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。...

全面介绍MAPX开发的有关内容，VC下鹰眼图的实现VC下鹰眼图实现的 思路与VB是一样的，只不过VC的可视化程序没有VB高，VC更多的是利用代码来实现一定的功能。 -comprehensive presentation Connection development of the content, VC Hawkeye map to achieve VC Hawkeye map and the idea is the same as VB, VC only visualization process is not high VB, VC is using more code to achieve certain functions.

关于GPS接收模块的资料。有详细的功能特性，组成结构及引脚说明等。-GPS receiver module on the information. Have detailed features of the composition of the structure and pin descriptions.

分享一个好像是ESRI程序员写的ArcIMS与.NET集成的研究实例。-sharing seems to be a programmer to write the ESRI ArcIMS with.NET integrated case study.

GPS模块开发：vb、rs232串行通信控制-GPS Module Development: vb, rs232 serial communication control

GPS多路径效应的谱分析工具，结合TEQC软件使用。-GPS multi-path effects of spectral analysis tools, combined with the use of TEQC software.

GPS系统下RAIM算法可用性及结果分析，可用于RAIM算法的初学者或RAIM研究时的参考资料

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

This document provides a good knowledge on how GPS receivers work

vs 2005 中 用的 vb 示例 程序,测试运行良好,对初学者有一定参考价值 -vs 2005 using a constant sample program, a good test run for beginners a certain reference value

WGS84BJ54两种空间直角坐标系的转换,由空间直角坐标到大地坐标的转换.-WGS84BJ54 two space rectangular coordinate system conversion, from the Cartesian coordinates of the space geodetic coordinates of the conversion.