GPS tracking, cell phone GPS and mobile phone track software packages are unquestionably attracting attention from potential buyers, cell phone businesses and software developers. The most popular smartphones provide GPS locator features to track phone location.
In order to comply with Federal Communications Commission guidelines, cell phone companies are required to be able to furnish authorities with cell phone latitude and longitude to an precision of 50 to 300 meters. Cell Tower Triangulation fails to always satisfy this condition. For comparison, commercially accessible GPS systems will be able to get precision right down to less than 10 meters. This varies according to a lot of factors, as GPS signals are often rather weak and are disturbed by numerous environmental factors. With Mobile Location Services (MLS), the GSM cell network provider uses triangulation algorithms to determine the position of the handset, its accuracy is proven to be less than than that of GPS. MLS is also impacted by factors similar to GPS in the sense of the barriers impeding signal strength and the density of GSM towers to assist in the triangulation calculation. In remote areas location accuracy may be off as much as a mile.
GPS Hot Start describes when the GPS enabled handset keeps its last identified location, the satellites which were in range at the time, as well as the almanac data in memory, and makes an attempt to obtain the same satellites and determine a 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 switched off. GPS Warm Start refers to when the GPS enabled handset remembers its last known location, and almanac used, but not which satellites were in range. It performs a reset and makes an attempt to find satellite signals and computes a fresh location. The GPS receiver has a general idea of which satellites tolook for since it kept its last known position and the almanac data helps identify which satellites are within view. The Warm Start will need longer than the Hot Start although not as much as a Cold Start. With GPS Cold Start, the device dumps all the previous information, and attempts to find satellites and attain a GPS lock. This normally takes the longest since there is no known reference information. The GPS enabled mobile phone receiver must attempt to lock onto a satellite signal from any available satellites.
In order to have better GPS lock times cellular phone manufacturers and network operators created Assisted GPS technology. It downloads the ephemeris and helps triangulate the cell phone general location. GPS Receivers can get a faster lock in exchange for a few kilobytes of data transmission. Assisted GPS, also referred to as A-GPS or AGPS, improves the performance of standard GPS in devices connected to the cell network. In the US Sprint, Nextel, Verizon Wireless, and Alltel all use Assisted GPS. Which is a method of utilizing the cell network to accelerate finding of GPS satellites.
A-GPS improves location tracking performance of smartphones (as well as other related devices) in two ways:
The first method will be assisting to acquire a more rapid “time to first fix” (TTFF). AGPS acquires and stores information in relation to the location of satellites utilizing the cellular network and so the position information does not need to be downloaded from the the satellite.
The second process is by assisting locate devices when GPS signals are weak or blocked. Because GPS satellite signals may be interfered with by tall buildings, and do not go through building interiors well A-GPS uses distance to cellular towers to calculate position when GPS signals are not accessible.
If satellite signals are not readily available, or accuracy is less important than life of the battery, employing Cell-ID is a good alternative to GPS mobile phone tracking. The location of the smartphone can be approximated by the cellular network cell id, which identifies the cell tower the cell phone is using. By having the location of this tower, you may know approximately where the cell phone might be. But, a tower can cover an enormous area, from a couple of hundred meters, in higher populationdensity zones, to a few miles in lower density zones. For this reason location CellID precision is lower than GPS accuracy. Even so location using CellID still delivers a really viable substitute.
Another way of calculating smartphone location is Triangulation or Mobile Location Services (MLS). Cell Tower Triangulation employs signal analysis data to compute the time it takes signals traveling from your smartphone to at least three cell towers to judge location.
Smartphone GPS Tracker Info
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