车联网环境中混合定位算法的研究及软件设计

发布时间：2018-02-02 03:19

本文关键词： 车联网车辆定位混合定位算法　出处：《哈尔滨理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着车联网的飞速发展和国家对道路交通的高度重视,安全的出行环境、高效的行车效率、实时准确的定位技术逐渐成为了现今的热点话题。单一的定位技术受环境、天气、建筑、设备部署等多方面影响,并不能满足人们对车辆定位的需求。在车联网环境中,将多种定位技术的定位信息融合起来,取长补短,对提高车辆定位的准确性有很重要的意义。为了满足车联网环境中对车辆实时准确的定位需求。本文给出了一种适用于车联网环境的混合定位算法,并基于Android平台进行了定位软件的设计。算法以蜂窝、GPS、WLAN三种定位技术为研究对象,对定位技术的重要性进行分析,通过移动终端反馈回来的重要性作为下次优化定位误差的依据,在此基础上对重要性进行加权、平均,最终获取位置信息。定位软件是基于Android平台进行设计的,首先,对定位软件的总体功能进行分析;然后,在Android平台上利用JAVA语言对UI模块、位置服务模块、异常处理模块、通信模块进行了功能分析和详细设计。本文给出的混合定位算法随着重要性的变化进行自适应调整,以此增强定位技术的准确性,避免了自适应加权定位算法的木桶效应。仿真结果表明,给出的混合定位算法提高了定位的准确性和适应性,算法的执行时间在39ms以内,可以满足车联网环境中对车辆定位的要求。移动终端的定位软件可以查询到终端的位置信息、路况信息和建议行程,在提高车辆定位准确性的基础上为移动终端提供更加可靠的服务。
[Abstract]:With the rapid development of vehicle networking and the country attaches great importance to road traffic, a safe travel environment, efficient driving efficiency. Real-time and accurate positioning technology has gradually become a hot topic. A single location technology is affected by environment, weather, architecture, equipment deployment and so on. It can not meet the needs of the vehicle positioning. In the vehicle networking environment, the location information of various positioning technologies can be combined to learn from each other. It is very important to improve the accuracy of vehicle positioning. In order to meet the need of real-time and accurate vehicle location in vehicle networking environment, this paper presents a hybrid location algorithm suitable for vehicle networking environment. Based on the Android platform, the location software is designed. The importance of the location technology is analyzed by taking the three positioning technologies of the cellular GPS WLAN as the research object. The importance of feedback from the mobile terminal is used as the basis of the next optimization positioning error. On this basis, the importance is weighted and averaged. Finally, the location information is obtained. The location software is designed based on the Android platform. Firstly, the overall function of the location software is analyzed. Then, the UI module, the location service module and the exception handling module are analyzed by using the JAVA language on the Android platform. The communication module is analyzed and designed in detail. The hybrid localization algorithm proposed in this paper adaptively adjusts with the change of importance, so as to enhance the accuracy of location technology. The bucket effect of the adaptive weighted localization algorithm is avoided. The simulation results show that the proposed hybrid localization algorithm improves the accuracy and adaptability of the location, and the execution time of the algorithm is less than 39 Ms. The location software of mobile terminal can query the location information of the terminal, road condition information and suggested itinerary. On the basis of improving the accuracy of vehicle positioning, it provides more reliable services for mobile terminals.
【学位授予单位】：哈尔滨理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U495;TN92;TP311.52

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