NGPLS - 一個非 GPS 之定位系統

Abstract

隨著電子技術的進步以及無線通訊的廣泛使用，一個伴隨而生的相關 技術亦在此凸顯其 重要性。指的便是“定位”。與定位相關的應用有許 多，比如個人安全、群體管理、交通事 故回報、導航服務、道路救援服 務、貨物追蹤及自動計費等。 在本篇 論文裡，首先我們對現存的定位演算法做一番研讀。在比較過這幾個方法 之後， 我們選擇一個合適的用來製作我們的系統。然後我們對於系統每 個部分描述它的功能並設計 出相關的協定及訊息格式。最後，我們也設 計了一個模擬測試用來證明此系統-NGPLS的正確 性及可行性。 With the advances in electronics and the broad usage in wireless communication,an accompanied promising technology is revealing its importance. That is position location. The applications with position location are various, including personal safety, fleet management, accident reporting, navigational services, roadside assistance, cargo tracking, automated billing, fraud detection, and etc. In this thesis, we make a survey of existing position location algorithms at first. After making a comparison among these methods, a suitable one is chosen to apply in our system. Then we design each component of the system by describing its functions, designing related protocol features and message formats. At last, a simulated test is given to prove the correctness and practicability of the proposed system -- NGPLS.