The RSSI-based Localization Estimation Integration with Inertial Navigation in Wireless Sensor Network

• Main Authors: Choung-Jou Lin, 林重州
• Other Authors: Yao-Chiang Kan
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/85930587479130883462

碩士 === 銘傳大學 === 電腦與通訊工程學系碩士班 === 98 === For the wireless sensor network applications, the anchor node is a key component for calculating the location information. In this research, the system was designed to read Global Positioning System (GPS) data, 3D-Accelermoters and Tmote mini plus from a GPS anchor node. Then the anchor node was designed to read the information from a displacement detector node with 3D-Accelermoters, 3D-Gyroscopes and Tmote mini components. First the location was determined by the GPS anchor node, then the location of the displacement detector node was localized by using wireless protocol to detect received signal strength indicator (RSSI) value between GPS anchor and displacement detector node. Last, calculating the distance based on RSSI formula, and using curve fitting function to find the relationship between RSSI and distance, finally obtain the localization. In this study, the GPS anchor node localizes itself based on the GPS signal which is the absolute location. However, the displacement detector node location is estimated by RSSI value between the GPS anchor node and itself which is a relative position. By the integration of the GPS and RSSI localization, the localization estimation can be completed in the whole area of wireless sensor node position prediction.