Wi-Fi Positioning System
Wi-Fi-based positioning system (WPS, not to be confused with Wi-Fi Protected Setup) is used where GPS is inadequate due to various causes including multipath and signal blockage indoors. Such systems include indoor positioning systems. Wi-Fi positioning takes advantage of the rapid growth in the early 21st century of wireless access points in urban areas. Commercial providers of this type of positioning service include Google, Navizon and Skyhook Wireless.
The localization technique used for positioning with wireless access points is based on measuring the intensity of the received signal (received signal strength in English RSS) and the method of "fingerprinting". The accuracy depends on the number of positions that have been entered into the database. The possible signal fluctuations that may occur can increase errors and inaccuracies in the path of the user. To minimize fluctuations in the received signal, there are certain techniques that can be applied to filter the noise.
Read more about Wi-Fi Positioning System: Privacy Concerns, See Also
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