GPS tracking, cell phone GPS and cell phone GPS track software are gaining notice from consumers, phone companies and application designers. The most up-to-date mobiles have GPS position attributes to track phone position.
To help abide by Federal Communications Commission rules, cell phone companies have to be able to supply authorities with cell phone latitude and longitude to an precision of 50 to 300 meters. Cell Tower Triangulation doesn’t always satisfy this requirement. By way of comparison, commercially available GPS systems are able to realize precision down to 3-10m. This varies according to several factors, as GPS signals tend to be pretty weak and they are influenced by many variables. With Mobile Location Services (MLS), the GSM cell network provider uses triangulation algorithms to try to pinpoint the location of the mobile phone, its accuracy is proven to be much worse than that of GPS. MLS is further impacted by the same issues as GPS in the sense of the interference impeding signal quality and the density of GSM towers to assist in the triangulation effort. In remote areas location accuracy may be off as much as a mile.
GPS Hot Start is whenever the GPS enabled cell phone remembers its last calculated location, the satellites that had been in range before, as well as the almanac information in memory, and tries to lock onto the same satellites and compute a brand new position based upon the previous data. This is usually the quickest GPS lock but Hot Start only works if the phone is generally in the same location as when the GPS was last turned off. GPS Warm Start refers to when the GPS enabled handset remembers its last known position, and almanac used, but not which satellites were in view. It resets and makes an attempt to lock onto satellite signals and computes a fresh position. The GPS receiver narrows the choice of which satellites tolook for since it saved its last known location and also the almanac data helps identify which satellites are visible in the sky. The Warm Start will need more time than the Hot Start but not as much as a Cold Start. With GPS Cold Start, the device dumps all the previous information, and tries to find satellites and obtain a GPS lock. This normally takes longer than other methods since there is no known reference information. The GPS enabled cell phone receiver must attempt to lock onto a satellite transmission from any accessible satellites.
As a way to have better GPS lock times cellphone manufacturers and wireless operators created Assisted GPS technology. It downloads the ephemeris helping triangulate the cell phone basic location. GPS Receivers can get a faster lock in return for a few kilobytes of data transmission. Assisted GPS, also referred to as A-GPS or AGPS, increases the performance of normal GPS in mobile phones connected to the cell network. In America Sprint, Nextel, Verizon Wireless, and Alltel all use AGPS. This is a means of utilizing the cell network to accelerate acquisition of GPS satellites.
A-GPS assists location tracking functions of smartphones (and also other related devices) in two ways:
The first way is by assisting to get a faster “time to first fix” (TTFF). A-GPS acquires and stores information in relation to satellite position via the cellular network and so the coordinates details does not need to be downloaded from the the satellite.
The other process is by helping position smartphones when GPS signals are weak or impeded. Because GPS satellite signals may be impeded by tall structures, and do not penetrate building interiors well Assisted GPS utilizes distance to cellular towers to estimate location when GPS signals are not obtainable.
If satellite signals are not accessible, or precision is less important than life of the battery, using Cell-ID is a good alternative to GPS mobile phone tracking. The position of the smartphone might be determined by the cell network cell id, that recognizes the cell tower the phone is connected to. By having the location of this tower, you may know approximately the place that the smartphone is. However, a tower can cover a large area, from a couple of hundred meters, in high populationdensity zones, to a few kilometers in lower density regions. This is why location CellID precision is lower than GPS accuracy. Nonetheless location from CellID still provides a truly useful alternative.
Another method of formulating handset position is Triangulation or Mobile Location Services (MLS). Cell Tower Triangulation employs signal analysis data to determine the time it takes signals traveling from your cellphone to no less than three cell towers to judge location.
Options for Mobile Phone Phone GPS Tracking
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