Communication over the kinds of Data-Links used for unmanned vehicles presents important challenges dues to the low bandwidth, intermittent, and lower reliability of these links. Classic network protocols such as TCP do not operate well in this environment forcing application developers to implement their own reliability and session management. This presentation describes he issues and alternatives.
data communication using unmanned aerial vehicleSreejesh TR
The document discusses data communication using unmanned aerial vehicles (UAVs). It begins by explaining why UAV-based communication is useful, such as for unexpected missions, disaster relief, and cost-effective connectivity. It then covers UAV system functions like communication among UAVs, sensing, and acting. The document also examines the basic networking architecture, including wireless communication links between UAVs and base stations. It discusses technologies that support UAV systems, such as middleware, as well as channel characteristics and applications of UAV-based communication.
Drones and their Increasing Number of ApplicationsJeffrey Funk
These slides use concepts from my (Jeff Funk) course entitled analyzing hi-tech opportunities to analyze how drones are becoming economic feasible for an increasing number of applications as their costs fall. The costs of drones are falling as the costs of various ICs (controllers, GPS) and MEMS sensors rapidly fall, their performance rises (e.g., accuracy of GPS) and as the cost of carbon fibers fall at a somewhat slower pace than do ICs and MEMS. These falling costs are making drones economically feasible for a number of applications such as producing movies, TV reporting, surveillance, and delivery.
UAV(unmanned aerial vehicle) and its application Joy Karmakar
This document discusses unmanned aerial vehicles (UAVs), including their definition, history, components, applications, and disadvantages. UAVs are aircraft without human pilots that can be controlled autonomously or remotely. They have various applications both militarily and civilly, such as aerial surveillance, search and rescue operations, agriculture, filmmaking, and more. The key components of UAVs are the payload, air vehicle, navigation systems, and communications systems. India has developed several UAVs domestically such as Rustom, Nishant, and Lakshya for military purposes. The future of UAV technology remains dynamic with new discoveries expected over the next 16 years.
This document provides information on unmanned vehicles, including drones and driverless cars. It discusses how unmanned vehicles are controlled either autonomously through onboard computers or remotely by operators. The document also describes the roles of unmanned vehicles in both military and civilian contexts, such as reconnaissance, logistics, aerial photography, and agriculture. It notes some advantages of unmanned vehicles like reducing human exposure to danger, but also challenges like the expense and risk of errors.
This document is a presentation on drones by a group called Omega. It introduces the group members and defines drones as unmanned aerial vehicles controlled remotely or autonomously. It then provides a brief history of drones, discusses Kelvin's idea of insect wing aerodynamics, explains the working principles of lift from wing movement, and applications of drones such as search and rescue, sports filming, and armed attacks. It concludes by discussing advantages and disadvantages of nano drones specifically.
An unmanned aerial vehicle (UAV), commonly known as a Drone, is an aircraft without a human pilot on board. UAVs can be remote controlled aircraft (e.g. flown by a pilot at a ground control station) or can fly autonomously based on pre-programmed flight plans or more complex dynamic automation systems
A UAV is defined as being capable of controlled, sustained level flight and powered by a jet or reciprocating engine. In addition, a cruise missile can be considered to be a UAV, but is treated separately on the basis that the vehicle is the weapon.
Unmanned Aerial Vehicles (UAVs) are aircrafts that fly without any humans being onboard. They are either remotely piloted, or piloted by an onboard computer. This kind of aircrafts can be used in different military missions such as surveillance, reconnaissance, battle damage assessment, communications relay, minesweeping, hazardous substances detection and radar jamming. However they can be used in other than military missions like detection of hazardous objects on train rails and investigation of infected areas. Aircrafts that are able of hovering and vertical flying can also be used for indoor missions like counter terrorist operations
To download this ppt click on this link
https://adf.ly/PdL4V
Communication over the kinds of Data-Links used for unmanned vehicles presents important challenges dues to the low bandwidth, intermittent, and lower reliability of these links. Classic network protocols such as TCP do not operate well in this environment forcing application developers to implement their own reliability and session management. This presentation describes he issues and alternatives.
data communication using unmanned aerial vehicleSreejesh TR
The document discusses data communication using unmanned aerial vehicles (UAVs). It begins by explaining why UAV-based communication is useful, such as for unexpected missions, disaster relief, and cost-effective connectivity. It then covers UAV system functions like communication among UAVs, sensing, and acting. The document also examines the basic networking architecture, including wireless communication links between UAVs and base stations. It discusses technologies that support UAV systems, such as middleware, as well as channel characteristics and applications of UAV-based communication.
