有鑑於行動通訊的演進對於個人化定位系統的發展，對於相對位置評估的準確度與可用性十分重視。本論文提出一架構於GPS與GSM網路上的定位方法，一方面可彌補GPS接收機在室內環境與周圍均具有高遮蔽物下的失去接收衛星訊號的盲點，另一方面可藉由GPS位於室外定位的高準確度去修正原GSM演算法定位的誤差。
　　在文章中提出GSM系統定位的幾種常用方式，經過各方法的比較與評估後採用以訊號強度( Signal Strength ) 作為GSM演算法的參數值，並將加權式(Weighted Center of Gravity )中心訊號強度演算法與本論文所提出的改良式( Advance WCG)訊號強度演算法作比較。
　　在實驗結果部份，先以模擬室內衰減環境比較出WCG演算法與AWCG演算法的定位效果，再用自行設計的硬體電路測量與回報實際環境數據。實況測量結果AWCG最大誤差為16.06公尺且平均誤差1.73公尺。
　　在未來定位系統應用方面提出四點：(1)結合商店與電信系統業者之加值個人化加值服務(2)提供生命安全上的照顧與便利(3)有效防止勒索與車輛失竊的犯罪行為(4) 遊樂區與賣場遊客定位管理。

　　Because the development of the individualized navigation system of gradual progress of the action communication, accuracy and usability estimated to the relative position are of great importance. A localization method based on GPS and GSM system was proposed in this thesis. The system not only can make up the blind spot when GPS receiver in the indoor environment, but it’s outdoor accuracy is also improved by calibrating original GSM positioning algorithm.
　　Put forward several kinds of daily ways in which GSM system makes a reservation in the article, adopt and regard intensity of the Signal Strength (SS) as GSM and perform the parameter value of the algorithm after every method comparison and assessment, and The Weighted Center of Gravity (WCG) Method algorithms and Advanced Weighted Center of Gravity (AWCG) Method algorithms and makes comparisons.
　　In the experimental result part, relatively publish WCG and perform algorithms and localization result that AWCG perform the algorithm by imitating the environment of decaying in room one first, and then reciprocate the real environmental data with the hardware circuit measurement that is designed by oneself. The AWCG greatest error is 16.06 m and 1.73 m of mean errors to measure in the real environmental.
　　Finally, we propose four points in navigation system application in for future reference:
　　　(1) The adding value of the person who combines the shop and telecommunication system industry individualizes the adding value to serve.
　　　(2) The treatment that is offered on the life security and facility.
　　　(3) Prevent extorting and make a reservation to manage with visitors of sales field in the traveling area of criminal offence.
　　　(4) That suffers loss by theft with the vehicle effectively.

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【2】黃念陸 『GSM行動電話系統手機定位』 義守大學/電子工程系/(90)碩士。
【3】 http://www.ericsson.com.tw/ericsson/technology/t02.htm台灣易利信
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【5】洪昌哲『3G環境下行動服務產業經營之研究』國立中山大學/高階經營碩士班/90碩士。
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【7】 http://www.wherifywireless.com Wherify Wireless GPS Locator.
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【13】 Inverse Square Law, available at URL:
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