【正文】 向遙測遙控天線，用于與地面監(jiān)控網(wǎng)的通信。各軌道平面的升交點(diǎn)的赤經(jīng)相差 60176。由于 SPS 無須任何授權(quán)即可任意使用，原本美國因?yàn)閾?dān)心敵對國家或組織會(huì)利用 SPS 對美國發(fā)動(dòng)攻擊，故在民用訊號(hào)中人為地加入選擇性誤差（即 SA 政策， Selective Availability）以降低其精確度，使其最終定位精確度大概在 100 米左右；軍規(guī)的精度在十米以下。南通大學(xué)畢業(yè)設(shè)計(jì)（論文） 第 3 章 技術(shù)背景介紹 GPS 全球定位系統(tǒng)簡介 全球定位系統(tǒng)（英語： Global Positioning System，通常簡稱 GPS），又稱全球衛(wèi)星定位系統(tǒng)，是一個(gè)中距離圓型軌道衛(wèi)星導(dǎo)航系統(tǒng)。 采用 REST 協(xié)議，響應(yīng)客戶端請求，返回給客戶端一端數(shù)據(jù)流，該數(shù)據(jù)流按照 JSON 格式，返回給客戶端，由客戶端進(jìn)行解析。第四和第五部分就是系統(tǒng)詳細(xì)的設(shè)計(jì)與實(shí)現(xiàn)及測試結(jié)果等，然后對整個(gè)畢業(yè)設(shè)計(jì)進(jìn)行了總結(jié)，最后部分為致謝。 還有一部分網(wǎng)上的公交查詢系統(tǒng)，它們的系統(tǒng)功能比較完善，實(shí)現(xiàn)站點(diǎn)、線路查詢以及換乘查詢，更加完善一點(diǎn)的系統(tǒng)還有電子地圖查詢等功能，但是對城市有代表性的地點(diǎn)介紹和查詢的功能，做得好的比較少。他們發(fā)展公交南通大學(xué)畢業(yè)設(shè)計(jì)（論文） 查詢系統(tǒng)的特點(diǎn)是能夠提供快捷、方便的電話咨詢服務(wù)；與定位技術(shù)相結(jié)合，提供實(shí)時(shí)信息服務(wù)；觸摸屏在公共場所的廣泛使用以及查詢與網(wǎng)絡(luò)的結(jié)合。這類手機(jī)中應(yīng)用處理器成為系統(tǒng)的核心，而 GSM／ GPPS 等通信MODEM 則成為實(shí)現(xiàn)連接功能的外設(shè)之一，此外還有其它通信外設(shè)，如 WLAN、藍(lán)牙、 USB 等，并且可能提供統(tǒng)一的擴(kuò)展接 口。通過此查詢工具可以查看線路，查 找任意兩地的乘車方案等，更方便用戶出行，節(jié)約時(shí)間，減緩交通壓力。 關(guān)鍵詞 ： android，公交路線查詢， Baidu Maps 南通大學(xué)畢業(yè)設(shè)計(jì)（論文） ABSTRACT With the rapid development of wireless mobile munication and the rapid growth of the mobile business types, all business on the Inter in a mobile munication system. However, due to reasons of user needs, or whether or not the terminal supports the factors, not all phones can correctly display the same information content. And more and more with the type of client device, more and more personalized service requirements, personalized information service has bee important direction of the future development of a work information service. Mobile terminal is a plex system with advanced munication protocol stack, it needs to have interoperability with many work devices, and support advanced rich multimedia applications. Moreover, all of which must be implemented in a resourcelimited embedded system under restricted conditions. Android technology provides crossplatform capability, and supports a variety of devices devices. Android technology for wireless devices to create a new development platform that lets mobile munications equipment to play the greatest potential. Android phone as a mobile terminal provides a good solution for the future development of mobile munication. In this paper, the Android system characteristics, system architecture and application build, developers have done a more detailed analysis. Combination Baidu Maps, GPS positioning technology, positioning and navigation android conducted indepth research and design of bus routes Androidbased query application. The system uses the Java language and Eclipse development tools to write. At the same time gives a detailed system design process, part of the interface diagram and operation flow chart of the main function of the development process, the paper also encountered problems and solutions are discussed. The system functions of the main transfer query line query and site search function, not only can show the results of the query, but also to the electronic map display based on userselected line, to make the system more intuitive. Key words: android, Bus routes queries, the Baidu Maps 南通大學(xué)畢業(yè)設(shè)計(jì)（論文） 目 錄 第 1 章 緒論 ............................................................................................................................1 課題的研究意義 ........................................................................................................1 移動(dòng)終端的發(fā)展現(xiàn)狀 ................................................................................................1 公交查詢現(xiàn)狀 ............................................................................................................2 本次課題研究內(nèi)容 ....................................................................................................3 第 2 章 需求分析 ....................................................................................................................4 服務(wù)器端需求分析 ...................................................................................................4 客戶端需求分析 .......................................................................................................5 第 3 章 技術(shù)背景介紹 ............................................................................................................6 GPS.............................................................................................................................6 全球定位系統(tǒng)簡介 .........................................................................................6 GPS 系統(tǒng)的組 .................................................................................................7 GPS 的功能 .....................................................................................................8 應(yīng)用前景 ........................................................................................................9 Android 平臺(tái) ..............................................................................................................9 Android 特征 ...................................................................................................9 Android 架構(gòu) .................................................................................................10 Android 應(yīng)用的構(gòu)成和工作機(jī)制 .................................................................12 本章小結(jié) ..................................................................................................................14 第 4 章 平臺(tái)的搭建 ..............................................................................................................16 Android 開發(fā)環(huán)境的搭建 .......................................................................................16 JDK 的安裝 ...................................................................................................16 Eclipse 的安裝 ..............................................................................................17 Android SDK 安裝 ........................................................................................17 ADT 安裝 ......................................................................................................19