Enhanced-positioning systems are able to support the acquisition of accurate location information using wireless technology other than the Global Positioning System (GPS). These systems have the potential to supplemen...
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Enhanced-positioning systems are able to support the acquisition of accurate location information using wireless technology other than the Global Positioning System (GPS). These systems have the potential to supplement GPS where GPS is unreliable. In particular, enhanced-positioning systems can provide location information for navigational support and Location Based Services (LBS) indoors and in dense urban canyons and natural environments with extreme relief. The emergence of LBS and the widespread adoption of GPS-based navigation systems are largely a result of the accuracy with which GPS devices can determine location. The purpose of this study is to validate Wireless internet access points (WiFi APs) for determining location. This research follows three steps: 1. establish the accurate WiFi position for APs;2. plot transects of signal strength for APs;and 3. interpolate a campus signal strength map from transect data for the University of Saskatchewan campus and validate that map. This is the first step towards the development of a non-GPS location system that can provide accurate location in a fashion that can be seamlessly integrated with GPS.
Indoor propagation study for wlan system operating at 2.452 GHz was performed at university building. Theoretical analysis, and simulation results, obtained from the Insite software package, as well as experimental me...
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ISBN:
(纸本)9781467316583
Indoor propagation study for wlan system operating at 2.452 GHz was performed at university building. Theoretical analysis, and simulation results, obtained from the Insite software package, as well as experimental measurements were performed to estimate propagation exponent and wall penetration loss. The experimental data have validated the simulation results. The estimated exponents were found between 1.45 -2.2, and average wall penetration loss of about 3.5 dB.
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