Essays about: "GNSS Signal"

Showing result 1 - 5 of 22 essays containing the words GNSS Signal.

  1. 1. Spatial Variability in the Ionosphere and GNSS Signal Delays in the L-band: A Direct Comparison of In-Situ Satellite- and Swepos-Data

    University essay from Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

    Author : Oscar Suneson; [2021]
    Keywords : fysik; jonosfären; GNSS; GPS; astrofysik; navigationssystem; mätteknik;

    Abstract : It has been shown that ionospheric irregularities can disturb our GNSS (Global Navigation Satellite System) communication. This disturbance is caused by scintillation of the radio signals when they pass through the ionosphere, leading to lock-on difficulties or in worst case, a loss of position for the GNSS-receiver. READ MORE

  2. 2. Development of Software Library for Open Source GNSS Receiver with Focus on Physical Layer Signal Processing

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Vitalijs Kudrins; [2021]
    Keywords : GNSS; GPS; Galileo; GNSS Signal; Rust library; Engelska; English;

    Abstract : In order to directly interface with signal broadcast by global navigation satellite systems (GNSS) – such as GPS or Galileo – for the purpose of calculating location, a potential user is required to extract great amount of information from interface control documents (ICD) as well as build custom software tools to process this information. This is time consuming and inefficient. READ MORE

  3. 3. Development of GNSS Type Processing for the Characterization of the Mobile Propagation Channel

    University essay from KTH/Fastigheter och byggande

    Author : Adrien Bardou; [2021]
    Keywords : LMS Channel; Multi-paths; GNSS; SCHUN; Simulation; LMS-kanal; flerv¨agar; GNSS; SCHUN; Simulering;

    Abstract : Mobile communication systems are undergoing significant development on increasingly wide frequency bands (5G in particular). To support this development, a detailed characterization of the propagation of electromagnetic waves in L, S and C band between a station (satellite, airborne or ground) and a mobile platform is necessary to analyze and model the phenomena that have a decisive impact on the performance, availability and operability of systems. READ MORE

  4. 4. A Comparison of Smartphone GPSL1 and Galileo E1-B/C Spoofing Resilience

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Torbjörn Leksell; [2021]
    Keywords : GNSS; Spoofing; GPS; Galileo; Smartphone; GPU; Signal Simulation; GNSS; Förfalskning; GPS; Galileo; Smarttelefon; GPU; Signalsimulator;

    Abstract : Location-based services have grown in importance as smartphones, and location-based applications have become an integral part of everyday life. While Global Navigation Satellite Systems (GNSSs) provide the most accurate position determination, open service GNSS signals remain unprotected and susceptible to spoofing attacks. READ MORE

  5. 5. Hybrid Positioning Solution Using 5G and GNSS

    University essay from Linköpings universitet/Reglerteknik; Linköpings universitet/Reglerteknik

    Author : Carl Rydholm; William Pommer; [2021]
    Keywords : 5G; Positioning; GNSS; Sensor Fusion; Signal Processing;

    Abstract : The importance of accurate position estimation is becoming more necessary as industries and society increasingly rely on autonomous or wireless devices while the capabilities of existing positioning solutions fail to meet the demanding requirements. This situation has provided opportunities for wireless positioning techniques with the rollout of 5G which has led to many enhancements to the network protocol related to positioning. READ MORE