超寬頻是一種新興的無線通信技術，它能解決現有頻寬不足的問題，並能建構出成本低廉的定位系統，不論在室內或室外皆可完成定位。而全球衛星定位系統是現今最普及的定位系統，但是卻面臨無法在室內繼續運作的問題。本論文針對這兩種定位系統作說明，並討論當此兩種系統結合後對於定位精度中的幾何精度因子的影響。除此之外，將使用完全最小平方餘量法來監測系統的整體性，對全球衛星定位系統的接收器與超寬頻定位系統收發器分別故障的狀況下做分析。

UWB (Ultra Wide Band) is a novel wireless communication technique. Because it is hard to find frequency bands under the crowded spectrum for new service, UWB is identified as a possible solution to a wide range of RF applications, including positioning services. GPS (Global Positioning System) is the most popular positioning system. It can provide a level of precision about 30 meters. However the performance of GPS is limited in an obstructed or indoor environment. In the thesis, the two positioning systems are briefly reviewed. An integrated GPS and UWB positioning system is analyzed to seek for accuracy improvement. Besides, the total least squares residuals method is investigated to monitor the integrated GPS and UWB system in the presence of failures in the GPS system or the UWB transponder.

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