Abstract
The WiFi technology is widespread. To launch the WiFi network is very simply, thus, they meet so often. Knowledge of the location of the antennas Wi-fi is very important for internal localization (position fix of an object). System of positioning of Wi-fi (WPS) or WiPS/WFPS are used where GPS and GLONASS are unavailable because of different reasons including multipath and signal blocking indoors. Such systems include as well internal systems of positioning. Use of Wi-fi not for creation of a network, and (for example, positioning of devices on the WiFi network) is urgent for other purposes because there is a rapid growth at the beginning of the 21st century of wireless access points in urban areas. This article discusses practical application of a method of localization with use of WiFi of access points which is based on measurement of intensity of the received signal (indication of the received signal or RSSI). Here the device which executes the measurements necessary for system operation is described. Some formulas for computation of layout of the device are given. Results of system operation are considered with different layouts of access points in the given space and different environments.
Highlights
Nowadays WiFi networks are so widespread that with their help one can create a network consisting of a large number of devices which are unattached to a certain place and capable to change the position in space
At present almost any corporate client has WiFi coverage, the infrastructure of this wireless network can be used for performing a number of tasks, in particular, for local positioning in the organization
Positioning of objects in WiFi networks can be used for achieving a number of purposes:
Summary
Nowadays WiFi networks are so widespread that with their help one can create a network consisting of a large number of devices which are unattached to a certain place and capable to change the position in space. At present almost any corporate client has WiFi coverage, the infrastructure of this wireless network can be used for performing a number of tasks, in particular, for local positioning in the organization. Accuracy of such systems will depend on density of points of access tied to specific points in the plan of buildings, constructions and territories [1]. Positioning of objects in WiFi networks can be used for achieving a number of purposes:. ─ automation of accounting and placement of objects; ─ control of personnel and clients of the organization; ─ ensuring technical safety; ─ navigation in the building; ─ data acquisition for information and analytical work
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