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。
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
答谢辞