整合Wi-Fi與GPS技術於室外定位之研究

On Outdoor Positioning with Wi-Fi and GPS

10.6677/JTLR.201505_18(1).0001

林老生(Lao-Sheng Lin)；郭清智(Ching-Chih Kuo)

Wi-Fi定位 ； 戶外定位 ； 定位精度 ； 訊號紋法 ； 高感度GPS接收器 ； Fingerprinting ； High Sensitivity GPS Receiver ； Outdoor Positioning ； Positioning Accuracy ； Wi-Fi Positioning

臺灣土地研究

18卷1期（2015 / 05 / 01）

1 - 19

繁體中文

本文提出整合Wi-Fi與GPS（Wi-Fi/GPS）技術於室外定位的演算法，希望在都市區域能提供無縫的適地性服務。以國立政治大學的山下校區為實驗區，並對下列議題加以研究：（1）Wi-Fi定位的精度，（2）GPS定位的精度，（3）Wi-Fi/GPS定位的精度，及（4）Wi-Fi定位之平面精度與參考點間距之函數關係。根據實驗結果顯示：（1）Wi-Fi/GPS室外定位的平面與高程精度，皆優於Wi-Fi定位或GPS定位；（2）可以簡單函數，建立Wi-Fi定位之平面精度與參考點間距之關係。

In order to provide a ubiquitous location-based service (LBS) in the urban areas, an outdoor positioning algorithm integrating Wi-Fi with Global Positioning System (GPS) (Wi-Fi/GPS) was proposed in this study. Two test data sets from the downhill campus of National Chengchi University were used to test the proposed algorithm. The following topics were studied: (1) Wi-Fi positioning accuracy, (2) GPS positioning accuracy, (3) Wi-Fi/GPS positioning accuracy, and (4) the relationship between the reference point intervals and the Wi-Fi planimetric accuracies. According to the test results, the following comments can be concluded: (1) the Wi-Fi/GPS positioning accuracies are better than those from Wi-Fi positioning or GPS positioning, and (2) a simple function can be used to establish the relationship between the reference point intervals and the Wi-Fi planimetric accuracies.

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