Global positioning system (GPS) receiver held in a hand. 24 GPS satellites trace precision orbits around the Earth. Each satellite transmits radio signals that can be detected by this receiver. Three signals allow calculation of latitude and longitude. A fourth signal allows altitude calculations. Transmission of time data allows the calculation of local time. This is a Magellan GPS 315 receiver being used in the Canadian Arctic | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Riedl, Martin |
Bildgröße: | 3095 px × 4681 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |