NGN－3G核心部件SGSN的代码实现，适合初学者学习，有详细的说明

通过枚举方式自动连接电脑串口，解析gps nema0183协议数据包，显示出当前的经纬度，海拔和时间

非常全的GPS（全球定位系统）的Matlab源代码。-Very wide of the GPS (Global Positioning System) of the Matlab source code.

这个是程序用到的四颗可见星的所用的所有信息。其中给出7个可见星的信息，选则其中最好的四颗。请把信息内容复制到.txt中。-This is the program used four visible stars all of the information used. Which are given seven visible stars of information, the election is the best of four. Please copy the information content. Txt in.

基于自主开发的A/D芯片的芯片初始化程序，vc编写，希望对大家有帮助-based on the self-development of the A/D chip chip initialization procedures, vc prepared, and I hope to be helpful

利用gps计算太阳日出日落时间，测试过很准确-suncalc

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.

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-gps satellite position calculation, coordinate system conversion, function is powerful and suitable for use by project team members

Lessons Learnt in Assisted GPS

用matlab编辑的关于超宽带通信的BPSK调制的误码率分析,系统仿真时加入高斯白噪声,仿真结果给出了时域和频域图-BER analysis of the ultra wide bank BPSK communication channel with AWGN, time and spectrum figures are given in the end.

使用GSM传递卫星定位信息的源代码,适用于C51系列单片机.-The use of GSM transmit satellite positioning information source code, applies to C51 MCU.