Systems Formulated for Emergency Response Can Be Utilised for Tracking Your Kids. GPS tracking, mobile GPS and mobile phone GPS track tools are undoubtedly getting a lot of notice from individuals, cellular telephone businesses and application coders. The hottest smartphones provide GPS location attributes to track cell phone position.
In order to abide by Federal Communications Commission guidelines, cellular phone companies are required to be in a position to provide authorities with cell phone latitude and longitude to an accuracy of 50 to 300 meters. Cell Tower Triangulation will not always meet this condition. By way of evaluation, commercially available GPS systems are able to achieve precision down to less than 10 meters. This hinges on several factors, as GPS signals tend to be pretty weak and are disturbed by many variables. With Mobile Location Services (MLS), the GSM cellular network provider uses triangulation algorithms to calculate the location of the device, 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 affecting 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 describes when the GPS enabled handset retains its last known position, the satellites that had been in view at the time, as well as the almanac information in memory, and attempts to lock onto the same satellites and determine a new position based upon the previous information. 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 switched off. GPS Warm Start is the term for when the GPS enabled mobile phone keeps its last calculated location, and almanac used, but not which satellites were in range. It resets and makes an attempt to obtain satellite signals and computes a whole new location. The GPS receiver has a general idea of which satellites tolook for since it stored its last known position and the almanac data helps identify which satellites are within view. The Warm Start will take more time than the Hot Start although not as long as a Cold Start. With GPS Cold Start, the device deletes all the previous information, and attempts to locate satellites and obtain a GPS lock. This usually takes longer than other methods because there is no known reference information. The GPS enabled smartphone receiver has to try to lock onto a satellite transmission from any available satellites.
So that you can have improved GPS lock times cellular phone manufacturers and wireless providers created Assisted GPS technology. This downloads the ephemeris helping triangulate the cell phone basic position. GPS Receivers can get a quicker lock in return for a few kilobytes of data transmission. Assisted GPS, also known as A-GPS or AGPS, improves the performance of normal GPS in handsets connected to the cell network. In the United States Sprint, Nextel, Verizon Wireless, and Alltel all use AGPS. This is a method of utilizing the cellular network to speed up finding of GPS satellites.
A-GPS improves location tracking performance of smartphones (along with other related devices) in two ways:
The first way is by assisting to obtain a faster “time to first fix” (TTFF). A-GPS gets and archives information about satellite position using the cellular network and so the coordinates data does not need to be downloaded via the satellite.
The second method is by assisting locate mobile phones when GPS signals are weak or impeded. Since GPS satellite signals may be interfered with by tall buildings, and do not go through building interiors well Assisted GPS uses distance to cellular towers to compute position when GPS signals are not obtainable.
In the event that satellite signals are not available, or precision is less important than battery life, making use of Cell-ID is a useful alternative to GPS mobile phone location. The location of the handset may be determined by the cell network cell id, that identifies the cell tower the phone is using. By knowing the position of the tower, you’ll be able to know approximately the location where the mobile phone is. Nonetheless, a tower can cover a massive area, from a few hundred meters, in higher populationdensity areas, to a few miles in lower density regions. This is why location CellID precision is less than than GPS accuracy. Nonetheless location via CellID still presents a truly handy substitute.
Another way of formulating handset 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 telephone to at least three cell towers to judge location.
Tips about Cell Phone Software for GPS Monitoring
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