Jul 02 2008
Hybrid Positioning System
Posted by: Sierra in Accesories

The new product that Skyhook Wireless launched a few days ago is a combination of three advanced technologies to crate an advanced Hybrid Positioning System called XPS 2.0.
Using signals from Wi-Fi access points, GPS satellites and cell towers, XPS 2.0 delivers the best location to handsets’ users.
"XPS 2.0 introduces a major advancement in location technology," said Ted Morgan, founder & CEO of Skyhook Wireless. "By combining the underlying measurements from various systems, including our revolutionary WPS, into a seamless location output, Skyhook delivers the best overall location performance for device makers, operators and application developers."
It happens fast, in just 4 seconds, and with high precision, based on advanced positioning algorithms which helps in leveraging signals from just two GPS satellites to improve Wi-Fi location accuracy by 35%+.
While A-GPS systems can produce a location 70% of the time outdoors, XPS 2.0 reaches 100%, as it uses weak GPS signals with Wi-Fi. In addition, XPS is a better power conserver than A-GPS.
Users must get the location calculations regardless of the environment. For this to happen, XPS uses adds cell tower positioning.
Wi-Fi used in cell phones allows these devices to connect to the Internet wirelessly but only when they are located in Wi-Fi covered locations.
The Global Positioning System consists of using satellites that transmit microwave signals, to enable GPS receivers to determine their location, speed, direction, and time.
A mobile phone communicates with its service network through a tower or a base station and these towers are dividing a town into smaller areas or cells. While the mobile phone’s signal is handed from tower to tower as the user drives down the street, the jamming device can transmit on the same radio frequencies as the phone, disrupting this way the communication between the phone and the base station in the tower.
XPS is a software-based solution enabling localization on all mobile devices with the help of Wi-Fi, GPS or a cellular radio (GSM/CDMA) technologies, determining the position with 10-20 meters accuracy, ad it works like this: when the user runs map navigation or a similar application, in searching for directions to a place, the application launches the XPS engine. It scans the area to detect Wi-Fi access points’ signals, GPS signals and those coming from cellular towers. These signals provide the unique IDs of each Wi-Fi access point, towers and GPS. The time it takes to get this information is of maximum 150 milliseconds.
Available over US and European areas, XPS 2.0 will cover worldwide cities by the end of this year, and according to Skyhook Wireless, headquartered in Boston, MA, XPS works indoors and outdoors, without requiring additional hardware to work.








Comments