금속 환경에서의 UWB 방식 RTLS 시스템 구축을 위한 Reader의 최적 배치 방법 연구
- 금속 환경에서의 UWB 방식 RTLS 시스템 구축을 위한 Reader의 최적 배치 방법 연구
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- Recently, various location-based services have been realized through the advanced wireless communication system. In particular, RTLS (Real Time Location System) with UWB-based active RFID (Radio Frequency Identification) is remarkable due to its high accuracy. When the UWB-based RTLS system is deployed on the ground, most system engineers select location of readers with their intuition and know-how in the trial-and-error manner. However, such manner becomes inefficient or impossible as the complexity as well as the size of the system increases. Thus, a system engineering methodology is required for deploying UWB-based RTLS system, which has been studied in this thesis.
As the first step, this study is focused on the metal environment. However, it is realistic considering that the UWB-based RTLS system is typically applied to the industrial environment surrounded by the metal, such as steel making industry. The read rate of the UWB-based RTLS system is modeled by experiments, and optimization problem for determining the minimum number of the readers and their locations is formulated and solved by solution algorithm. The developed method is verified by simulations and real experiments, followed by discrepancy analysis between the two results.
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