Sökning: "EGNOS"

Hittade 2 uppsatser innehållade ordet EGNOS.

1. 1. Evaluation and analysis of GPS, EGNOS and UTC timescaleconnections

   D-uppsats, Luleå tekniska universitet/Space Science, Kiruna

   Författare :Dmitry Sidorov; [2009]
   Nyckelord :Space; navigation; satellites; performance; time function; time; GPS; GLONASS; EGNOS; EGNOS Network Time; ENT; GPST; UTC; UTC OP ; UTC IT ; UTC k ; OPMT; IENG; IGS; EGNOS Performance Observatory; EPO; CNES; positioning; velocity; time; geostationary; user level; ENTuser; RIMS; clocks; offsets; accuracy; synchronization; leap seconds; broadcast messages; MT12; message type 12; CGGTTS; hydrogen maser; caesium; atomic clocks; PRN; MJD; standard deviation; observation;

   Sammanfattning : Apart from augmenting existing satellite navigation services, the goal ofEuropean Geostationary Navigation Overlay System (EGNOS) is to provide theEGNOS user with a source of accurate time and its reference to UTC. Theobjective of this project was to develop a method of evaluating thedifference between EGNOS Network time (ENT) and independent estimation of ENT at user level in locations where EGNOS corrections are valid. LÄS MER

3. 2. A software implemented receiver for satellite based augmentation systems: an enhancement to global navigation satellite systems

   Y-uppsats, Luleå tekniska universitet/Systemteknik/EISLAB

   Författare :Henrik Ripa; Mikael Larsson; [2005]
   Nyckelord :EGNOS; WAAS; MSAS; SBAS; GPS; GNSS;

   Sammanfattning : The global navigation satellite system GPS (Global Positioning System) offers a position accuracy of about 10-15 meters today. However, this is not enough for some applications such as navigating ships through narrow channels. Furthermore, GPS does not provide any integrity of the system (a maximum error bound of the position). LÄS MER