Sökning: "beacons"

Visar resultat 11 - 15 av 46 uppsatser innehållade ordet beacons.

1. 11. Efficient, Scalable and Secure Vehicular Communication System : An Experimental Study

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Shubhanker Singh; [2020]
   Nyckelord :Vehicular Public-Key Infrastructure VPKI ; Vehicular Communication VC ; Beacon; Pseudonymous Certificate PC ; TESLA; Signature Verification; Cooperative Verification; Fordonsinfrastruktur med allmän nyckel; Fordonskommunikation; Beacon; Pseudonymt Certifikat PC ; TESLA; Signatur Verifiering; Kooperativ Verifiering;

   Sammanfattning : Awareness of vehicles’ surrounding conditions is important in today’s intelligent transportation system. A wide range of effort has been put in to deploy Vehicular Communication (VC) systems to make driving conditions safer and more efficient. Vehicles are aware of their surroundings with the help of authenticated safety beacons in VC systems. LÄS MER

3. 12. A Simulation Study on the Performance Comparison of the V2X Communication Systems: ITS-G5 and C-V2X

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Aman Kumar Gulia; [2020]
   Nyckelord :;

   Sammanfattning : Personlig rörlighet och fordonstransportsystem genomgår en förskjutning mot mer reaktiv och intelligent transportinfrastruktur. Ett brett spektrum av applikationer och användningsfall har dykt upp i fordonsmiljön underlättad av olika trådlösa kommunikationssystem. LÄS MER

4. 13. Multilateration in Direct ShortRange Communications Networks : Utilising Basic Safety Messages and Received Signal Strength Ranging

   Kandidat-uppsats, Linnéuniversitetet/Institutionen för datavetenskap och medieteknik (DM)

   Författare :Andrew Galbraith; [2020]
   Nyckelord :DSRC; trilateration; multilateration; RSS; V2X;

   Sammanfattning : Traditional satellite positioning systems have limited resolution and have proved inaccuratein areas such as urban canyons where signals are subject to bounce phenomena or indeed may be entirely unavailable. An alternative method of positioning is that of tri/multilateration, which uses known positions and distances from beacon points to locate a receiver. LÄS MER

5. 14. A Cost-Efficient Bluetooth Low Energy Based Indoor Positioning System for IoT Applications

   Master-uppsats, Linköpings universitet/Institutionen för datavetenskap

   Författare :Sanjana Vupparige Vijaykumar; [2019]
   Nyckelord :Indoor positioning system; Internet of Things; Bluetooth Low Energy technology; RSSI; fingerprinting; multilateration.;

   Sammanfattning : The indoor positioning system is a series of networking systems used to monitor/locate objects at indoor area as opposed that of GPS which does the same at outdoor. The increase in the popularity of the Internet of Things made the demand for Bluetooth Low Energy technology more and more essential due to their compatibility in the smartphones which makes it to access easier. LÄS MER

7. 15. Design of a UAV-based radio receiver for avalanche beacon detection using software defined radio and signal processing

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och System

   Författare :Richard Hedlund; [2019]
   Nyckelord :Signal processing; Software Defined Radio; Avalanche; Beacon; Antenna; SDR; DSP; Signalbehandling; Mjuvarudefinierad Radio; Lavin; Lavinsändare; Antenn; SDR; DSP;

   Sammanfattning : A fully functional proof of concept radio receiver for detecting avalanche beacons atthe frequency 457 kHz was constructed in the work of this master thesis. The radioreceiver is intended to be mounted on an unmanned aerial vehicle (UAV or drone)and used to aid the mountain rescue teams by reducing the rescue time in findingavalanche victims carrying a transmitting beacon. LÄS MER