Sökning: "Ephemeris"

Hittade 5 uppsatser innehållade ordet Ephemeris.

1. 1. LEO Satellite Connectivity for flying vehicles

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

   Författare :Jinxuan Chen; [2023]
   Nyckelord :LEO satellite network; satellite connectivity strategy; Nash-SAC; flying vehicles; LEO:s satellitnät; Strategi för satellitanslutning; Nash-SAC; flygande fordon;

   Sammanfattning : Compared with the terrestrial network (TN), which can only support limited covered areas, satellite communication (SC) can provide global coverage and high survivability in case of an emergency like an earthquake. Especially low-earth orbit (LEO) satellites, as a promising technology, which is integral to achieving the goal of global seamless coverage and reliable communication, catering to 6G’s communication requirements. LÄS MER

3. 2. Utvärdering av BeiDou vid statisk deformationsövervakning : En fallstudie på Gävle flygplats

   Kandidat-uppsats, Högskolan i Gävle/Samhällsbyggnad

   Författare :Andreas Berglund; Alexander Breisch; [2020]
   Nyckelord :GNSS; static measurements; BeiDou; deformation monitoring; GNSS; statisk mätning; BeiDou; deformationsövervakning;

   Sammanfattning : Global Navigation Satellite System (GNSS) is nowadays a well-established and popular choice for various survey missions. Earlier studies indicate that BeiDou in combination with Global Positioning System (GPS), Globalnaya Navigatsionnaya Sputnikovaya Sistema (GLONASS) and Galileo contributes to a lower uncertainty in 3D. LÄS MER

4. 3. Image simulations of the mission Martian Moons eXploration

   Master-uppsats, KTH/Rymdteknik

   Författare :Romain Domagala; [2020]
   Nyckelord :;

   Sammanfattning : Martian Moons eXploration is a JAXA-lead mission aiming at exploring the moons of Mars, Phobos and Deimos. The hyperspectral infrared camera provided by France should perform global mapping of Phobos at high resolution in order to characterize surface composition and therefore help determine the origins of the moons. LÄS MER

5. 4. GNSS undersökning : För bättre precision i smartphones

   Kandidat-uppsats, Mittuniversitetet/Institutionen för informationssystem och –teknologi

   Författare :Elias Fredin; [2019]
   Nyckelord :Trilateration; Pseudorange; Satellites; Java; Android; Server; Ephemeris; GALILEO; GPS; Satellite Positioning; Trilateration; Pseudorange; Satelliter; Java; Android; Server; Ephemeris; GALILEO; GPS; Satellitpositionering;

   Sammanfattning : To be able to receive a position from a smartphone user is very valuable. Wit- hout this many applications would not work at all. For many applications the existing position libraries are not good enough, for example augmented reality applications which requires millimeter precision for a good experience. LÄS MER

7. 5. GPS Precise Point PositioningAn Investigation in Reachable Accuracy

   Master-uppsats, KTH/Geodesi och satellitpositionering

   Författare :Erik Trehn; [2006]
   Nyckelord :;

   Sammanfattning : Accurate positioning is very important in many various applications. Today one of the mostused methods for this is DGPS, i.e. relative positioning. LÄS MER