Analysis of the Influence of the Heights of Optimal Beacon Placements on the Accuracy of Indoor Positioning
| Autor: | Hao-Hsiang Hung, 洪浩翔 |
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| Rok vydání: | 2016 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 104 Location services can use information from cellular, Wi-Fi, Zigbee, and iBeacon sources. Indoor localization can conveniently find the locations of objects or people. It’s one of important applications in Bluetooth-based wireless sensor networks. Received Signal Strength Indication-based (RSSI) positioning technology does not need too much extra equipment and is widely used in indoor localization research. However, RSSI signals are susceptible to attenuation from physical objects in indoor environments, such as furniture, walls, and bodies, which reduce the accuracy of indoor locations. In recent years, RSSI-based localization research has focused on the improvement of the positioning localization mechanisms or algorithms. It is difficult to improve the accuracy of localization with inferior RSSI signals. Sensor placements affect the quality of indoor positioning. Therefore, we study various heights of sensors and mobile phone. In this study, we proposed a RSSI height and distance relational model to find the optimal sensor height range. The results show that the cumulative distribution function (CDF) of accuracy is improved by 20% and 8%, with an error distance of 1m, in non-line-of sight (NLOS) and line-of sight (LOS) environments, respectively. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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