They also help us find lost items and keep tabs on loved ones without hovering. One of the great things about GPS trackers is they encourage independence in people who might feel vulnerable without a safety net. If the device uses “assisted GPS” technology, it also uses a SIM card to connect to cellular networks-and those aren’t global. You don’t have to stay in the US to use GPS-enabled devices-GPS offers worldwide coverage, as do GLONASS, BeiDou, and Galileo.īut that doesn’t mean every single GPS-enabled device works abroad. Russia: GLONASS (24 satellites, global coverage).Japan: QZSS (4 satellites, regional coverage).India: NavIC (8 satellites, regional coverage).EU: Galileo (30 satellites, global coverage).China: BeiDou (35 satellites, global coverage).Each country has its own acronym or nickname for its satellite constellation: 1 Russia, China, India, Japan, and the European Union are the only other countries/entities with their own GNSS-undoubtedly because it costs a lot of money to send satellites into space. A few other countries or entities have their own versions of GPS-collectively called Global Navigation Satellite Systems (GNSS). Originally developed for military purposes during the Cold War, the phrase GPS refers only to 31 satellites operated by the US.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |