이동노드의 실내위치파악 시스템을 통한 벡터기반 상대방위각 알고리즘

다국어 초록 (Multilingual Abstract)

Indoor-positioning systems are useful to various applications. Navigation system is one of the most popular applications, which needs the information of directions of nodes’ movements. Specifically the applications should get the information in real-time to properly show the current moving position of a node. In this paper, simple vector-based algorithms are proposed to compute amount and direction of changes of azimuth of mobile nodes’ heading directions using existing indoor positioning systems in indoor environments where azimuth sensors do not work properly. Previous algorithms calculate the azimuth changes by too many steps of topology-based formula. The algorithms proposed in this paper get the amount of changes of azimuth by simple formula based on vector, and determine the direction of changes by the sign of value of simple formula based on the previous movement of nodes. The algorithms are much simpler and less error-prone than previous ones, and then they can detect changes in many location-based applications as well. The performance of the algorithms is proved logically and mathematically.

참고문헌 (Reference)

1 김정하, "무선통신기반 위치인식을 이용한 실내 내비게이션 시스템에 관한 연구" 한국마린엔지니어링학회 37 (37): 114-120, 2013

2 Hopper A, "The Active Badge System" 533-534, 1993

3 Liu, H., "Survey of Wireless Indoor Positioning Techniques and Systems" 37 (37): 1067-1080, 2007

4 Woo, J. S., "A Study on Regulation of Telecommunication Service Providers related to the Changing Environment of Telecommunication Market" Graduate School of Public Administrator, Seoul National University 2004