Sökning: "GALILEO"

Visar resultat 21 - 25 av 39 uppsatser innehållade ordet GALILEO.

  1. 21. A Mobile Platform for Measuring Air Pollution in Cities using Gas Sensors

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

    Författare :Mikael Mölder; [2018]
    Nyckelord :Air quality; Sensors; Location Based Services; Galileo; Android application; Raspberry Pi; Luftkvalitet; Sensorer; Platsbaserade tjänster; Galileo; Android applikation; Raspberry Pi;

    Sammanfattning : Although air pollution is one of the largest threats to human health, the data available to the public is often sparse and not very accurate nor updated. For example, there exists only about 5-10 air quality measuring points across the city of Stockholm. LÄS MER

  3. 22. New Generation 4-Channel GNSS Receiver : Design, Production, and Testing

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Guillem Antoja Lleonart; [2018]
    Nyckelord :gnss; gps; galileo; glonass; beidou; constellation; receiver; new generation; 4-channel; design; pcb; shield; front end; nt1065; biastee; bias t; bias tee; sma; saw filter; fpga; microzed; microheader; digital; analog; lvds; single end; agc; selector;

    Sammanfattning : Due to the current research needs and the lack of commercial multi-channel, multi-constellation GNSS receivers, a two-board solution has been developed so it can be mated with and take advantage of the processing power of the FPGA board branded as MicroZed. In order to achieve the proposed goals, an initial phase for assessing and updating the older design, building, and testing of SiGe modules (including both the electronics and casings) has been carried out. LÄS MER

  4. 23. Crowdsourcing GNSS Jamming Detection and Localization

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Luka Strizic; [2017]
    Nyckelord :gnss; gps; galileo; glonass; beidou; crowdsourcing; smartphones; android; e911; j911; jamming; jammer; detection; localization; pdoa; tdoa;

    Sammanfattning : Global Navigation Satellite Systems (GNSS) have found wide adoption in various applications, be they military, civilian or commercial. The susceptibility of GNSS to radio-frequency interference can, thus, be very disruptive, even for emergency services, therefore threatening people's lives. LÄS MER

  5. 24. Fast-forward the Sedimentation of Solid Particles in Protoplanetary Disks

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Eric Andersson; [2017]
    Nyckelord :protoplanetary disk sedimentation simulation particle-mesh adaptive particles; Physics and Astronomy;

    Sammanfattning : Numerical simulations have become an essential tool for studying particle-gas systems. One such system is the protoplanetary disk consisting of vast number of solid particles interacting with the surrounding gas. LÄS MER

  7. 25. Practical analysis of the Precision Time Protocol under different types of system load

    Kandidat-uppsats, KTH/Skolan för datavetenskap och kommunikation (CSC)

    Författare :Emil Gedda; Anders Eriksson; [2017]
    Nyckelord :ptp; ieee1588; accuracy; precision; time synchronization; clocks; stability; system load; real time system;

    Sammanfattning : The existence of distributed real-time systems calls for protocols for high accuracy time synchronization between devices. One such protocol, the Precision Time Protocol (PTP) reaches sub microsecond synchronization precision. PTP can be implemented both in hardware and software. LÄS MER