Getting a grasp on a few of the details regarding Cell Monitoring and Tracking Technology could be helped by a GPS Satellite guide. GPS satellites broadcast signals from space that GPS receivers utilize to determine three-dimensional location (latitude, longitude, and altitude) plus accurate time. The acronym GPS is short for Global Positioning System and is a system that is made up of 3 primary segments: Space Segment, Control Segment and User Segment.
The GPS Space Segment made up of twenty-four to thirty-two satellites that orbit the earth in medium earth orbit MEO. These types of satellites are referred to as the GPS Constellation, plus they are orbiting once every 12 hours. They are not geosynchronous, they travel at over 7,000 mph. GPS satellites are solar powered but have battery power reserve when ever they are on the dark side of the earth. They are located so that at any given time one can find at the least four satellites visible from any point on the planet. Tiny rocket boosters on each satellite keep them correctly positioned. The satellites have a lifetime of about 10 years until all their fuel runs out.
GPS Satellites aren’t communications satellites. Geostationary or communications satellites use a higher altitude found 22,300 miles above the equator. These types of satellites are used for weather forecasting, satellite TV, satellite radio and most other kinds of global communications. At exactly 22,000 miles above the equator, earth’s gravitational force and centrifugal forces are canceled and they are in balance. This is the very best location to park a communications satellite. The earth spins at about 1,000 miles per hour, and because of their high earth orbit the earth-synchronous satellites will need to move at about 7,000 mph to retain position. This is approximately the same velocity as GPS satellites, but due to the fact communications satellites are 10,000 miles further away they stay in place relative to the ground.
The GPS Control Segment is comprised of Master Control Station, an Alternate Master Control Station, and many dedicated and shared Ground Antennas and Monitor Stations that work with each other to make sure that the satellites are operating to specification and the info they send out to earth is correct.
The GPS User Segment consists of of GPS receivers represented by handsets, laptops, in-car navigation devices and hand-held tracking products and also the people that use them, along with the software applications that make them operate.