【作者】 谭姝；

【导师】 宋茂忠；

【作者基本信息】 南京航空航天大学 ， 通信与信息系统， 2003， 硕士

【摘要】 随着微电子技术和Internet的飞速发展，小型化、网络化将会成为差分GPS(DGPS)的未来发展趋势，它可以满足设备成本以及算法灵活性等多方面的要求，其中，GPS数据采集和实时传输是处理定位信息的关键技术之一。 RCM2200是一种具有网络接入能力的嵌入式微控制器核心模块，本文根据差分GPS原理提出了一种新颖的基于RCM2200和GPS接收机的差分定位系统方案。作者完成了RCM2200与本地局域网的连接以及与GPS25LP—OEM之间的接口设计，采用Dynamic C语言编程，在RCM2200嵌入式微控制器模块上开发了一个通信控制器，根据GPS25LP—OEM的输出数据类型和格式，提取了GPS定位数据并以UDP报文的形式转发给本地局域网，在本地局域网的计算机上，采用Visual C++进行编程处理，使用户实时观察到定位所需的有用数据信息。联机调试证明，采用的方案是合理的，接收的数据是可靠的。更多还原

【Abstract】 With the rapid development of micro-electronic technology and Internet,miniaturization and network realization will be a developmental direction of DGPS. It can meet many user requirements such as device cost and algorithm agility and so on. How to obtain and process GPS data efficiently is an important technology.The RabbitCore RCM2200 microprocessor module features an integrated Ethernet port and provides for network communication systems to be built easily. This paper presents a new scheme based on RCM2200 and GPS receiver with the aim to solve DGPS location problem through network. The author first completed interface design between RCM2200 and GPS25LP-OEM,and connected RCM2200 with local area network. Then a communication controller was developed on RCM2200 microprocessor module using Dynamic C language to program,which could realize receiving GPS data and transmitting these data to local area network in the form of UDP message. In local computers,the author used Visual C++ to program and presented real-time data that was useful for location to users. The result was shown that the adopted scheme was reasonable and the presented data was reliable.更多还原