Cell Phone Tracking Info – GPS Technology DetailsDiverse GPS start options have an effect on how much time is normally required to generate location. GPS Hot Start means when the GPS enabled cell phone keeps its last known location, the satellites which were in view at the time, as well as the almanac information in memory, and makes an attempt to find the same satellites and calculate a new position based upon the previous data. This is usually the quickest GPS lock but Hot Start only works if the phone is in the same general area as when the GPS was last turned off. GPS Warm Start is when the GPS enabled handset recalls its last calculated location, and almanac used, but not which satellites were in view. It resets and tries to lock onto satellite signals and calculates a new position. The GPS receiver narrows the choice of which satellites tolook for since it stored its last known position and the almanac data helps determine which satellites are in range. The Warm Start will take more time compared to Hot Start although not as long as a Cold Start. With GPS Cold Start, the device deletes all the previous data, and attempts to locate satellites and complete a GPS lock. This normally takes more time because there is no known reference data. The GPS enabled smartphone receiver must try to lock onto a satellite transmission from any available satellites. So that you can get better GPS lock times (the length of time it requires to lock onto an orbiting GPS Satellite signal) cell phone manufacturers and wireless operators introduced Assisted GPS technology. This downloads the ephemeris helping triangulate the cell phone general position. GPS Receivers will get a faster lock in exchange for a few kilobytes of data transmission. Assisted GPS, also called A-GPS or AGPS, increases the performance of standard 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 cell network to speed up finding of GPS satellites. A-GPS assists location tracking functions of smartphones (along with other connected devices) in two ways: The first way will be helping to get a more rapid “time to first fix” (TTFF). AGPS gets and stores data about satellite location using the cell network so the coordinates details does not need to be downloaded from the the satellite. The other method is by helping position cell phones when GPS signals are weak or not available. Since GPS satellite signals may be impeded by tall structures, and do not pass through building interiors well AGPS employs distance to cellular towers to compute position when GPS signals are not available. GPS Is Not The Only Method To Locate A Cell Phone In the event that satellite signals are not readily available, or precision is less important than battery life, utilizing Cell-ID is a useful alternative to GPS cell phone tracking. The location of the mobile phone may be calculated by the cellular network cell id, which pinpoints the cell tower the mobile phone is using. By knowing the position of the tower, you’ll be able to know approximately where the handset might be. However, a tower can cover a huge area, from a couple of hundred meters, in high populationdensity zones, to several kilometers in lower density areas. This is why location CellID precision is less than than GPS accuracy. Even so tracking using CellID still offers a really good alternative. Another way of determining mobile phone position is Triangulation or Mobile Location Services (MLS). Cell Tower Triangulation makes use of signal analysis data to determine the time it takes signals traveling from your smartphone to a minimum of three cell towers to estimate location. Generally speaking it is a matter of what location tracking system is readily available, along with the need for accuracy. Hybrid methods are emerging that use various techniques in tandem to provide best available location given available resources. It may be important to consider how GPS location software programs handle the data and controls mobile phone settings including options of having realtime tracking on demand, or preferring to minimize battery use and data transmitting. Generally the application determines the position with a GPS receiver and transmits the tracking data to a server through a cellular packet data connection. The data connection to the server is usually made over the internet. How often GPS samples are taken and just how frequently and by just what method the information is sent to the server impact usefulness and perhaps costs.
To help track a cell requires several primary approaches of computing cell phone location. GPS (Global Positioning System/Satellites), Triangulation, and CellID. These technologies transform smartphones into mobile monitoring devices. These systems can be seen as Network Based, Handset Based or possibly a Hybrid approach. GPS position is Handset based as it necessitates applications installed on the cell phone alongside with GPS hardware. Triangulation and CellID are Network Based because they make use of the equipment and data from the wireless provider. Hybrid systems integrate approaches to produce best use of available information and also to help make perform faster.
Mobile Phone GPS Tracker Guide
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