Drones and their Increasing Number of ApplicationsJeffrey Funk
These slides use concepts from my (Jeff Funk) course entitled analyzing hi-tech opportunities to analyze how drones are becoming economic feasible for an increasing number of applications as their costs fall. The costs of drones are falling as the costs of various ICs (controllers, GPS) and MEMS sensors rapidly fall, their performance rises (e.g., accuracy of GPS) and as the cost of carbon fibers fall at a somewhat slower pace than do ICs and MEMS. These falling costs are making drones economically feasible for a number of applications such as producing movies, TV reporting, surveillance, and delivery.
UAV(unmanned aerial vehicle) and its application Joy Karmakar
This document discusses unmanned aerial vehicles (UAVs), including their definition, history, components, applications, and disadvantages. UAVs are aircraft without human pilots that can be controlled autonomously or remotely. They have various applications both militarily and civilly, such as aerial surveillance, search and rescue operations, agriculture, filmmaking, and more. The key components of UAVs are the payload, air vehicle, navigation systems, and communications systems. India has developed several UAVs domestically such as Rustom, Nishant, and Lakshya for military purposes. The future of UAV technology remains dynamic with new discoveries expected over the next 16 years.
This document provides information on unmanned vehicles, including drones and driverless cars. It discusses how unmanned vehicles are controlled either autonomously through onboard computers or remotely by operators. The document also describes the roles of unmanned vehicles in both military and civilian contexts, such as reconnaissance, logistics, aerial photography, and agriculture. It notes some advantages of unmanned vehicles like reducing human exposure to danger, but also challenges like the expense and risk of errors.
This document is a presentation on drones by a group called Omega. It introduces the group members and defines drones as unmanned aerial vehicles controlled remotely or autonomously. It then provides a brief history of drones, discusses Kelvin's idea of insect wing aerodynamics, explains the working principles of lift from wing movement, and applications of drones such as search and rescue, sports filming, and armed attacks. It concludes by discussing advantages and disadvantages of nano drones specifically.
An unmanned aerial vehicle (UAV), commonly known as a Drone, is an aircraft without a human pilot on board. UAVs can be remote controlled aircraft (e.g. flown by a pilot at a ground control station) or can fly autonomously based on pre-programmed flight plans or more complex dynamic automation systems
A UAV is defined as being capable of controlled, sustained level flight and powered by a jet or reciprocating engine. In addition, a cruise missile can be considered to be a UAV, but is treated separately on the basis that the vehicle is the weapon.
Unmanned Aerial Vehicles (UAVs) are aircrafts that fly without any humans being onboard. They are either remotely piloted, or piloted by an onboard computer. This kind of aircrafts can be used in different military missions such as surveillance, reconnaissance, battle damage assessment, communications relay, minesweeping, hazardous substances detection and radar jamming. However they can be used in other than military missions like detection of hazardous objects on train rails and investigation of infected areas. Aircrafts that are able of hovering and vertical flying can also be used for indoor missions like counter terrorist operations
To download this ppt click on this link
https://adf.ly/PdL4V
Tutorial on Wireless Communications and Networking with Drones and Unmanned A...saadwalid
A comprehensive tutorial on how drones and unmanned aerial vehicles (UAVs) can be used for wireless communications and networking purpose. The tutorial studies all aspects of drones from performance analysis to deployment, resource management, and security.
Unmanned aerial vehicles (UAVs), commonly known as drones, have evolved from early prototypes in the early 20th century to modern multi-purpose aircraft. Drones range in size from small "micro" drones weighing less than 10kg to larger "heavy" drones over 1000kg. They can be remotely piloted or fly autonomously using satellite navigation. While initially developed for military purposes like reconnaissance and targeting, drones are increasingly used for civilian applications such as fire monitoring, mapping, and aerial photography.
VHF communication systems are used for air traffic control communications between aircraft and ground stations. They operate in the 118-136.975 MHz frequency range and use line-of-sight signals. Modern VHF systems have 720-760 channels and use digital technologies like ARINC 429 data buses for frequency selection and data transfer. VHF systems consist of a transceiver, control head, antennas, and interface to the aircraft audio system.
UAVs, or unmanned aerial vehicles, are aircraft that can fly without a human pilot onboard. They are controlled remotely or can be programmed to fly autonomously. UAVs have been developed for both military and civilian uses such as reconnaissance, surveillance, cargo delivery and more. The document provides a detailed history of UAV development from their origins in the early 20th century to modern applications.
The given slides provide the information on the evolution of UAV in the USA and its scope in the coming time. The slides previews about the drone startups and famous drones build in the USA.
The document provides an overview of unmanned aerial vehicles (UAVs), also known as drones. It discusses the history of UAVs beginning with early attempts in the 1910s and development that accelerated during World Wars I and II. The document describes the typical components of a UAV system and categories of UAVs based on range, altitude, and function, including reconnaissance, combat, logistics, and research. Examples of Indian UAV programs are provided, as well as various civilian and commercial uses of UAVs.
