基于公网的差分GPS技术

【作者】 吴钦；

【导师】 杜国平；

【作者基本信息】 南京理工大学 ， 控制理论与控制工程， 2007， 硕士

【摘要】 随着GPS技术的发展和完善，应用领域的进一步开拓，产生了一系列与GPS定位技术相关的研究热点，其中之一便是车载监控系统。在GPS定位技术中由于定位精度不能满足要求，从而应运而生差分GPS技术，这项技术的运用使得定位精度大大提高。本文在已经开发出的车载监控系统的基础上，研究差分GPS技术，并以公网和移动通信网为数据传输链路，提高车载监控系统的定位精度，以满足用户对定位精度要求。本文对差分GPS技术的理论作了研究，包括测量误差、定位原理以及差分选型。在对差分系统的全面分析把握的基础上提出了系统的设计方案。根据设计的要求，完成了一系列的前期准备工作，包括对基准站坐标的测定、PC机与GPS的串口通信以及思考并解决了公网数据传输中遇到的部分问题等。最后根据差分算法按照差分系统的模型、功能，设计了差分系统的实现软件，并且得到了相应的差分数据和监控对象的修正位置坐标。很好的实现了预定的目标。更多还原

【Abstract】 With development and improvement of GPS technology as well as the further exploration of application domains, it come into being a series of research hotspots which is related to the GPS positioning technology as the vehicle monitoring system being one of them. Due to the fact the accuracy of GPS positioning technology can not meet the requirements, differential GPS positioning technology came into being. The adoption of this technology makes the positioning accuracy greatly improved.Based on the vehicle monitoring system which has been developed, this paper has studied the differential GPS positioning technology with Internet and mobile communications network as data transmission links in order to improve accuracy of positioning and meet user’s requirements for positioning accuracy. In this paper, we have studied the differential GPS technology theories, including measurement error, positioning theory and differential GPS positioning selection, and proposed the systematic design program on the basis of the comprehensive grasp of differential GPS positioning system. According to the design requirements, we have completed a series of preparatory work, including the test of coordinates of the base station, serial communication between PC and GPS, and some problems in the Internet data transmission that has been solved. Finally, in light of differential algorithm and model and functions of differential system, we have designed the software to realize differential system, get the differential data, and amendment coordinates of monitoring target with the result of achieving preset goal.更多还原