There are 30+ GPS satellites deployed on six orbits around the earth at an altitude of approximately 20,000 Km. Space segment – This segment consists of GPS navigation satellites.GPS receivers are also used in automobiles, for tracking commerce and in several tracking applications like in drones and UAVs. These tiny devices provide geolocation, time, and velocity data for no cost and are now found in most of the smartphones. The latest GPS receivers are ultra-compact and accurate than ever. All GPS receivers essentially are capable of providing their geolocation, UTC time, and velocity information. There are many kinds of GPS receivers with different capabilities. By calculating its distance from four or more satellites, a GPS receiver can find out its position in latitude and longitude anywhere on earth. These satellites continuously send signals over dedicated RF frequencies that a GPS receiver can listen to. GPS is a network of 30+ Medium Earth Orbit (MEO) satellites. The GPS system is owned by the United States government and is maintained by the United States Space Force. The latest GPS receivers provide geolocation with an accuracy of 30 centimeters. GPS is operational since 1978 and globally available since 1994. It is one of the Global Navigation Satellite Systems (GNSS) that provides geolocation, time, and velocity information. The Global Positioning System (GPS) is the most widely used satellite navigation system around the world.
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