Power Presentation on UAVs.Basically covering all the informative topics related to UAVs.Starting from different terminology and ending up to future vision and advantages.
It is actually a fully made presentation one can directly use to present it.It contains pictures so by the use of it one can able to understand each and every line in the particular slide.
This document is a project report submitted by three students for their Bachelor of Technology degree. It outlines the design and implementation of an unmanned aerial vehicle (UAV) in the form of a quadcopter for campus surveillance. The quadcopter will house a camera and use a wireless transmission system to provide live video feed from the camera to a ground station. Sensors such as an IMU and GPS will be used to help stabilize and navigate the quadcopter. An onboard processor and flight controller using Arduino will control the quadcopter. The project aims to develop a low-cost and lightweight surveillance drone.
The document presents information about a group project on drone technology submitted by students Faisal Saleem, Ehtasham Anwar, and Imran Gulzar to their professor Mr. Taimoor Aamir. It discusses the introduction, history, types, workings, popular drones, uses, and advantages/disadvantages of drones. The types of drones discussed include the MQ-9 Reaper hunter/killer surveillance drone, DJI Phantom commercial/recreational drone, micro-UAVs, biomimetic drones, and blimps/balloons. The document also provides details on the MQ-9 Reaper drone's specifications and operations.
Robert Watson-Watt invented radar in the 1930s while working for the British government. He developed devices for detecting atmospheric discharges and locating approaching aircraft. This led to the development of radar which played a key role in Britain's defense during World War 2.
Radar systems use radio waves that are transmitted and reflected to detect objects. The components of a radar system include a transmitter, antenna, receiver, and indicator. The transmitter creates pulses that are emitted by the antenna. The receiver detects reflections and the indicator, usually a cathode ray tube, displays the results.
Air traffic control radars include Precision Approach Radar for precision landing, Airport Surveillance Radar for short range surveillance, Air Route Surveillance Radar for long
This is a report on ‘drones-an introduction&design’.In this
report I tried to give an introduction about drones or unmanned
aerial vehicles (UAVs) and some preliminary design parameters.
Introduction portion consists of drone history, technology, uses,
and the current generation of drones. Design portion includes
parameters like aerodynamics, payload, endurance, speed and
range, navigation systems and communications.
Radar and secondary radar systems use radio waves to detect objects and provide essential information to operators. Radar works by transmitting radio waves that bounce off targets and are received, allowing calculation of range and position. Secondary radar requires aircraft to carry transponders that respond to interrogations by transmitting a coded reply signal carrying additional data like identification and altitude. This improves detection range and allows transmission of emergency information.
Unmanned aerial vehicles (UAVs), commonly known as drones, have evolved significantly over time. They were first used as early as the 19th century as balloons loaded with explosives. During World War I, they were developed as aerial torpedoes. Nowadays, UAVs are widely used for both military and civilian applications. They come in various configurations like fixed-wing, rotary-wing, and hybrid designs. Key elements of a UAV system include the airframe, propulsion system, sensors, flight computer and payload such as cameras, radars or other instruments.
The content provides the evolution of the Unmanned Aerial Vehicles from the very beginning to the present.
Starting from 1849 with Balloons, the UAVs have now evolved so much with the technology and have gained a lot importance in different sectors.
SEMINAR TOPIC DRDO AEW&CS WHICH CAN REPRESENT ON MY COLLEGE .I PUT THE DATA IN THAT FROM WITH THE HELP OF INTERNET .IN THIS TOPIC I REPRESENT A FEW POINT ABOUT DRDO AEW&CS WHICH ARE IN CURRENT STATUS AND FUTURE DEVELOPMENT IN AIRBORNE EARLY WARNING MACHINE.
This document provides an overview of various radio and satellite navigation aids used in aviation, including:
1. Nondirectional radio beacons, VORs, TACAN, DME, ILS, marker beacons, and GPS satellites which provide navigation capabilities.
2. Airway and route systems like Victor airways, jet routes, and RNAV which define paths between navigation aids and waypoints for aircraft to follow.
3. Protected airspace standards for non-radar airways and routes to ensure safe separation between aircraft.
The document provides an introduction to drones, including their invention and timeline. It discusses the different types of drones, including quadcopters, GPS drones, and delivery drones. It also describes the anatomy of drones, including components like propellers, motors, flight controllers. The document outlines the working principle of drones and various flight modes. Applications of drones discussed include agriculture, sports, military, and humanitarian uses. Advantages and disadvantages of drones are presented. The document concludes with a section on the legality of drone use.
