated to the possibilities of using the Robotic Operating System (ROS) and its Mavros libraries on the onboard computer Raspberry Pi. By using Mavros, it examines the possibilities of drone flight control, both in the simulation environment and in the real environment.
|
guest ::
