Throughout this discussion consider that there is a fundamental difference between mobile phone GPS Tracking and Navigation. GPS phone tracking is normally related to a third-party maintaining records of either real-time or historical mobile phone position, while Navigation deals with the mobile phone user determining how to get from point A to point B. Just because a mobile phone has GPS doesn?t mean that it can easily be used as a navigation device. Just like phone tracking, navigation requires third-party software.
A lot of the discussion surrounding GPS tracking, cell phone GPS and mobile phone tracker software could be helped by a GPS Satellite primer.
GPS satellites broadcast signals from space that GPS receivers utilize to provide three-dimensional location (latitude, longitude, and altitude) plus precise time. GPS is an acronym for Global Positioning System and is a system that is composed of 3 primary segments: Space Segment, Control Segment and User Segment.
The GPS Space Segment is comprised of twenty-four to thirty-two satellites that orbit the earth at a height of about 12,000 miles. These satellites are also known as as the GPS Constellation, and they make an orbit once every 12 hours. They are not geosynchronous, they travel at over 7,000 mph. GPS satellites are solar powered but have battery backup for when they are in the earth?s shadow. They are placed so that there are at least 4 satellites ?visible? from any point on earth. Small rocket boosters on each satellite keep them properly positioned. The satellites last about ten years until all their fuel is exhausted.
GPS Satellites are not communications satellites. Geostationary or communications satellites are parked in space 22,300 miles above the equator. These satellites are used for weather forecasting, satellite TV, satellite radio and most other types of global communications. At exactly 22,000 miles above the equator, the earth’s gravitational force and centrifugal forces are offset and are in equilibrium. This is the best location to position a communications satellite. The earth rotates at about 1,000 miles an hour, and because of their high earth orbit the earth-synchronous satellites need to move at about 7,000 mph to keep position. This is approximately the same speed as GPS satellites, but since communications satellites are 10,000 miles further away they stay in place relative to the earth.
The GPS Control Segment is comprised of Master Control Station, an Alternate Master Control Station, and a host of dedicated and shared Ground Antennas and Monitor Stations that work together to make sure the satellites are working to specification and the information they beam down to earth is accurate.
The GPS User Segment is composed of of GPS receivers taking the shape of mobiles and , laptops, in-car navigation devices and hand-held tracking units along with the people that use them, and the software applications that make them function.
GPS receivers calculate position by precisely timing the signals sent by GPS satellites. This information includes the time the message was transmitted, precise orbital information (the ephemeris), and the general system health and rough orbits of all GPS satellites (the almanac).
In the event that satellite signals are not accessible, or accuracy is less important than life of the battery, utilizing Cell-ID is a viable substitute to GPS cell phone location. The location of the device may be calculated by the cell network cell id, that recognizes the cell tower the mobile phone is connected to. By understanding the position of the tower, you may know approximately the spot where the mobile phone is. Nonetheless, a tower can cover a huge area, from a couple of hundred meters, in high populationdensity zones, to several miles in lower density zones. For this reason location CellID precision is lower than GPS accuracy. Having said that monitoring from CellID still delivers quite a handy alternative.
Mobile Phone GPS Tracking Help
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