室內定位方法及其系統INDOOR LOCALIZATION SYSTEM AND METHOD

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

12/472,073

專利證號

US 8,022,875 B2

專利獲證名稱

室內定位方法及其系統INDOOR LOCALIZATION SYSTEM AND METHOD

專利所屬機關 (申請機關)

國立臺灣大學

獲證日期

2011/09/20

技術說明

一種室內定位方法及其系統，該方法包含以下步驟：先設置複數信標於一室內空間。利用一定位單元進行一訓練階段於室內空間中複數已知位置收集發自信標之訊號而得複數對應已知位置之訊號識別值。再進行一追蹤階段於室內空間中未知位置利用定位單元收集發自信標之訊號並與訓練階段所得訊號識別值進行比對。比對過程中，檢查追蹤階段所接收之訊號與訓練階段所得各已知位置之訊號識別值數量，若前者缺少則忽略。亦即，在算出前述兩者間的距離後並除以接收之訊號數，求出最鄰近複數個定位單元，而得一評估位置，達成提昇室內定位精確度目的。 An indoor localization method and its system, (wherein, the method) comprises steps as follows: First in an indoor space, setting up beacons; then moving a localization unit in the indoor space to receive the signals of the beacons and executing a training phase to obtain signal signatures formed by the signal vectors; after that, executing a tracking phase to obtain a signal vector at an unknown location; next checking the numbers of the received signals in the vector and the signal signatures, if the former are not complete then ignore the absent value(s) by calculating a distance between above signal vector and each signal signature and let each distance be divided by the total number of the received signals in the signal vector to get the nearest possible localizations; then getting an approximate location; thus, achieving the objective of accurate indoor localization.

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