An Implementation of Sensor Network Localization System Using A Mobile Anchor with A Directional Antenna

• Main Authors: Chun-Yu Tu, 涂俊瑜
• Other Authors: Chia-Ho Ou
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/38995319461761752942

碩士 === 國立屏東商業技術學院 === 資訊工程系(所) === 98 === Localization of sensor nodes is an important issue in the study of wireless sensor networks (WSNs). To know the locations of the sensors in the WSNs is an open issue in many real-world applications. There are several proposed mobile anchor node localization methods, but none of them combines with the directional antennas. Therefore, we propose a positioning system which using a mobile anchor node in WSNs with a directional antenna. In the system, the node can move along with X-axis and Y-axis, and sends the coordinate packet to the sensor via the directional antenna simultaneously. Sensor node could estimate the coordinate by simple mathematical operations by receiving the X-axis and Y-axis packets from the mobile anchor node. In the experimental results of the real-world environmental measurements, we measure the angle and range of transmission from the directional antenna. The results show that the average location error of the proposed system could achieves an accuracy of 5 m.