本文介紹了一種新的基于無線自組網的嵌入式車載系統，有別于傳統的車載系統，該系統采用了一種應用于城市場景中的基于無連接的路由算法，并在Mac 層采用一種功率可調的方案改善網絡通信質量。該文結合GPS/INS(全球定位與慣性導航)組合定位技術、地圖匹配技術和多媒體技術等，實現車輛間的有效定位、無線通信和多媒體服務。該系統可應用于城市的各類交通系統中，給城市交通帶來諸多便利，同時，對其他環境下的自組織網絡應用也有一定的參考價值。
關鍵詞：ad hoc；CLA-S；GPS/INS；功率可調；車載系統
Abstract：A new embedded vehicle system based on Ad Hoc is proposed in this paper. Compared with the traditional vehicle system，this system adopts a routing algorithm based on connectionless approach which is properly applied in city environments, and the quality of communication has been improved through a adjustable power method at the Mac layer. This paper discusses the implementation of effective positioning, wireless communication and the multimedia service between the vehicles, etc, integrated with the technology of GPS/INS positioning, map matching and embedded media processing. This system can be implied in
various types of traffic systems, bringing convenience to the city traffic. In the meantime, it can also serve as a useful reference to the applications of ad hoc networks in other environments.
Key words：ad hoc; CLA-S; GPS/INS; power adjustable; vehicle system