碩士 / 國立臺北大學 / 通訊工程研究所 / 98 / With the rapid development of embedded technology, GPS navigation devices become cheaper yet more powerful. Most users are often confused by the difference between environmental recognitions and geographical navigation data. Since the position and orientation information are received from GPS sensor which is easily influenced by environmental interference, it will further reduce the effect of GPS navigation. This paper presents the smart perceptive waypoint aware service of legacy GPS navigation system to provide seamless Location Based Service to solve the interruptive and interference problem of navigation service. The proposed real-time navigation technique is based on context-aware techniques to solve the re-route planning problem, which can lead the user to have disorientation situation. For example, since the legacy GPS navigation system cannot acquire the navigation status of user and then provide the wrong path to the user. This paper proposes a novel approach, called Waypoint Service, to improve the timing of re-route planning accuracy directly from the contextual information of received user behavior data. To utilize the characteristics of navigation sequential and temporal data, Waypoint aware starts by sample received navigation data into motion states according to Newton’s Law of Motion and derive Newton Markov Model (NMM) to describe the relationship among these states. Based on NMM, Waypoint aware captures the carrier’s behavior into a stable Transition Probability Matrix (TPM) during the training phase. Using the stable TPM, Waypoint aware infers the abnormal behavior of the GPS carrier from online received navigation data and offer the next reasonable waypoint. Based on PGPS technique, Waypoint aware is designed to perceive the relationship between user’s movement and his surrounding geographical environment from the integration of GPS digital compass on the Android power platform. The Augmented Navigation service is further integrated to provide intuitive navigation interface to the user. The study conducts the serious of experiments to verify the feasibility of proposed waypoint aware service on the common carrier. The experiment results reveal the waypoint aware can offer the earlier timing of the re-route planning than traditional GPS navigation system. The proposed waypoint aware service can provide more timely, intuitive and convenient navigation service.
| Identifer | oai:union.ndltd.org:TW/096NTPU0650010 |
| Date | January 2010 |
| Creators | Yi-Fan Li, 李鎰帆 |
| Contributors | Jiung-Yao Huan, 黃俊堯 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 65 |
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