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...

The idea behind differential GPS is to remove as much errors as possible from the range measurements by establishing these errors at a reference site. In its most simple setup, a GPS receiver is located at a well surveyed position and its (pseudo) range measurements are compared with the actual calculated range from this receiver to the SV s. The differences between measured ranges and calculated ranges at the reference receiver are applied as corrections to the ranges measured by other receiver(s) close by.

实现网络GPS定位车辆的位置-Let you kown how to get your position in gps network

美国天宝公司TGO软件的GPS网平差程序的核心源代码,GPS软件开发必备-Trimbles TGO software for GPS network adjustment program source code, GPS software development, an essential

飞控  GPS  无人机飞控 ，陀螺仪平衡，GPS 自动巡航，完整的飞控算法。

这是GPS接收机仿真的程序， GPS数据由给定文件来模拟，对于GPS爱好者很实用。-This is the GPS receiver simulation procedures, GPS data given by the paper to simulate, for GPS enthusiasts practical.

在测绘领域根据需要需要进行多种坐标系之间转换，常用的坐标系包括BJ54，西安80，WGS84.CGCS2000，七参数转换，本程序实现了北京54到当地坐标系，西安80到当地坐标系，以及当地坐标系到北京54与西安80之间的相互转换等

使用C#语言编写的对流层延迟误差计算，采用的模型为SAAS模型，内置GMT计算地面点天顶方面水汽、温度等信息，可视化界面，便于操作。

fm调制和解调，matlab语言实现，可以改变fs，fc，ft-fm modulation and demodulation, matlab language, can change the fs, fc, ft

0183协议的解析程序的源代码,可以用在定位,导航,监控等方面-0183 agreement analytic program"s source code can be used in positioning, navigation, surveillance etc.