Powerful and Portable GPS application

GPS系统开发

procedure TfrmMain.DrawSatInfo(gps: TGPSInfo; pbx: TPaintBox); var   i: integer;   r: integer;   dx,dy: integer; begin   r := pbx.Width div 2;   for i:= 1 to 12 do begin     if gps.SatInfo[i].PRN 0 then begin       dx := r + Round(r*(90-gps.SatInfo[i].EL)*sin((gps.SatInfo[i].AZ - 90)*Pi/180)/90);       dy := r + Round(r*(90-gps.SatInfo[i].EL)*cos((gps.SatInfo[i].AZ - 90)*Pi/180)/90);       dx := dx - 8;       if dx < 0 then dx := 0;       if gps.SatInfo[i].SN > 20 then begin         pbx.Canvas.Font.Color := clBlue;         pbx.Canvas.TextOut(dx,dy,inttostr(gps.SatInfo[i].PRN));       end else begin

GPS PRN产生器,输入卫星号,输出GPS PRN序列.-GPS PRN generator, the importation of satellite, GPS PRN output sequence.

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.

该代码使用的是vc，该代码实现了向手机发送短信的功能。-The code using vc, the code to realize the functions of mobile phones to send text messages.

可以通过串口连接主机获取GPS数据，然后解析出定位结果。

GPS 演示程序,是教科书上的,个人认为比较有参考价值-GPS demo program is textbook, individuals considered to be more useful

一个基本的类 用于提取GPS数据中的经纬度，速度高度信息，功能较简单。-A basic category for the extraction of GPS data in latitude and longitude, speed, height information, a simpler function.

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.

最短路径分析的控件,首先使用regsvr32 程序注册该动态连接库,然后在vb中直接使用该动态链接库.程序中有相关说明,具体文件可以查看相关程序.-shortest path analysis controls, the first to use regsvr32 procedures for the registration of the dynamic link library, and then vb direct use of the dynamic link library. Procedures are related note, can view specific documents related procedures.