CAJ | 학술논문

当车辆不能通过GPS接收机获得自身位置信息时，就难以获得有用的交通提示风险服务。提出了一种新的基于车载移动ad-hoc网络车辆定位方法，该方法能够获取作为网络节点车辆的大致位置，并结合一种改进的警报信息优化传播算法，向即将处于危险或拥堵区域的不能通过GPS接收机定位的车辆发送警报信息。仿真实验表明只要车辆自组织网络中有40％的车辆可以获得GPS的定位信息，就可以将警报信息准确完整地送达处于网络中的所有车辆。当遇到浓雾天气、交通事故或者是其他拥塞时，该方法会防止车辆进一步拥堵并能提醒驾驶员防范危险。
당차량불능통과GPS접수궤획득자신위치신식시，취난이획득유용적교통제시풍험복무。제출료일충신적기우차재이동ad-hoc망락차량정위방법，해방법능구획취작위망락절점차량적대치위치，병결합일충개진적경보신식우화전파산법，향즉장처우위험혹옹도구역적불능통과GPS접수궤정위적차량발송경보신식。방진실험표명지요차량자조직망락중유40％적차량가이획득GPS적정위신식，취가이장경보신식준학완정지송체처우망락중적소유차량。당우도농무천기、교통사고혹자시기타옹새시，해방법회방지차량진일보옹도병능제성가사원방범위험。
When the vehicles cannot receive their own position information by GPS, it is hard to get useful tips on traffic risk. This paper proposes a new positioning method based on car mobile ad-hoc network, which can obtain approximate location of a car as a network node. This method uses an improved optimization propagation algorithm of alarm messages, which helps the vehicles that are in danger or traffic jam while can not position by GPS to receive alarm messages. Simulation test shows that if 40% of all vehicles in the network can receive positioning messages by GPS, all vehicles can correctly and completely get alarm messages. In the condition of fog, accident or other traffic jam, this method can stop vehicles from traffic jam and prevent drivers form being in an accident.