衛星定位系統的應用當中，以汽車導航系統最被大眾所接受。其主要架構是將裝置在車輛上的衛星定位系統接收到全球定位資訊傳送到車上電腦加以處理，將所得之座標及路徑配合電子地圖顯示在螢幕上。
衛星定位系統需要與電子地圖配合，才能建構出完整的汽車導航系統。電子地圖為大量路網資料庫，需要較大容量的儲存媒體。然而汽車是一個隨時在移動的物體，因路況的不同而造成震動，造成系統無法讀取儲存媒體中的電子地圖之不穩定情形。
本篇論文即在探討汽車導航系統因震動或是瞬間的衝擊，而導致系統不穩定之情況分析。並試圖採用CNS (中國國家標準)汽車用電子設備環境試驗之相關振動測試實驗及衝擊測試實驗，來分析硬式磁碟機、光碟機及記憶卡等之特性，以了解其在汽車導航系統上使用之可行性。

Vehicle navigation system is one of the most important applications of the Global positioning System（GPS）. In vehicle navigation system position information obtained from GPS receiver is transmitted to automobile computer. The position information will then be displayed on screen along with electronic map.
Therefore, a vehicle navigation system is an integration one that combines both GPS and electric map. However, it needs huge storage capacity to store tremendous geographical and traffic network information. Besides, due to that vehicle is moving when vehicle navigation system is working; unconditioned vibration and shock caused by bad road condition can produce unstable data-reading of the storage medium in the vehicle navigation system.
In the paper, the unstable data-reading analysis is performed with respect to the vibration and shock causes. We adopt the vehicle electronic device environmental test specification in CNS (Chinese National Standard) as the test environment of our experiments. Three types of large storage medium：hard disc, CDROM, and memory card, are analyzed in our experiments. Experimental results show that memory card is the best to be the storage medium in vehicle navigation system.

中文摘要……………………………………………………………………i
英文摘要……………………………………………………………………ii
誌謝…………………………………………………………………………iv
目錄…………………………………………………………………………v
表目錄………………………………………………………………………vi
圖目錄………………………………………………………………………vii
一、 緒論………………………………………………………………1
1.1 研究動機與目的…………………………………………………………1
1.2 研究方法 .………………………………………………………………1
1.3 論文架構 ………………………………………………………………2
二、 全球衛星定位系統……………………………………………………3
2.1前言………………………………………………………………3
2.2全球衛星定位系統架構…………………………………………3
2.2.1太空部份…………………………………………………4
2.2.2地面控制系統……………………………………………5
2.2.3使用者…………………………………………………………………6
2.3 GPS的定位原理…………………………………………………6
2.4 GPS的信號………………………………………………………10
2.5 GPS信號傳送的誤差……………………………………………10
三、 汽車導航系統………………………………………………………13
3.1汽車導航系統沿革與發展………………………………………13
3.2汽車導航系統平台探討…………………………………………15
3.2.1 PDA導航系統……………………………………………15
3.2.2筆記本型電腦導航系統…………………………………16
3.2.3車載型汽車導航系統……………………………………17
3.3汽車導航系統架構………………………………………………18
四、 儲存媒體之介紹……………………………………………………23
4.1 概述……………………………………………………………23
4.2 硬式磁碟機……………………………………………………23
4.3 光碟機…………………………………………………………25
4.4 記憶卡…………………………………………………………28
五、 儲存媒體於車輛使用抗震性實驗分析……………………………32
5.1 實驗環境簡介…………………………………………………32
5.2 振動實驗………………………………………………………33
5.3 衝擊實驗………………………………………………………40
5.4 實驗討論………………………………………………………44
六、 結論…………………………………………………………………45
參考文獻……………………………………………………………………46

中文參考文獻
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英文參考文獻
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