简易GPS定位信息系统设计(任务书,论文12000字)
摘 要
为了提高卫星定位的精度，美国自1973 年开始筹建全球定位系统GPS （Global Positioning System)。在经过了方案论证、系统试验阶段后，在1989年开始发射正式工作卫星，并于1994年全部建成，投入使用。GPS系统的空间部分由21颗卫星组成，均匀分布在6个轨道面上，地面高度是20000余公里，轨道倾角是55度，扁心率约为0，周期约为12小时，卫星向地面发射两个波段的载波信号，载波信号频率别为1575.442兆赫兹（L1波段）和1227.6兆赫兹（L2波段），卫星上安装了精度很高的原子钟，以确保频率的稳定性，在载波上调制有表示卫星位置的广播星历，用于测距的C/A码和P码，以及其它系统信息，能在全球范围内，向任意多用户提供高精度、全天候、连续、实时的三维测速、三维定位和授时。GPS的应用已十分广泛，而且越来越广泛，差不多涉及到国民经济的各个领域，尤其是近几年来其向消费市场的发展的强劲势头表时，以GPS为代表的卫星导航应用产品，由于他能很容易地提供位置、速度和时间信息，所以会很快成为现代信息社会重要信息来源，成为信息时代的国家基础设施之一，由于他功能强大、使用方便、价格合适，所以能很好的与其他系统结合，形成大量的新应用、新产品，迅速的进入我们日常工作、学习、生活和娱乐中。本设计由单片机控制器来对GPS模块发送的信息进行处理,通过液晶显示器显示北京实时标准时间、及经纬度等信息，对系统的整体设计方案进行了分析，并对各个功能组成模块及其涉及的硬软件进行细致的介绍。
关键词：单片机； LED显示器；GPS；串行通信
Abstract
In order to improve the precision of satellite positioning, the United States, started in 1973, the global positioning system GPS (Global Positioning System). After a demonstration program in progress, the system test phase, was officially launched in 1989 working satellites, all built in 1994, put into use. Space segment of GPS system composed of 21 satellites, evenly distributed in six orbital planes, ground altitude of 20,000 km, orbital inclination of 55 degrees, flat heart rate of about 0, cycles of about 12 hours, the two satellites to ground-launched bands of the carrier signal, carrier signal frequency was 1575.442 MHz (L1 band) and 1227.6 MHz (L2 band), satellite, high precision atomic clock installed in order to ensure frequency stability, modulation on the carrier has said satellite broadcast position for the distance of the C / A code and P code, and other system information, to worldwide, to provide as many high-precision, all-weather, continuous, real-time three-dimensional measurement speed, three-dimensional positioning and timing. Application of GPS has been very extensive, and more extensive, involving almost all fields of national economy, especially in the consumer market in recent years to the momentum of the development of form, as represented by a GPS satellite navigation applications, as he can easily provide position, velocity and time information, it will soon become a modern information society, an important source of information has become the information age, one of the country's infrastructure, because of his powerful, easy to use, the price is right, it can be very good with other systems to form a large number of new applications, new products, rapid access to our daily work, study, living and entertainment. The design of the micro-controller to send the information to the GPS module to process real-time through the LCD display Beijing standard time, and latitude and longitude and other information, the present study, the overall design of the system were analyzed, and the composition of the various functional modules and their related hardware and software for detailed description
Keywords: Ethernet；configuration；monitoring
目录
摘要
Abstract
第1章 前 言 1
1.1 GPS系统的构成 10
1.2 GPS系统基本定位原理 10
1.3 GPS-OEM通信协议 12
第2章 系统总方案设计 14
2.1 GPS-OEM接收板 14
2.2 LCD液晶显示器 15
2.3 MCU的选择 14
第3章 系统硬件的设计 17
3.1电源电路的设计 18
3.2 单片机电路系统 18
3.3 GPS接收电路与接口 19
3.4 LCD液晶显示器接口设计 23
第4章 软件设计 25
4.1 软件设计思路 25
4.2 程序流程图 25
4.3 模块软件设计 26
第5章 软件的测试及仿真调试 30
5.1 软件调试 30
5.2 仿真测试过程 30
第6章 结束语 58
参考文献
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