Technology Intended for Emergency Response Can Be Employed for Tracking Your Kids

To help adhere to Federal Communications Commission guidelines, cell phone companies are required to be in a position to supply authorities with cell phone latitude and longitude to an precision of 50 to 300 meters. Cell Tower Triangulation does not always meet this condition. For evaluation, commercially available GPS systems can achieve precision right down to 3-10m. This relies on several factors, as GPS signals tend to be very weak and are impacted by many environmental factors. With Mobile Location Services (MLS), the GSM cellular network provider utilizes triangulation algorithms 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 impacted by the same issues as GPS in the sense of the barriers impeding signal quality 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 receivers, whether within a smartphone, or perhaps a specific Portable gps tracking device, estimate location by precisely timing the signals transmitted by GPS satellites. This information consists of the time the message was sent, specific orbital data (formally referred to as the ephemeris), as well as the basic system state and estimated orbits of all GPS satellites (formally referenced as the almanac). GPS receivers sometimes take a long time to become ready to use after it’s turned on because it must acquire some basic information in addition to capturing GPS satellite signals. This slow start is sometimes caused if the GPS smartphone has been turned off for days or weeks, or has been moved a significant distance while turned off 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 capture signals and compute initial location faster.

As a way to have better GPS lock times cell phone manufacturers and wireless providers introduced Assisted GPS technology. This downloads the ephemeris and helps triangulate the handset basic location. GPS Receivers can get a quicker lock at the expense of a few kilobytes of data transmission.

Assisted GPS, also referred to as A-GPS or AGPS, boosts the performance of normal GPS in mobile phones connected to the cell network. In the US Sprint, Nextel, Verizon Wireless, and Alltel all use AGPS. Which is a means of utilizing the cell network to speed up finding of GPS satellites. A-GPS assists location tracking functions of mobile phones (as well as other related devices) in a couple of ways:

One way is by helping to obtain a more rapid “time to first fix” (TTFF). AGPS acquires and archives information about satellite position using the cellular network so the location information does not need to be downloaded via the satellite.

Another way is by assisting position devices 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 A-GPS utilizes proximity to cellular towers to compute position when GPS signals are not readily available.

When satellite signals are not obtainable, or accuracy is less important than battery life, utilizing Cell-ID is an useful alternative to GPS mobile phone tracking. The location of the handset can be computed by the cell network cell id, which pinpoints the cell tower the cell phone is connected to. By knowing the position of the tower, you’ll be able to know roughly the place that the mobile phone might be. However, a tower can cover a massive area, from a couple of hundred meters, in higher populationdensity locations, to a few miles in lower density areas. This is the reason location CellID precision is lower than GPS accuracy. Having said that tracking from CellID still presents quite a good substitute.

Another method of determining smartphone position is Triangulation or Mobile Location Services (MLS). Cell Tower Triangulation makes use of signal analysis data to calculate the time it takes signals traveling from the smartphone to no less than three cell towers to determine location.

GPS tracking, mobile GPS and cell phone tracking tools are drawing focus from potential customers, cellular phone companies and software makers. Track Cell Phone GPS and How to Spy. The up-to-date smartphones include GPS location features to track mobile phone position.