GPS模拟器工具

利用C#编写的GPS伪距单点定位程序，可以根据星历数据和观测数据批量计算接收机坐标，内附测试数据和结果。

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

手机上通过蓝牙串口协议读取GPS接收仪的GPS数据。-Mobile phone via Bluetooth serial port GPS receiver to read the agreement of the GPS data.

GPS receive program,use AT89c51,displayed by 1602lcd.

Faster GPS signal tracking using XOR method

一个适合制作GPS定位系统的显示程序，里面有完整的程序注释，可供参考-A GPS positioning system for the production of the display program, there are complete notes of the proceedings is available for reference

GBT_18314-2001全球定位系统(GPS)规范  GBT_18314-2001 global positioning system (GPS) specification

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

将互相关GPS接收机的C1-P2间DCB进行改正-GPS receivers will be inter-related C1-P2 of the corrected inter-DCB