GPSjärjestelmien
GPSjärjestelmien, or GPS systems in English, refers to the Global Positioning System. It is a satellite-based navigation system that provides geolocation and time information to a GPS receiver anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. The system is operated by the United States government and is freely accessible to anyone with a GPS receiver.
The GPS constellation consists of approximately 31 active satellites in medium Earth orbit. These satellites transmit
The accuracy of GPS positioning can be affected by various factors, including atmospheric conditions, satellite geometry,