GPRS部分源代码，一部分常用AT命令的代码实现，比如，打电话，发短信等...

该程序主要描述的是在进行GPS数据处理过程中有关GPS坐标及高程的中误差计算，能够根据已有数据快速计算X，Y，h的中误差，方便快捷。

解析GPS 串口的NMEA报文的类。有GGA,GSA,GSV,RMC,RMB等报文的解析-GPS NMEA CLASS

利用GPS作为时钟源实现精确计时，方便实用，定时精度达到300ns以内。 -The use of GPS as a clock source to achieve accurate timing, convenient and practical, timing accuracy of less than 300ns.

AT-command modem SIM508Z (en)_SIM508_ATC_V1.01

GPS M-89模块DATASHEET 串口连接原理图-GPS M-89 modules to connect serial schematic DATASHEET

GPS开发经典工具，很有参考价值，你可以用它在PC平台接收数据包，这样就可以研究包结构知识-GPS development of classical tools, a good reference, you can use it in the PC platform for receiving data packets, so packets can study the structure of knowledge

一个自行设计的GPS的出租车使用的程序源代码。-the GPS programme source code used by taxies

上一个的继续,连续有九个压缩文件,大家可以打开解压后自己慢慢享用,这个都是本人调试通过了的,希望共同进步!-A continuation of a row has nine compressed file, everyone can open their own after extracting slowly to enjoy, this is my debug adopted, and I hope common progress!

资源描述包含不能下到的这三个文件

目前GPS（全球定位系统）定位应用市场日趋成熟，正在进入应用的高速发展时期。本文以一款EverMore公司的GM-X205GPS接受模块为例，介绍了其数据格式，以及应用PIC16F874单片机RS232串口进行数据接收的程序-current GPS (Global Positioning System) location-based applications market becomes more mature, Applications are entering a period of rapid development. A EverMore paper to the GM-X205GPS accept modules for example, introduced a data format, and the application of PIC16F874 RS232 serial port for data receiving program