Unmanned Aerial Vehicles (UAVs) are aircrafts that fly without any humans being onboard. They are either remotely piloted, or piloted by an onboard computer. This kind of aircrafts can be used in different military missions such as surveillance, reconnaissance, battle damage assessment, communications relay, minesweeping, hazardous substances detection and radar jamming. However they can be used in other than military missions like detection of hazardous objects on train rails and investigation of infected areas. Aircrafts that are able of hovering and vertical flying can also be used for indoor missions like counter terrorist operations.
The document discusses topology control and mobility strategies for unmanned aerial vehicle (UAV) ad-hoc networks. It provides an overview of target application scenarios for UAV swarms and the motivation for maintaining connectivity in highly mobile UAV networks. Approaches for topology control from the related fields of boids flocking, potential fields, and virtual springs are reviewed. The document proposes a new approach that modifies the potential field method to consider both wireless signal strength and distance between UAVs to determine attractive and repulsive forces for topology control.
The document provides information about UMS Group, a company that provides unmanned aerial systems (UAS) and services. It describes UMS's organizational structure and leadership, various UAS products like the F-330, F-720, and R-350, key system components, and training courses. UMS offers a range of fixed-wing and VTOL UAS, along with data links, avionics, flight control systems, and ground control stations. It also discusses UMS's process for UAS business development projects.
Tutorial on Wireless Communications and Networking with Drones and Unmanned A...saadwalid
A comprehensive tutorial on how drones and unmanned aerial vehicles (UAVs) can be used for wireless communications and networking purpose. The tutorial studies all aspects of drones from performance analysis to deployment, resource management, and security.
Unmanned aerial vehicles (UAVs), commonly known as drones, have evolved from early prototypes in the early 20th century to modern multi-purpose aircraft. Drones range in size from small "micro" drones weighing less than 10kg to larger "heavy" drones over 1000kg. They can be remotely piloted or fly autonomously using satellite navigation. While initially developed for military purposes like reconnaissance and targeting, drones are increasingly used for civilian applications such as fire monitoring, mapping, and aerial photography.
VHF communication systems are used for air traffic control communications between aircraft and ground stations. They operate in the 118-136.975 MHz frequency range and use line-of-sight signals. Modern VHF systems have 720-760 channels and use digital technologies like ARINC 429 data buses for frequency selection and data transfer. VHF systems consist of a transceiver, control head, antennas, and interface to the aircraft audio system.
UAVs, or unmanned aerial vehicles, are aircraft that can fly without a human pilot onboard. They are controlled remotely or can be programmed to fly autonomously. UAVs have been developed for both military and civilian uses such as reconnaissance, surveillance, cargo delivery and more. The document provides a detailed history of UAV development from their origins in the early 20th century to modern applications.
The given slides provide the information on the evolution of UAV in the USA and its scope in the coming time. The slides previews about the drone startups and famous drones build in the USA.
The document provides an overview of unmanned aerial vehicles (UAVs), also known as drones. It discusses the history of UAVs beginning with early attempts in the 1910s and development that accelerated during World Wars I and II. The document describes the typical components of a UAV system and categories of UAVs based on range, altitude, and function, including reconnaissance, combat, logistics, and research. Examples of Indian UAV programs are provided, as well as various civilian and commercial uses of UAVs.
Power Presentation on UAVs.Basically covering all the informative topics related to UAVs.Starting from different terminology and ending up to future vision and advantages.
It is actually a fully made presentation one can directly use to present it.It contains pictures so by the use of it one can able to understand each and every line in the particular slide.
This document is a project report submitted by three students for their Bachelor of Technology degree. It outlines the design and implementation of an unmanned aerial vehicle (UAV) in the form of a quadcopter for campus surveillance. The quadcopter will house a camera and use a wireless transmission system to provide live video feed from the camera to a ground station. Sensors such as an IMU and GPS will be used to help stabilize and navigate the quadcopter. An onboard processor and flight controller using Arduino will control the quadcopter. The project aims to develop a low-cost and lightweight surveillance drone.
The document presents information about a group project on drone technology submitted by students Faisal Saleem, Ehtasham Anwar, and Imran Gulzar to their professor Mr. Taimoor Aamir. It discusses the introduction, history, types, workings, popular drones, uses, and advantages/disadvantages of drones. The types of drones discussed include the MQ-9 Reaper hunter/killer surveillance drone, DJI Phantom commercial/recreational drone, micro-UAVs, biomimetic drones, and blimps/balloons. The document also provides details on the MQ-9 Reaper drone's specifications and operations.
Robert Watson-Watt invented radar in the 1930s while working for the British government. He developed devices for detecting atmospheric discharges and locating approaching aircraft. This led to the development of radar which played a key role in Britain's defense during World War 2.
Radar systems use radio waves that are transmitted and reflected to detect objects. The components of a radar system include a transmitter, antenna, receiver, and indicator. The transmitter creates pulses that are emitted by the antenna. The receiver detects reflections and the indicator, usually a cathode ray tube, displays the results.
