Track Phone Systems Are Very Advanced

GPS tracking, cell phone GPS and cell phone tracking tools are really getting a lot of focus from individuals, phone companies and software coders. The hottest mobiles provide GPS position functionality to track cellphone position.

To adhere to Federal Communications Commission rules, cellular phone companies have to be in a position to furnish authorities with cell phone latitude and longitude to an precision of 50 to 300 meters. Cell Tower Triangulation will not always satisfy this requirement. By way of comparison, commercially available GPS systems can certainly obtain precision down to 3-10m. This varies according to several factors, as GPS signals tend to be really weak and they are influenced by numerous factors. With Mobile Location Services (MLS), the GSM cell network provider uses triangulation techniques to try to pinpoint the position of the mobile phone, its accuracy is proven to be much worse than that of GPS. MLS is also affected by factors similar to GPS in the sense of the interference impeding signal strength and the density of GSM towers to help in the triangulation calculation. In remote areas position accuracy may be off as much as a mile.

GPS receivers, no matter if inside a cell phone, or perhaps a dedicated Portable gps tracking device, calculate specific location through accurately timing the signals transferred by GPS satellites. This information contains the moment the message was sent, exact orbital data (formally referenced as the ephemeris), as well as the general system condition and calculated orbits of all GPS satellites (formally referred to as the almanac). GPS receivers sometimes take a long time to become ready to navigate after being turned on because it must acquire some basic information in addition to capturing GPS satellite signals. This slow start can be caused if the GPS cell phone has been unused for days or weeks, or has been transported a far distance while unused for. The GPS must update its almanac and ephemeris data and store it in memory. The GPS almanac is a set of data that every GPS satellite transmits. When a GPS receiver has current almanac data in memory, it can acquire satellite signals and compute initial location more quickly.

To be able to have improved GPS lock times cellphone manufacturers and system operators introduced Assisted GPS technology. This downloads the ephemeris helping triangulate the device general position. GPS Receivers will get a faster lock at the expense of a few kilobytes of data transmission.

Assisted GPS, also referred to as A-GPS or AGPS, enhances the performance of normal GPS in smartphones connected to the cellular network. In the US Sprint, Nextel, Verizon Wireless, and Alltel all use AGPS. Which is a means of using the cellular network to accelerate acquisition of GPS satellites. A-GPS improves location tracking functions of smartphones (and also other connected devices) in two ways:

One method will be helping to acquire a faster “time to first fix” (TTFF). Assisted GPS acquires and archives information about the location of satellites via the cellular network and so the coordinates information does not need to be downloaded from the the satellite.

The other process is by assisting position smartphones when GPS signals are weak or not available. Because GPS satellite signals may be interfered with by tall structures, and do not penetrate building interiors well A-GPS uses proximity to cellular towers to calculate position when GPS signals are not available.

In the event that satellite signals are not accessible, or precision is less important than battery life, applying Cell-ID is a viable alternative to GPS smartphone location. The location of the handset may be estimated by the cellular network cell id, that recognizes the cell tower the mobile phone is connected to. By knowing the position of the tower, you may know roughly the location where the cell phone will be. However, a tower can cover a massive area, from a few hundred meters, in higher populationdensity areas, to several kilometers in lower density areas. This is why location CellID accuracy is lower than GPS accuracy. Nonetheless location from CellID still can provide a really helpful alternative.

Another method of determining cell phone location is Triangulation or Mobile Location Services (MLS). Cell Tower Triangulation uses signal analysis data to compute the time it takes signals to travel from your cell phone to a minimum of three cell towers to judge position.

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