gps 卫星位置的计算 坐标系转换 功能很强大，适合工程人员使用...

对C/A码的相关在频域中的matlab实现仿真，大家交流啊，-Of C/A code correlation in the frequency domain realize matlab simulation, the exchange of everyone ah,

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

北京市矢量地图

一个GPS监控系统中，实现对电子地图加密的示例。解决了GPS系统中对电子地图的安全保密-A GPS monitoring system, the realization of electronic map encrypted examples. Solved the GPS system on the electronic map of the security and confidentiality

根据GPS卫星的广播星历，计算卫星的位置，也可以进行GPS卫星位置的预报

GPS时间转换程序，采用C#Windows编写，有良好的界面布局，输入年月日可以准确地转换成GPS周、周内日以及年积日，对从事GPS研发人员很有帮助。

灵图软件GPS导航软件. 下载后能用的请返馈信息-Lingtu software GPS navigation software. Download can be fed back to the requested information

这个程序是用来构造的分形树的。其中的参数可以自由甚至。-This procedure is used to construct the fractal tree. The parameters can even free.

GPS测试及接收通信程序-Communication code for GPS testing and receiving

MO中利用图片生成点符号专题　 deskfee 发表于 2005-3-15 14:34:24 用truetype字体可以比较方便的实现点符号，但用图片可以实现更加漂亮的点符号（如果你认为你做的图标足够漂亮的话，^_^），只是实现起来麻烦一点。 文件是txt,下载完后请先更改-MO use photographs to generate symbols deskfee topic published in 2005-3-15 14:34:24 truetype fonts can be used to facilitate the realization of more symbolic point, but pictures can be used to achieve a more beautiful symbol of the point (if you think you have done enough beautiful icon, ^ _ ^), but is only one point up trouble. Txt file is downloaded after the change of post