Air traffic control radars include Precision Approach Radar for precision landing, Airport Surveillance Radar for short range surveillance, Air Route Surveillance Radar for long
This is a report on ‘drones-an introduction&design’.In this
report I tried to give an introduction about drones or unmanned
aerial vehicles (UAVs) and some preliminary design parameters.
Introduction portion consists of drone history, technology, uses,
and the current generation of drones. Design portion includes
parameters like aerodynamics, payload, endurance, speed and
range, navigation systems and communications.
Radar and secondary radar systems use radio waves to detect objects and provide essential information to operators. Radar works by transmitting radio waves that bounce off targets and are received, allowing calculation of range and position. Secondary radar requires aircraft to carry transponders that respond to interrogations by transmitting a coded reply signal carrying additional data like identification and altitude. This improves detection range and allows transmission of emergency information.
Unmanned aerial vehicles (UAVs), commonly known as drones, have evolved significantly over time. They were first used as early as the 19th century as balloons loaded with explosives. During World War I, they were developed as aerial torpedoes. Nowadays, UAVs are widely used for both military and civilian applications. They come in various configurations like fixed-wing, rotary-wing, and hybrid designs. Key elements of a UAV system include the airframe, propulsion system, sensors, flight computer and payload such as cameras, radars or other instruments.
The content provides the evolution of the Unmanned Aerial Vehicles from the very beginning to the present.
Starting from 1849 with Balloons, the UAVs have now evolved so much with the technology and have gained a lot importance in different sectors.
SEMINAR TOPIC DRDO AEW&CS WHICH CAN REPRESENT ON MY COLLEGE .I PUT THE DATA IN THAT FROM WITH THE HELP OF INTERNET .IN THIS TOPIC I REPRESENT A FEW POINT ABOUT DRDO AEW&CS WHICH ARE IN CURRENT STATUS AND FUTURE DEVELOPMENT IN AIRBORNE EARLY WARNING MACHINE.
This document provides an overview of various radio and satellite navigation aids used in aviation, including:
1. Nondirectional radio beacons, VORs, TACAN, DME, ILS, marker beacons, and GPS satellites which provide navigation capabilities.
2. Airway and route systems like Victor airways, jet routes, and RNAV which define paths between navigation aids and waypoints for aircraft to follow.
3. Protected airspace standards for non-radar airways and routes to ensure safe separation between aircraft.
The document provides an introduction to drones, including their invention and timeline. It discusses the different types of drones, including quadcopters, GPS drones, and delivery drones. It also describes the anatomy of drones, including components like propellers, motors, flight controllers. The document outlines the working principle of drones and various flight modes. Applications of drones discussed include agriculture, sports, military, and humanitarian uses. Advantages and disadvantages of drones are presented. The document concludes with a section on the legality of drone use.
Unmanned Aerial Vehicles (UAVs) are aircrafts that fly without any humans being onboard. They are either remotely piloted, or piloted by an onboard computer. This kind of aircrafts can be used in different military missions such as surveillance, reconnaissance, battle damage assessment, communications relay, minesweeping, hazardous substances detection and radar jamming. However they can be used in other than military missions like detection of hazardous objects on train rails and investigation of infected areas. Aircrafts that are able of hovering and vertical flying can also be used for indoor missions like counter terrorist operations.
The document discusses topology control and mobility strategies for unmanned aerial vehicle (UAV) ad-hoc networks. It provides an overview of target application scenarios for UAV swarms and the motivation for maintaining connectivity in highly mobile UAV networks. Approaches for topology control from the related fields of boids flocking, potential fields, and virtual springs are reviewed. The document proposes a new approach that modifies the potential field method to consider both wireless signal strength and distance between UAVs to determine attractive and repulsive forces for topology control.
The document provides information about UMS Group, a company that provides unmanned aerial systems (UAS) and services. It describes UMS's organizational structure and leadership, various UAS products like the F-330, F-720, and R-350, key system components, and training courses. UMS offers a range of fixed-wing and VTOL UAS, along with data links, avionics, flight control systems, and ground control stations. It also discusses UMS's process for UAS business development projects.
The document discusses the design and development of quadcopter unmanned aerial vehicles (UAVs). It describes the prototypes created, including improvements made to reduce weight and increase lift. Sensors and controllers are discussed, including sensors for position, proximity, and navigation. The final prototype achieved stable hovering with a weight of 43 grams and incorporated an inertial measurement unit, ultrasonic sensors, GPS, and radio frequency transmission for control and data transmission.
