Wireless tracking and positioning radar system in wireless networks

Abstract

Wireless communication was invented with the main goal of allowing a free wire channel communication over a medium (air) between devices with final purpose the exchange of information. Along with the deployment of wireless communication in nearly every day life electronic device rising from home appliances, cars, smartphone’s and thousands more, the rapid increase of wireless communication brought along many challenges like security, benefits like mobility but also created a hall new wireless scientific area in which by taking into account characteristics of wireless signalling like time of flight, angle of arrival, signal strength and others gave the opportunity for researchers to create and study new algorithms and to companies and developers to create new applications vary in health, safety, industry monitoring, environment and many others with final cause the localization of different devises in space. Perhaps the most well known system that emerged is GPS which is a wireless outdoor positioning system. Due to the complexity, the price and the fact that GPS is not functioning well in indoor spaces and recent advances in wireless technology gave the ability for creation of indoor wireless positioning systems based on the previous mentioned characteristics of wireless communication. The purpose of this project is to create such a system based on values of WLAN received signal strength (RSSI) using mid range hardware devices available to everyone and open source tools. The system will compare RSSI signals values obtained at run-time (at an unknown position) with the ones collected during an off-line survey phase (fingerprint database) and also a second purpose is to investigate the accuracy and quality of the algorithm Nearest Neighbor RSS Location Method. One third goal is to investigate the effect and the impact of the position of a laptop screen (laptop angle) against on how the laptop finally receives the RSSI signal due to the fact that most laptops have the wireless card embedded in their screen.