GPStietojen
GPStietojen, or GPS data, are measurements produced by a GPS receiver that enable determination of geographic position, velocity and time. Typical data elements include latitude, longitude and optionally altitude, a timestamp in Coordinated Universal Time, and derived values such as speed and course. Quality metrics recorded with GPS data can include the number of satellites in view, dilution of precision (DOP) and signal quality indicators.
GPS data can be transmitted in standard formats such as NMEA 0183 sentences (for example GGA, RMC,
Applications of GPStietojen include vehicle navigation and fleet management, mapping and surveying, geotagging of photos and
Limitations of GPS data arise from signal obstructions, multipath effects, atmospheric delays, and satellite geometry, especially