This document summarizes wireless network technologies for aircraft. It discusses current issues with onboard wireless use and the need for wireless access for passengers and crew. It describes proposed network architectures that use picocells and integrate standards like GSM, UMTS, Bluetooth, and Wi-Fi. The architectures connect to satellite networks for broadband access. Examples of implemented systems are provided, like Connexion by Boeing and Aircell, which use different wireless transmission methods to satellites or cell towers. Network protocols, quality of service classes, and components like the cabin, transport, and ground segments are also outlined.
This document provides an overview of a talk given by Dirk Gorissen on UAV and robotics technology. The talk discusses the DECODE project, which aims to develop a system to help designers understand the impact of decisions made during complex aerospace system design. As a case study, the project is using UAV design for search and rescue operations. The talk outlines UAV and robot technologies, the DECODE design system, rapid manufacturing techniques like 3D printing, and future work such as a two-seas monitoring project using UAVs.
Presentation "Mobile Communication in the Aircraft Cabin" held at the Seminar "Aircraft Cabin and Cabin Systems" 22-Sep-2004 Dresden Germany at DGLR Annual Congress
(Deutsche Gesellschaft für Luft- und Raumfahrt / German Society for Aeronautics and Astronautics)
for more information see www.rudolf-appel.de/wirelesscabin/
This company presentation provides information on its profile, activities, products, and technologies. Specifically:
- It develops unmanned systems, guidance/navigation/control systems, and conducts advanced research.
- Its products include the STRIX and SIXTON unmanned aerial systems, a precision airdrop system, and autopilots.
- It focuses on technologies like guidance, navigation, control, electronics, and has partnerships for manufacturing and sales.
An Extensible Architecture for Avionics Sensor Health Assessment Using DDSSumant Tambe
Avionics Sensor Health Assessment is a sub-discipline of Integrated Vehicle Health Management (IVHM), which relates to the collection of sensor data, distributing it to diagnostics/prognostics algorithms, detecting run-time anomalies, and scheduling maintenance procedures. Real-time availability of the sensor health diagnostics for aircraft (manned or unmanned) subsystems allows pilots and operators to improve operational decisions. Therefore, avionics sensor health assessments are used extensively in the mil-aero domain. As avionics platforms consist of a variety of hardware and software components, standards such as Open System Architecture for Condition-Based Maintenance (OSA-CBM) have emerged to facilitate integration and interoperability. However, OSA-CBM is a platform-independent standard that provides little guidance for avionics sensor health monitoring, which requires onboard health assessment of airborne sensors in real-time. In this paper, we present a distributed architecture for avionics sensor health assessment using the Data Distribution Service (DDS), an Object Management Group (OMG) standard for developing loosely coupled high-performance real-time distributed systems. We use the data-centric publish/subscribe model supported by DDS for data acquisition, distribution, health monitoring, and presentation of diagnostics. We developed a normalized data model for exchanging the sensor and diagnostics information in a global data space in the system. Moreover, Extensible and Dynamic Topic Types (XTypes) specification allows incremental evolution of any subset of system components without disrupting the overall health monitoring system. We believe, the DDS standard and in particular RTI Connext DDS, is a viable technology for implementing OSA-CBM for avionics systems due to its real-time characteristics and extremely low resource requirements. RTI Connext DDS is being used in other major avionics programs, such as FACE™ and UCS. We evaluated our approach to sensor health assessment in a hardware-in-the-loop simulation of an Inertial Measurement Unit (IMU) onboard a simulated General Atomics MQ-9 Reaper UAV. Our proof-of-concept effectively demonstrates real-time health monitoring of avionics sensors using a Bayesian Network –based analysis running on an extremely low-power and lightweight processing unit.
Wireless Video Cameras offer COFDM Aerial Video System for capture and distribution of live and complete motion videos through wireless communication system.
cofdm wireless audio video transmitter, 1080 p NLOS LOS HDMI SDI 桂凤 周
This document describes a COFDM wireless audio video transmission system that can transmit 1080p HD video and audio signals either non-line-of-sight or line-of-sight. Key features include supporting HDMI or SDI input, COFDM modulation, transmitting distances up to 250km, operating frequencies between 300MHz to 4400MHz, and applications in security, military, broadcasting and transportation industries. It can transmit high quality video under fast moving conditions or with obstacles between transmitter and receiver.
A Comparison of Traditional Simulation and MSAL (6-3-2015)Bob Garrett
This document compares traditional simulation approaches to the Model-Simulation-Analysis-Looping (MSAL) approach. It provides background information on system modeling and simulation basics, including conceptual models, simulation programs, sensitivity analysis, Monte Carlo methods, and simulation optimization. It then discusses risk and uncertainty, modeling systems of systems, and the current state of modeling and simulation in systems engineering. Finally, it introduces the MSAL approach, which uses graphs, analytics, and repeated simulation loops to address the increased complexity and uncertainty in systems of systems compared to traditional approaches. The MSAL approach aims to provide benefits like improved handling of uncertainty and complexity.
The document discusses Phase I and Phase II of the Autonomous VTOL Scalable Logistics Architecture (AVSLA) project. Phase I demonstrated the feasibility of using autonomous aircraft for cargo delivery and identified areas for further research. Phase II aims to develop a system-of-systems model to further analyze delivery network topology, scheduling, and control distribution options. It will also explore expanding the system to a national scale and urban settings. Key research areas include vehicle autonomy, air traffic management integration, and understanding package delivery economics and operations.
Fixed Wing UAV Drones Market Professionally Investigated for Its Competitive ...Pete Jones
Fixed Wing UAV Drones Market is professionally analysed for the international markets including development trends, competitive landscape analysis, key regions development status and import/export consumption.
Design, Fabrication and Modification of Small VTOL UAVAkshat Srivastava
The target of the project is to design a vertical takeoff Unmanned Aerial Vehicle. The design configuration selected is a four rotor design. Preliminary calculations regarding the material selection was performed. Fabrication was carried out beginning with the frame assembly, followed by the integration of the electronic components. At the same time, the various analyses were performed in order to predict the real time performance of the Quad rotor design. Beginning with structural analysis on Catia, the structural deformation of the frame was studied; the analysis was further refined on the Ansys Workbench. Ansys workbench is an easy to use interactive interface. Following the structural analysis was the Modal Analysis that was performed to evaluate the resonant frequencies or the modes of the vibrations of the frame. Then flow simulation was performed again on the Ansys workbench using the fluent solver and CFX post processing software. This analysis was performed to study the flow behaviour around the quad rotor design. Various plots of the flow parameters were obtained and analyzed. After the assembly of all the individual components was performed, flight testing was performed. The testing was performed for a number of times, various adjustments were implemented, recalibrated several electronic components. The software was reconfigured several times to obtain the desired response from the board. The testing has resulted in minor improvements in the design.
This document summarizes research on using DVB-T signals for passive radar ship detection. DVB-T signals provide a large bandwidth and wide coverage suitable for passive radar. Preliminary experiments using a USRP software defined radio were able to detect ships up to 5 nautical miles away departing from a nearby harbor based on the Doppler frequency shifts measured. Future work aims to conduct experiments with cooperative targets and improve the system's range resolution and processing algorithms.
This document analyzes the design of a portable video transceiver system. It begins by outlining typical applications of portable video transmission like live news reporting from remote areas. It then presents the key parameters in the design of such a system, including transmitted power, path loss, foliage loss, rain attenuation, and noise power. The document develops mathematical models and formulas for each parameter. It describes field experiments conducted to measure actual path loss. Finally, it presents a block diagram of a simulation model that can optimize the design parameters to meet user requirements like communication range and video quality.
The document discusses signal selection criteria and remedies for satellite navigation systems like GPS. It covers 5 criteria: 1) acceptable received power levels with reasonable antenna patterns and ionospheric delay, remedied by choosing L-band frequency. 2) rejection of multipath signals using circular polarization. 3) meeting power spectral density constraints using spread spectrum signaling. 4) providing multiple access using code division multiple access (CDMA). 5) providing ionospheric correction using dual frequencies like L1 and L2. It provides details on GPS signal frequencies, modulation, and PRN codes.
The document discusses various methods for accessing satellites including frequency division multiplexing (FDM), time division multiplexing (TDM), and code division multiple access (CDMA). It also covers satellite microwave transmission which uses communication satellites as microwave relay stations in space to link ground-based transmitters and receivers over long distances.
Satellite communications systems allow communication between two points on Earth via satellites. A signal is transmitted from an earth station to a satellite, which then relays the signal to another earth station. Satellites provide large area coverage and can bypass terrestrial networks. They are used for voice calls, television, radio, internet access, and more. Higher frequency bands like Ku-band provide more flexibility than C-band but are more susceptible to rain fade. Modern systems use modulation techniques like QPSK and 8-PSK along with error correction coding to optimize bandwidth use on satellites.
Automated Traffic Density Detection and Speed MonitoringBharat Biyani
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Maria D'cruz_WCDMA UMTS Wireless NetworksMaria D'cruz
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1. Researchers successfully developed and demonstrated a full-optical free-space optical (FSO) communication system operating at 1550 nm capable of transmitting data at 10 Gbps over 1 km.
2. They also developed an innovative dense wavelength division multiplexing (DWDM) radio-over-FSO (RoFSO) link to transmit multiple radio frequency signals for heterogeneous wireless services.
3. Experiments were conducted to characterize atmospheric effects like turbulence on the FSO system. Measurements of the refractive index structure parameter were obtained and correlated with signal quality metrics.
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2. 1
Data link main components
GDT (Ground Data Terminal)
(Including RF Box
power amplifier, tracking, filters, diplexer,
receiver, transmitter)
ADT (Air Data Terminal)
(Receiver, Transmitter.
(Filters, LNA, Diplexer, SPDT, 2
Anetnnas)
3. Data link selection considerations
Range and environment factors (link budget,
line of sight, precipitation, etc.)
Antenna tracking mechanism
Analog system vs. Digital system
Encryption and anti jam requirements
Available frequency and bandwidth
General requirements (size, weight, input
power, computer interface, etc.)
Redundancy requirements
So many factors, I am totally lost…..
4. Range and Environment Factors
Line of sight between the GDT and the ADT.
Factors that impact line of sight are: trees,
constructions , curvature of earth and topographic
structure.
Due to curvature of earth the maximal range between
GDT and ADT depends on the UAV attitude and the
GDT height.
Ways to resolve non-line of sight cases:
Using a relay GDT on the ground, UAV or Airborne
to increase range
Use satellite communication
as a relay between UAV
and Ground station.
(Ka, Ku band)
5. Range and Environment factors
Link Budget Calculation - all the gains and losses from
GDT, through cables, antennas and free space to the ADT.
Fade Margin – the total gain remaining after adding gains
and subtracting losses in the link budget (uplink &
downlink).
The exact amount of the fade margin required for a UAV
system depends on the desired reliability of the link and
the environmental conditions.
6. Range and Environment factors
Example for Fade Margin Calculation: (Downlink ADT GDT)
ADT Antenna gain: 0dBi
ADT Video & Data Transmitter power: 50dBm
ADT cables loss: 1dB
Path loss: 150km (loss in 2.4GHz is: 143dBm)
GDT Antenna Gain: 17dBi
GDT receiver Sensitivity: -97dBm
GDT cables loss: 1dB
Fade Margin: 18dB
(0dBi+50dB-1dB – 143dB + 17dB +97dB - 1dB)
7. Antenna Tracking Mechanism
The beam width of a directional antenna is narrow.
For long range UAV (> 10km) the GDT should include
Azimuth/Elevation tracking. (using Antenna Pedestal)
Major Tracking mechanism:
Manual Tracking – manual antenna
transportation based on the input signal level
GPS tracking – using GDT GPS location and GPS
target location. (can’t work when GPS signal is
jammed)
RSSI tracking using software – automatic tracking
by determination of maximal signal power.
(spewing out multiple narrow-beam pulses in
different directions and looking for the maximal
return)
Monopulse tracking - automatic tracking, most
accurate and reliable solution. (with a single pulse,
the antenna can gather angle information)
8. Analog vs Digital
The difference between analog and digital technologies is:
Analog technology - information is translated into electric
pulses of varying amplitude.
Digital technology - information is translated into a binary
format (zero or one) where each bit is representative of two
distinct amplitudes.
9. Main advantages of a digital system
Better resilience to noise and interference
Capacity utilization(less bandwidth) –
Compresses the input video using MPEG4, H264
technics.
Mixes multiple video and data inputs in one link
Allows data manipulation using software
Encryption - better applied to digital data
Anti Jamming – spread spectrum, frequency hopping
Forward Error Correction method (improves receiver
sensitivity)
Smaller size
RF components and data processing is implemented by
software.
Combines data modulation and data processing in the
same unit
Easy integration with modern flight computers and GCS.
10. UAV Antenna - Considerations
Using Two Antenna solution ( one receiver
& one transmitter ) vs. using One Antenna
to receive and transmit applying a Diplexer.
Interference to the antenna reception
UAV structure and movements - might
require multiple antennas
UAV material type
Antenna Switching – used with multiple
antennas solution
Temperature
11. General considerations
Size & Weight
Input Current/Power – low power transmitter on a UAV
requires compensation on Antenna size on the ground to
achieve long range.
Autonomous system that can work when GPS signal is lost.
ADT – GDT range
Azimuth/Elevation Angles (GDT - ADT)
UAV Altitude
GPS location of GDT (acquire when the system is installed)
Interface with the ground station and the flight computer.
Use of Half duplex vs. Full duplex RF communication
Half duplex Transceiver (TDD) - uplink bit rate is low. Use
the available slot of the downlink to transmit uplink data
Separate frequency for receiving and transmitting
12. UGV & USV – Specific Considerations
Multipath
The arrival of a transmitted signal at a receive
antenna from multiple paths is due to reflections.
Reflections - ground, water, trees, constructions,
people, or any other obstacle .
Diversity, COFDM modulation
Tunnel Robots –
Communication through cable
Multiple antennas for relay.
13. 13
Thank you for your attention
You can reach me at:
yaron@imc-mw.co.il